Carver HR 742 Owners Manual
User Manual:
Open the PDF directly: View PDF 
.
Page Count: 37
| Download | |
| Open PDF In Browser | View PDF |
HR-732
& HR-742
SonicHolognaphf
Receivens
withACCDFMTuningSection
/I\ m
/
/ ,l \
/l\
RrsKoF ELEcrRrc
sHocK /
| \
t \ " ' - . - r i o r i o i o i ' E n " - - ':l \
The lightningflash with arrowheadsymbol
withinan equilateraltriangleis intendedto alert
the user to the oresenceof uninsulated
"dangerousvoltage"withinthe product's
enclosure,that may be of sufficientmagnitude
to constitutea risk of electricshockto oersons.
CAUTION:TO REDUCETHE RISK OF ELECTRICSHOCK
DO NOT REMOVECOVER(OR BACK)
NO USER.SERVICEABLE
PARTSINSIDE
REFERSERVICINGTO OUALIFIEDPERSONNEL
Safety Instructions
1. Readlnstructions - All the safetyand operation
instructions should be read before the Carver
Component is operated.
2. Retain Instructions - The safetyand operating
instructions should be kept for future reference.
3. Heed Wamings - All wamings on the Component and in theseoperating instructions should be
followed.
4. Follow Instructions - All operating and other
instructions should be followed.
5. Water and Moisture - The Component should
not be usednear water - for example, near a bathtub, washbowl, kitchen sink, laundrytub, in awet
basement,or near a swimming pool, etc.
6. Ventilation - The Component should be
situated so that its location or position doesnot
interfere with its proper ventilation. For example,
the Component should not be situated on a bed,
sofa,rug or similar surfacethat may block any
ventilation openings; or placed in a built-in installation such asa bookcaseor cabinet that may impede
the flow of air through ventilation openings.
7. Heat-The Component shouldbe situatedaway
from heat sourcessuch asradiators,or other devices
which produce heat.
B. PowerSources- The Component should be
connected to a power supply only of the type
describedin theseoperation instructions or as
marked on the Component.
9. Power Cord I'rotection - Power-supplycords
should be routed so that they are not likely to be
walked upon or pinched by items placedupon or
againstthem, paying particular attention to cordsat
plugs, conveniencereceptacles,and the point where
they exit the Component.
The exclamationoointwithinan eouilateral
triangleis intendedto alertthe user of the
presenceof importantoperatingand maintenance(servicing)instructionsin the literature
accompanyingthe appliance.
10. Cleaning - The Component should be cleaned
only asrecommended in this manual.
11.Non-usePeriods-The power cord of the
Component shouldbe unplugged from the ouflet
when unused for a long period of time.
12. Object and Uquid Entry - Careshould be
taken so that objectsdo not fall into and liquids are
not spilled into the inside of the Component.
13. DamageRequiring Service- The Component
should be servicedonlyby qualified servicepersonnelwhen:
A. The power-supply cord or the plW has been
damaged;or
B. Obiectshave fallen, or liquid has spilled into
the Componen! or
C. The Component has been exposedto rain; or
D. The Component doesnot appearto operate
normally or exhibits a marked changein
performance;or
E.The Component has been dropped, or its
cabinet damaged.
PORTABLE
CARTWARNING
Cartsand stands- The
Component shouldbe
used only with a cart or
stand that is recommended by the
manufactirrer. A
Component and
cart combination
should be moved
with care. Quick
stops, excessive
torce, and uneven
sunacesmay cause
the Comoonent and
cart combination to
ovefium.
Can'tWait?
If you're super-impatient (and/or are expert at
stereotheater installation, you can skip aheadto
the "nitty gritty" information which is marked
with tabs on the upper right hand corner of
manual pages.
Otherwise, we suggestyou read the entire
manual carefullybefore proceeding. The HR-732
andHR-742 offer a wide variety of connection
options which you should consider in advance.
14.SeMcing-The usershould not attempt to
servicethe Componentbeyond those means
describedin this operating manual. All other
servicing should be referredto qualified service
penonnel.
18. Attachment Plugsfor Altemate Line Voltage
(Dual voltage models ody)- Seeyour Authorized
Carver Dealerfor information on the attachment
plug for altemate voltage use. This pertains to dualvoltage units only.
15. To prevent elecLricshock, do not usethis
polarLed plugwith an extension cord, receptacleor
other ouflet unlessthe bladescan be ftrlly inserted to
prevent blade exposure.
19. Power Lines - An outdoor antenna should
be located away from power lines.
Pour preevenir les chocs6lectriquesne pasutiliser
cette fiche polarisedav€cun prolongateuq,un prise
de courant ou une autre sortie de courant, saufsi les
lamespeuvent €tre ins6r6esi fond sanslaisser
aucune pariie d d6couvert.
WARNING - To reducethe risk of fire or electric
shoc( do not exposethis appliance to rain or
moisture.
1"6.Grounding or Polarization - Precautionsshould
be taken so that the grounding or polarization
meansof the Component is not defeated.
17. Intemal/Extemal Voltage Selectors- Intemal or
extemal line voltage selectorswitches,if any, should
onlybe resetand re-equippedwith a proper plug for
altemate voltage by a qualified servicetechnician.
Seean Authorized Carver Dealerfor more
information.
EXAMPLEOF ANTENNAGROUNDINGACCORDINGTO NATIONAL
ELECTRICALCODE INSTRUCTIONSCONTAINEDIN ARTICLE
810 - ''RADIO AND TELEVISIONEQUIPMENT''
GROUND CLAMP
ANTENNA
LEADIN WIRE
DISCHABGEUNIT,
roN 810-20)
GROUNDING
CONDUCTORS
(NECSECTTON
810-21)
POWERSERVICEGROUNDING
ELECTRODESYSTEM
(NEC ART 250. PART H)
NEC - NATIONAL ELECTRICAL CODE.
NOTETO CATV INSTALLER
This reminderis to call the CATV systeminstaller'sattentionto Articleg2O-40
of the.NEC that providesguidelinesfor propergroundingand inparticular,
specrtres
that the cabtegroundshall be connectedto the groundingsystem
of the buildingas closetb the pointof cableentryas praciical.
IMPORTANT"FASTTRACK'
INFORMI\TIONFORTHE
IMPATIENTUSER
WhiletheHR-732andHR-742ore
prettyintuitivein theirconnection
ond
operotion,thereARE
importantWints
whichmoynot beapparent,uen to on
expeienced
audiophile.Thesepoints
(includingdifferences
betweenthetwo
receiver
models)orenotedin boxeslike
thisone. Soevenif you justskimthe
monuol,makesureto reodeochbox,
A message
from
BobCaruer
Congratulations on purchasing a truly top
quality stereoreceiver;a design that combines
overall sonic excellence,useful featuresand
exclusiveCarvertechnology.
The basics
At the heart of the HR-732/HR-742isa superb
audio/video switcher/preamplifier with moving
magnet phono stageand inputs for three audioonly sources
plus three
audio/video
sources(picture
and sound).
Distortion and
noise are exceptionally low.
Dynarnic headroom is high
enough to handle the most aggressively
recorded
CD or LaserDisc.Moreover,we think that vou'll
be impressedwith the HR-732/HR-742'soverall
musicality,a subjectivequality that defiesquantification. Partof this derivesfrom overalldesign.
Partis attention to detail. For example,by
motorizing what is essentiallya standard,lowdistortion volume control potentiometersuchas
is used in our ReferencePreamplifiers,we can
eliminate potential overloadproblemsand simultaneouslysimplify the circuitry.
Sonic Holographf
Included in the HR-732lHR-742's
preamplifier
sectionis a SonicHologram Generator.Sonic
Holograph/o is an exclusiveCarver invention
that helps restorethe true spacialcharacteristics
of recordings.It can bring you a more realistic
listening experiencethrough pyschoacousticprocessingof the stereosignals.Insteadof the flat,
between-the-loudspeaker
imaging associated
with conventional stereo,Sonic Holographf
generatesa sonic image- a sound stage- that's
remarkablybelievableand convincing. You'll
experiencea noticeableincreasein sound stage
depth aswell aswidth. Furthermore, it works
with any stereoinput including CD's,tapes,
records,FM broadcastsand VHS Hi-Fi video
soundtracks,and doesnot requireadditional
speakers.It DOES,however, require careful setup
and speakerplacement. In other words,to get
the full effect,vou'll have to take sometime and
read the instructions carefully to fine tune Sonic
Holographf to your room and speakers.. . but
the resultscan be absolutelyastonishing. We get
many letters from Carver owners who simply
cannot live without the improvements Sonic
HolographyPmakeson their favorite music.
becausewe have chosen the most effective production sourcefor theseparticular models.
Seriouspower amplifier sections
The HR-732provides 60 watts per channel
while the HR-742'srated output is 80 watts per
channel. Both power amplifier sectionsuse large
power supplieswhich give your speakersthe
"muscle" to fully realizedynamic musical peaks.
Even at moderate listening levels,basswill be
tighter and more authoritative thanks to the high
current/high voltage output of the power amp
section. Both receiverscan also handle low impedancedips aslow astwo ohms which can
occur with many popular speakers(seepage 15
and 18 for more complete explanations of
speakerimpedances).
Aboutthis manual
In responseto Carver customer suggestions,
we're trying a new style of manual that's designed to cover more possiblehook-ups and
better explain the operation of the HR-732/HR742. As a result, this manual may seemmuch
more complicated than those which come with
some receivers. If you're new to hooking up stereo equipment, we think that you will appreciate
our detailed approach. However, we've also provided a meansbywhich the advanceduser can
quickly graspthe key points and differencesof
the HR-732 IHR-742. Important information is
enclosedin boxes like the one on the previous
page. Even if you don't read any other part of the
manual, pleasecheck out each of theseboxesbefore proceeding.
Asymmetrical Charge-Coupled FM Detection
This circuitry (ACCD for short) can improve
FM reception on stations which are plagued with
multipath distortion and noise . It works by
dynamically evaluating three aspectsof the incoming FM signal: signal strength, modulation
level and multipath content. Basedon the quality of the signal, ACCD usesasmuch of the
undistorted L/R component (stereo)component
aspossibleto regenerateaccuratestereo sound.
ACCD can't work miracles on really terrible reception, but it can make a significant difference
on many stations.
Simplicity as a design goal
Frankly, there are 60 and BO-wattreceiverson
the market with more flashing lights, buttons
and bellsand whistles. Someof them areso complicated that they seemto take a degreein
computer programming to operate. When designing the HR-732 andHR-742, we included
only those featureswhich we knew to be truly
useful and that would not degradethe overall
sound of the receiver. Our design goals are
reflectedperfectly in the elegant appearanceand
sonic excellenceof thesereceivers.
Madewhere?
Carver is American-owned and basedin
Lymnwood, Washington. Of the almost 250
people who work here, most are engagedin
building Carver home, mobile and professional
audio products. Carver'sgoal is and alwayswill
be to provide audiophile-quality products at
affordable prices. Thus, we strive to take advantageof manufacturing economiesand methods
wherever it is possiblewithout lowering product
quality. As a result, we use outside and overseas
production facilities for some products and indicatedthis clearly on the packing box. Sufficeit to
saythat the HR-732 andHR-742 are greatvalues
Onceagain, thankyou!
There are a mind-boggling number of receiver
brands and models on the market today. We appreciateyour choice of the Carver HR-732or
HR-742. Their clean appearancebeliesthe wealth
of featuresand great sound that each is capable
of. I hope that you will have many yearsof listening enjoyment.
Sincerely,
W- G"*^
Bob Carver
Hook-Up
Savethe packing box and
your salesinvoice!
lp p1i; yegesnVforrepockingyour
HR-732/HR-742
ffit everneedsie:ice
(orif youmove).
Keepthe soles
receiptfromthe store
whereyouboughtyourHR-732/
HR-742.. . |) to establishthedurotion
of yourWanonty;2) forpenonol
nsuroncepurposes.
the box, pleasecheck for any
..,"Y1:l_9_p:li3g
vlslDte
srg-not damagethat did not appearon the
ourslcleot the box. If you DO encouhterwhat
appearsto be concealeddamage,pleaseconsult
your Carver Dealer before furt[erinpacking
or
installing the unit.
Alongwith the stepsnoted above,take a mo_
ment and fill in the following information for
convenient reference:
Model: tl HR-732 aHR-742
Sonic Holographf Receiver
Serialnumber
Purchasedat
Date of purchase
. Fln_ally,take a moment to fill out and return
the Warranty Card that came with yo"i-i*".
receiver.
Placement
The real no-no,sarelistedon the first pageof
thjs manual. They,re basically Iegall ;o'rded
f
warnings about common sensesIuffiike,,don,t
usgtheHR-732/HR-742in your swimminNpiol,,
and
" don't
takethis receiverintimally withtouii ioctots
presciption" etc.
Assumingyour overalllocation is okay, the
HR-732lHRll+2 canU" porttio""J ,,
ouit'of u
"stack".of
com-ponents.However,Uaiura "ot to
DrocKalr flow trom the receiver,stop panel venti_
lation-areas.If you setanother .o-'p5"L"i
""
ot the HR-732orHR-742,makeiure that its
l9p
"feet" provide
at leasta l/4-inch gup U"t*""" tfr"
component and the HR_732|HR_742.
Connectiontips
We're about to launch into the actual nitty
gltg -._." I "cti ng-cablefr enzyth at,sneiessary
wnen you install a-newcomponent. First,
though, considerthe following tipsI
Make sureall components are OFF
before making any connections.
I
Make surethat ,,left is hooked to left
and right is hooked to right,, at eactr
connection. The obvioui way to assure
is.tqa;lignone hook_upcorOpiug
!!is
color
to left and the other to rieht.'
_GenerallyREDis used to signi# RIGHT.
White, grey or black then ripresents
left.
I
Whenever possible,keep power cords
away from signalcablesiiirputsfrom
CD player,tape deck,etc.)to prevent
hum. This is especially
impoitant for
phono cableswhich cirry verv weak
signals.While hum is lejs of i problem
today than it wasin the past,nbisecan
still find its way into your systemif a
component,s power cord becomestoo
intimately involved with a hook up
cable.
Carver components, power'cords
.'
and convenience outlets ardail "; ih;
right side of the chassis(when viewed
from the-back). This allows you to
bundle all the component power cords
and keep them separatefrorn signal
connections.
t
Typeofhookupcables.Alsocalledinter_
connects,patch cords or RCAcables.
There are lots of different gradesof
you can piy asmuch
hookup
as
-cables.
$30 per foot for someof them! Whether
or not you hear an improvement in
sound quality with ,,audiophile,,inter_
connectsis up to your own ears.
l-towever,really CHEApor old connec_
tion cablescan sometimesDlS_connect
themselvesinside,causinghum or aloss
of sound in one or both cfiannels. ne_
fore you send a component in for
s-eM9e,swaphook_upcablesto seeif
they're the culprit. The other areaof
concern are video signals. Theseare far
higher in frequencythan audio anOcin
otten benefitfrom a higher quality in_
terconnect. Severalcompaniesmike
sp.cialized audio/video cableswith two
audio and one video conductor. Check
'em
out.
I
DON'T PANIC. While there aremore
than thirty possibleconnectionson the
back.of the HR-732lHR_742, matchinx
lhgm u.pwith your existingequtpmerit
is simple^.
you probablywon,t
_Besides,
use all of them anywav.
Hook-up...anoveruiew
There are basically three kinds of connections
on the HR-732/HR-742(or any other A/V receiver
for that matter): one-way incoming, one-way
out-going and two-way.
One-way connections simply route the signal
from a sound or video sourceto the corresponding input on the back of theHR-732lHR-742.
The HR-732IHR-742 has one-way incoming
connectionsfor:
I
CD Player
I Turntable
I TV (sound and picture)
I
CDV (LaserDiscor combi player such as
our.MD/V-S00)
I
AM & FM Antennas
I
Cable FM input
I Main In (HR-742only. Rarelyused,see
page14)
One-way OUTgoing connections are:
I
Video Monitor
I
Loudspeakers
I
PreOut (HR-742only. Rarelyused,see
page14)
Theseare easyconnections. We discusseach
in detail below. Just make surethat "lefts go to
lefts and rights go to rights."
Two-way connections can get c6nsiderably
more complicated.Theycenter around the
HR-732lHR-742'saudio and video tape functions
and are referredto astape monitor loops.
"Loops" becausea signal from
the HR-7321
HR-742goesout to another component and then
backto the receiver.
Two-way connections are asfollows:
I Tape (lN & OUT)
I VCR (lN and OUT)
The audio tape loop is where you would connect a cassettedeck, an equalizeror other signal
processorsuch asour DPL-33Dolby Surround
Processor.
If you're connecting any sort of
externalprocessorto your HR-732/HR-742,take
specialcareto follow our instructions, illustrations and generalunsolicited advice in the
sectionsthat follow.
PHONO and CD and AUX: Basic audio
connections
PHONO. This phono circuit is designedfor moving magnet cartridges(Gain: 35 dB; impedance:
47K ohms resistancein parallelwith 150 pF
capacitance). If you are using a low-output moving coil cartridge,you will need a step-up device
such asthe Carver MCt.
If your turntable has a ground wire, make sure
to secureit to the HR-732IHR-742ground post
just to the left of the PHONO input sockets.
NOTE: Do not plug line level inputs such as
from CD players,tape decks,VCR's,etc. to this
input. Severeoverloading and distortion result.
Make sureto connectturntableoround wire
Receiver
CD PLAYER.Just grab a hook up cable and
connect.
IndMdudConnections
Instead of a really complicated drawing with
all possibleconnections crammed into it, we will
discussand illustrateeachpossiblehook-up individually, since that's how you'll make them: one
at a time. Figures7 and2 on the next pageshow
the rear panels of the HR-732 andHR-742. Figure
3 is a generaloverview of what can be connected
to either receiver.
Receiver
What if you have two CD players? Or three
CD playersand an electric glockenspeilyou want
to hook up? The HR-732 and.HR-742really have
four interchangable line level audio inputs not
Hook-Up
Savethe packing box and
your salesinvoke!
Theboxisnecessary
forrepockingyour
HR-732/HR-742
ff it everneedsservice
(orif youmove).
Keepthe solesreceiptfromthestore
whereyouboughtyour HR-732/
HR-742.. . I) to estoblishthedurotbn
ofyourWananty;2) forpersonal
tnsuronce
putwses.
Ugon opening the box, pleasecheck for any
visible sign of damagethat did not appearon the
outside of the box. If you DO encouhler what
appearsto be concealeddamage,pleaseconsult
your Carver Dealerbefore further unpacking or
installing the unit.
Along with the stepsnoted above,take a moment and fill in the following information for
convenient reference:
Model:I HR-732 aHR-742
Sonic Holographf Receiver
Serialnumber
Purchasedat
Date of purchase
Finally, take a moment to fill out and return
the Warranty Card th'at camewith your Carver
receiver.
Placement
The real no-no's arelisted on the first pageof
this manual. They'rebasicallylegallyworded
warnings about common sensestuff like,,don,t
usetheHR-732/HR-742in your swimmingpool,, and
" don't take
this receiverintemallywithou{ a doctor,s
prescription"etc.
Assuming your overall location is okay, the
HR-732/HR-742canbepositionedaspait of a
"stack" of components.
However,be surenot to
block air flow from the receiver'stop panel ventilation areas.If you setanother component on
top of the HR-732or HR-742,make surethat its
"feet" provide
at leasta 1/4-inch gap betweenthe
component and the HR-7321HR-742.
Connectiontips
We're about to launch into the actual nitty
gritty connecting-cable frenzy that,s necessary
when you install a new component. First,
though, consider the following tips.
I Make sureall components are OFF
before making any connections.
I Make surethat "left is hooked to left
and right is hooked to right,, at each
connection. The obvious way to assure
this is to assignone hook-up cord plug
color to left and the other to right.
Generally REDis usedto signify RIGHT.
White, grey or black then represents
left.
I
Wheneverpossible,keeppower cords
away from signal cables(inputs from
CD player, tape deck, etc.) to prevent
hum. This is especiallyimpoitant for
phono cableswhich carry very weak
signals.While hum is leis of i problem
today than it was in the past, noise can
still find its way into your systemif a
component's power cord becomestoo
intimately involved with a hook up
cable. Carver components' power cords
and convenience outlets are all on the
right side of the chassis(when viewed
from the back). This allows you to
bundle all the component power cords
and keep them separatefrom signal
connections.
T Typeofhookupcables.Also called interconnects,patch cordsor RCAcables.
There are lots of different gradesof
hookup cables. You can pay asmuch as
$30 per foot for someof them! Whether
or not you hear an improvement in
sound quality with "audiophile" interconnectsis up to your own ears.
However, really CHEAPor old connection cablescan sometimesDlS-connect
themselvesinside,causinghum or a loss
of sound in one or both channels. Before you send a component in for
service,swap hook-up cablesto seeif
they're the culprit. The other areaof
concern are video signals. Theseare far
higher in frequency than audio and can
often benefit from a higher quality interconnect. Severalcompanies make
specializedaudio/video cableswith two
audio and one video conductor. Check
'em out.
t DON'T PANIC. While there aremore
than thirty possibleconnectionson the
back of the HR-732/HR-742, matching
them up with your existingequipment
is simple. Besides,you probablywon,t
useall of them anyway.
m
I
including the audio tape loop (By line level we
meanany signalinput that,sNOT from a micro_
pnoneor a turntable).
The other line level audio inputs arelabeled
TV, VCR and CDV. If you only have one video
sound input, the other two can be used for other
audio components.
^_Naturally,it's most convenient to plug your
CD play_er
into the CD input; still if ybu iTV CDV VCR ruNERAUrosrEREo @
VTSUAL
@ @ @
so
uN
D>f_ryt3t;?t$
f3fulf$l#*'-,
INPUTSELECTOR
TVA/ID1 CDVAr'ID
2 VCR/VID3
o o o
CD TAPE MONITOR
o o o
t
o o o o o
AM
MODE
SLEEP
-TUNEBMODEJ
AUDIO/VIDEOJ
o o
ffi
HOLOGRAM
,l
out of the room when you
it back
on). ButwhenWAKEitp i,furn
pi.rr.ilrn"
receiver,,remembers,,
rot'rr.dirrloiilation
when
in here. Headphoneimpedances
of
fr.oma few ohms to several
thousand
ohms can be accomodut"O,
uitt "rgil
output level may vary dependi;;;;l_pedance.
Headphonesshoulctbe unplugged
from
the HR_732/HR_r +zwnen
not beins
used to avoid risk of aamagelt
,i_,'"r?,
",
high volume settmgs.
13. INPUTSELECTORS.These
buttons se_
lect an audio or "io"o ,oui.".
No;'iH,
turned off.
That way, when an external
timer (like
the kindoften usedt. t i" ii"iil,
""
andoff)turnson tneUn_jsi?r'ntz+2,
the receiverwill beseton th-eI;;*"
soun{ source(suchasu eVit"tir""'
preset).
10. VOLUMECONTROL.This
is the
ter volumecontrol fo, you. sysi"*'mas_
' r,
motorizedsothat it actuallyiotui"i f,
when VOLUMEUp o. Do-ilrN"i;p'."rr"o
on the HR-732/HR
_742 remote."6.".,
attemptto manuallyimpedelts
rotation
if someoneetseis,adlust-i'nfih;"r;t#"
by remotecontrol.
11. POWER.Thisis the HR_73
2/HR_742,s
main ON/OFFswitch. It ahd ili".trit
"
SWITCHEDconvenienc";;";;;;1"
"'
the backof the unit. TheHti_%;)" ;"
employsan electroniii"'iuuto
!\1a] the
mure
mainsoeaker
andheadpfione
gllip".T duringtLrn_onandturn_off.
I nlsetrmrnates
Ioudtransients
which
co_uld
damagea speakeruy;-il.'i;;'
receiver,s
mutingsystem*itt turr,oif
the signalt_oyoui qpeakers
. . . ilf;;"
about3 to 5 secondls
afterinitijplwer_
on, whetherby the front panel
p6*"i'
-1 ,-v
vrL'
theyareall,,external"
ril;;
you must hook a component iilil;
to the cor_
respondingrearinputi beforeyou;is'"
ggj-ngto hearor seeanythi"gf ,"r..rt
pressing
ruNiii;;j:G,;I'
ryry$
HR_742Ys
232lHR
i"t.."ur piurTerui"
tuning section.
Input sourcenames are also
shown in
th,eH R-732l HR_742, sdi;pt;y
;;;;i :
all exceptTUNER,which'OiJpiavi
the
"''
of thestation.rri!"tiv
I:gy.l.y
selected.
14. A-B SPEAKER
selectors.Selects
the
pairof speakers
you intendto iiit"n to.
If you haveconnectedt*o pii,
LiS_'"
ohm speakers,
you canplayeitnlilr
both ar the sametime. if o;e oirnJi.
or
the speaker.systems
rru,i io*#,^r_,#]sl'
(seepage15),you
:nm.qnpe_dance
should
only selectA or B",Uufi,irifotr,
at the sametime.
lyit_ch or from the HR_73i/-'
HI-7!Z remote;Z; immeJiately
at turn_
o-ff,^whether
by the powerswitifr oiUy'
externalswitches.
12.HEADPIION!
iack. AIt conventionat
oynamicheadphones
maybeplrgg;;
CAR\trR.J","
H o l o g r a p h yA / V R e c e i v
er HR_742
.to*ou"r."r'uro
"o",ro,
@.o".
@
.ffifi{il
SENSOR
r
;
4
VISUAL>TV CDV VCR TU
##-ffi
5
"-. ff
souND
>#####
#fd#l#* #
I_AUDIO/VIDEOJ
I-TUNER
o o o o
A
g
SPEAKERS
IAEED
HoLoGRAM
MODE-
ker mftchin g a t
high levels
AvoidusingtheHR-732/HR-742's
A-B
speokerselectorwhen
ployingthe
receiver
at high volumes.
15. FM A.C.C.D.The CarverAsymmetrical
Charge-CoupledFM Detectoris a patented circuit incorporated into the
HR-732/HR-742.BecauseFM stereo
transmission is inherently prone to
multipath interference, even the most
"advanced"
conventional tuner circuitry is forced to deal with a potentially
flawed signal. Carver ACCD Tuner Circuitry is capabletransforming a
multipath-ridden FM stationlnto a
clean, clear signal with accuratefrequency response,wide dynamics and
ambient stereoinformation.. .even
when a high portion of the t-R (stereo)
FM signalis being ravagedby
multipath.
16. SONIC HOLOGRAM activatesthe
HR-732lHR-742's SonicHologram
Generator. Sonic Holographltr can
restorethe 3-dimensionalityof a live
performanceth rough psychoacoustic
signal cancellation and time delay circuitry. lt works with any stereosource
including CDs, records,tapes,stereo
videotapesand laserdiscs.-
Speakerplacement for
SonicHolographry is
critkal
Formoximumeffect,theHR-732/
HR-742'sSonicHologrophrfsannd
prxessingsystemrequirescoreful
plocementof yourspeakers.please
consult theso NIc Ho LoGRAPHyc.
sectionbeginningonpge 29 of this
monuolbeforeexperimenting
with the
HOLOGMMbutton.
17. TTINERMODE. Theseselectbetween
cableTV-derived FM, FM from an external antenna,or AM.
18. MODE. This button works when FM
has been selected.When AUTO is on in
the display, stations which broadcastin
stereowill be receivedin stereoexcept
when their signal is extremely weakbr
grrbled. Then the tuner automatically
"forces"
the station into mono. Wheri
AUTO is off, all FM stations will be received in mono regardlessof whether
they're really stereo. This is handly for
stationswith more interferencethan
even Carver ACCD circuitry can handle.
TUNING/SCAN
3 0 0 o
r U N E RM O D E
30-PresetAsymmetricalCharge-Coupled
DetectorTuner
19. SLEEP(HP.-742ONty). This button
programs the receiverto shut off at a
later time. Eachtime the button is
pressed,the amout of time beforethe re_
ceiver automatically turns itself off is
increasedby 10 minutes up to 50 min_
utes and then by 3O-minu[eincrements
trom 60 to l2O minutes. This sounds
complicated,but we explain its function
more extensivelyin the next section.
20. TTINING/SCAN (Up/DOwN). These
two buttons "behave"differentlv, de_
pendingon whetheryou I ) iusitao
them,2)hold them dbwn momeniarilv
and then let go or 3) hold them down
continuously. When the FREeUENCy/
PRESET
button is in pRESET
position,
here'show TUNING/SCANbehaves:'
A. MANUAL TTINING . Tap and imme_
diately releaseeither Up or DOhfN
(TUNING/SCAN)and they work just
like a good ole tuning knob. The'tuner
simply stepsup (or down) the FM band
in 0.1 Mhz increments. If there is no
station at, say,88.7,you will hear only
inter-stationhiss (which is a greattesf
slgnal sourcefor calibrating cassette
deckswifh variablebiascoitrols).
B. AUTOMATIC SCAN. presseither Up
or DO\tVN a little longer (about 2 sec_
onds) and then releaseto invoke AUTO
SCAN. The tuner searchesup or down
the FM band and then stopsat the first
"strong"
station it encouniers(,,strong,,
is a relativeterm, dependingon what
kind of receptionyou get iriyour area
and what type of antenna ydu have).
Pushing UP or DO\AIN for at least2 iec_
onds again takesyou to the next strong
station. If, while in AUTO mode, vou
tune above 108.0,auto-scanningcon_
tinues at the ,,bottom,,of the diil (97.5)
and proceedsback up. Conversely,if
you turn "down,, below g7.5,scanning
continuesdown from 109.0.
C. EXPRESSMODE. If you reallvwant
to speedup or down thedial, leaveei_
ther UP or DO\zVNheld down. After a
few seconds,the tuner goesinto suDer_
mondo fastmode, whiizing,throudh
the AM or FM band at warp speedintil
you releasepressureon the button.
Then the tuner goesbackinto AUTO_
MATIC SCANmode, stoppingat the
first strongstation.
D. ANOTHER USE. When the FRE_
QUENCY/PRESETbutton
is in pRESET
mode, you can selecta presetby press_
ingtheuPor DO\ArN(Tuxtxc/scaNi
buttons. Pressonce to advanceone pre_
set;hold it down to zip quickly through
them.
21. BASS& TREBLEtone controls. At
their centerdetent position, there is no
ffi
c o o
tvlODE
IDE
TUNING/SCAN
SLEEP
'
30-PresetAsymmetricalCharge-CoupledDetector Tuner
.@
BALANCE
i*,#f
boost or cut. Maximum rotation in either direction produces10 dB ofboost
or cut. The basstone control operates
from 1 kHz down, the treble from 1 kHz
on up.
22. BALANCE CONTROL. Adiuststhe left/
right distribution of sound to your
speakers.It is usefulwhen one speaker
is closerto your listening position than
the other, or with somepoorly centered
recordedmaterial. The sweepof the
HR-732/HR-7
42's BALANCEcontrol is
intentionally not linear. That is, small
movementsoff centerproducesmaller
shiftsin the stereoimage per degreeof
rotation than near the extreme left and
right positions. This makessmall
correctionsmore convenient.
If patiencehas prevailedand you have read
this whole sectionBEFOREplaying with your
HR-732/HR-742,wecongratulateyou. Now for
the fun part!
Enjoyngyour HR-732/
HR-742
If you have experiencewith seriousstereo
components,you probablywon't need to read
this section- assuming,of course,that you've
-742 Funcreadthe previoussection(HR-732/HR
tions and Features).But for thosewho only
change stereosystemsevery decadeor so, we've
included step-by-stepinstructions for frequentlyusedfunctions. Don't be embarrassed
to read
through them.
Ashorttestdrive
BecausetheHR-732lHR-742is essentiallythe
nerve center of your stereosystem,lots of stuff
has been connected to it, in fact, every other stereo component you own. Soit's a good ideato
double-checkand confirm your work up to this
point.
1. Check all connections,first to confirm
the correct components are plugged in
to the appropriateHR-732lHR-742 inputs. Then make surelefts are
connectedto lefts,etc. Finally,doubledouble-checkyour speakerconnections.
2. Turn the HR-732/HR-742VOLUME
control down to MIN.
3. Now turn on your systemin the
following order:
A. Any componentsnot connectedto
the HR-732I HR-742' s SWITCHED
outlets.
B. The HR-732/HR-742(if this is the first
time it's been turned on, usethe main
POWERbutton).
4. SelectCD or PHONO (dependingon
what you've connected) using the
receiver'sfront panel INPUT SELECT
controlsor the remote control.
5. SelectSPEAKERS
A or B with the receiver
front panel pushbuttons.
6. PressPLAYon the sound sourceand
gently turn up the HR-732/HR-742's
VOLUME. Chancesare,vou'll hear
something. SuccesslIf the music source
is operatingand you hear silence,turn
to the sectionin this manual called
"HELP!"beginning
on page35.
7. Next, play your other sound sourcesto
confirm that they're hooked up
properly.
8. Rotatethe balancecontrol to the left
and seeif the sound movesin the same
direction. If it seemsto move the opposite way, your speaker-to-HR-7321
HR-742 connections have been reversed
and need to be switched. If the HR-7321
HR-742is part of a completely new system, you should checkspeakerphasing
aswell. This is coveredin mostlpeakei
owner's manuals.
Tuningan FM orAM station.
1 . Make surethat the appropriate antenna
is connectedto the HR-732lHR-742.
2. Turn on the HR-732I HR-742.
3 . SelectFM, AM or CATV (HR-742 onlv)
from the TUNERMODE buttons.
4 . Advance the HR-732I HR-742,svolume
control about 714of the way.
5 . EitherpressTUNING and then Up or
DO\^rN, or SCAN and then Up or
DO\4rN to tune a station.
6. Adjust the volume and make any other
you wish.
adiustments
SettingFM/AM stationpresets.
Your CarverHR-732/HR-742 canmemorize
and recallup to 30 FM and AM stationsin any order,i.e.Preset1 can be an FM stationat 101.5and
preset2 canbe an AM station atTlO etc. For convenience,we suggestthat you put your station
presetsin order of ho-woften you listen to the sta_
tion. But hey, it's your receiver...so
do it how
you want!
The HR-732lHR-742'smemory will retain preset information for about 3 days after it is
disconnected.This helps prev'entelectronicamnesiawhen moving your systemaround or from
power outages.
Automatic PresetSelection
If you just want to "browse',around the FM
and AM dialsto selectpresets....
1. SelectFM or CATV (HR-74}only) from
the TUNERMODE buttons.
2. Pressthe FREQENCY
PRESET
button if
necessaryso frequencyis displayed.
3. Pushand hold MEMO button.
4. Pushand releaseUP button, release
MEMO button. The tuner will scanuntil
it finds a strong station and play a
sampleof it.
5. If you want that station ("KWIZ! All
PunkPolka!")asa preset,do nothing
(excepthold the MEMO button down).
The station will be memorizedand
assigneda preset(startingwith 1). Then
the scanningwill continue up the FM
band.
6. If you don't want to storea station asa
preset,(" WZZ2...Fast-ActingSedative
EleuatorMusicfor theSedentary')pressthe
UP/SCANbutton again immediately.
7. When you've presetall the AM stations
you wart, pressFM and follow steps4
through 6 again.
Manual PresetSelection
If you know exactly which station you want to
commit to a preset,have a specialorder,or want
to re-program a preset(your favorite punk polka
station changedformats to elevatormusic),you
can manually tune and program presets.
1. SelectAM, FM or CATV (HR-742onlv)
from the TUNERMODE buttons.
2. Pressthe FREQENCYPRESET
button if
necessary
to get frequencydisplay.
3. PressUP or DO\MN until you,ve found
the desiredstation.
4. PressMEMO. The MEMOTvindicator
flashesfor about 5 seconds.
5. Pressthe appropriatepresetbutton (s).
For example,if you want to ,,title,,that
station Preset24, pressthe,'2,, and then
the " 4" button. If you wish to label it
Preset10,pressthe "1" and then the
uo,t.
6. Repeatsteps1 through 5 for other presets.
NOTE: If a station wasalreadyenteredinto a
given preset,it will be erasedif you choosethe
samepresetnumber for a new station.
Erasinga Preset
1. Selectpresetnumber.
2. PressMEMO and CLEAR.presetwill be
erased.
Entering ltGset Number
Sequences
Toselecta presetnumberlessthan I 0
(1 thru 9), the fastestwoyisto press
"0"
ond thenthenumber,forixomple
'
"05" forpreset
5. tf youdon't,the
receMer
waiting
Wusesforfiveseconds,
foro secondnumberto beentered
beforefinollydecidingthot youonf
intendedto entera sinalenumber.
Conversely,
youhavedbout5 seconds
to enterbothdigitsof a twodigitcode.
lf youtorylongerbetvveen
numben,the
receiver
willoctonlyon the firstdiqit
entered.
"Samplinq"
Stationswith
PresetScaln
j
ll
i!
If you want to knowwhat's playing on each
preset(or simply forgot which was which), the
HR-732 andHR-742 can give you a S-secondpreview of each preiet station, starting with preset1
and continuing until you find something you
like or give up and play a CD.
1. Pressthe PRESET
SCANbutton.
2. The PRESET
SCAN indicator light will
begin flashing.
3. PresstheUP or DOWN buttons to start
scanning through the presets.
4. When you find one you want to stay
with, press0/CLEAR:
j
i
l
Plalngatape
i
Turn on the cassettedeck and HR-7321
HR-742.
2. PressTAPEMONITOR on the HR-7321
HR-742front panel or TAPEon the
remote control.
3. After loading a tapeyou KNOW has music on it, pressPLAYon the cassette
deck.
4. Adj ust the HR-732I HR-742' s volume
control or pressDO\ 4\I or UP on the
remote control.
I
I
l
I
!
lI
l
lI
I
II
i
lt,
F
I
I
I
II
I
I
I
I
t
l.
Recordingatape
1 . Pressone of the input selectorbuttons
to choosethe sound sourcefrom which
you wish to record. Most likely, this will
be CD, PHONO or AM/FM/CAW
(tuner).
2. After loading a blank cassetteinto the
deckand making any necessaryadjustments for tape type, noise reduction,
etc.,put the deck into REC/PAUSE.
3. PressPLAYon the sound source(unless
of courseit's the HR-732/HR-742's
TUNER). The sound you hear coming
over your speakersis the SOURCE.
4. Adjust recordlevelson the deck and
begin recording.
5 . To hear the sound asit is being returned
from the cassettedeck,pressthe TAPE
MONITORbutton on the HR-7321
HR-742front panel.
Playinqvideothrouqh theHR-732/
(viaA{flodk-up
lR-717
1and2-page11)
1 . Turn on your video source(most likely a
VCR),the TV and the HR-732or
HR-742,
2. PressW/VID 1, CDV/VID 2orTVlytD
3 on the receiver'sfront panel or via
remote control. A corresponding indicator will light up on the receiver,s
displaypanel.
3. SelectSPEAKERs
A or B with the receiver
front panel pushbuttons.
4. Activate the video sourceand adjust the
HR-732lHR-742'svolume, tone controls
etc. to your own taste.
I To switch between video sources,simply pressthe appropriate input selection
button.
Mdeodubbing
1 . Turn on your video SOURCE(VID 1 or
VID 2), youTTARGETVCR(connected
to VID 3), the TV and theHR-7321
HR-742.
2. Selectthe appropriate video source(TV/
VID 1 or CDV/VID 2) via front panet
button or remote control.
3. "Cue up" the tape or LD to the place
where you want to start recording.
4. PressPLAYon the SOURCEand
RECORDONthc TARGETdCCK.
StereoTVsoundthroughyour
mainspeakers
(ifyouiW hasstereooutputs)
1. Turn onyourTVandthe HR-7321
HR-742.
2. PressTV/VID 1 on the receiver,sfront
panel or via remote control.
3. SelectSPEAKERs
A or B with the receiver
front panel pushbuttons.
4. Tune the station/program on the TV
and adjust the HR-732 IHR-742'svolume, tone controls etc. to your own
tastes.
T To switch to a VCR, simply pressthe
appropriate input selectionbutton.
Dependingon the TV, it's own volume
I
control may or mav not affect the
sound levei arriving at the HR-7321
HR-742. If VOLUME on the TV does
affectits AUDIO OUT volume, adiust
this volume relatively high and reduce
the HR-732lHR-742's
volume for reducedhiss.
Wake.upmode
The HR-Z32lHR-74Zcanbe usedwith
an exter_
nal timer to furn thereceiver on at a p.e_arrangeO
time. Consult your CarverDealerfor'informa_
uon on specialtimers designedfor stereo
equipment. you can also ise stanAirO
ptug_in
-a
houselight timer if it is rated fo;
;ti;;is
amps.
In either case,the receivert u, to n" p-_
grammed so that it can ,,remember,,
th'e source,
etc.when it comesbackon.
1. PressWAKE Up. The Wake Uo
indicatorwill beginto flash. r
2. While.,,WakeUp,,is lit, pressMEMO.
Now the ,,Memo,,indicalor flashesand
SELappearsin the alphanumeri.A;_
play.
3. Selectthe desiredinput. For AM or
-FM,
just pressthe numbbr of the preset.
4. PressI/ONCE or 2/DAILy (preset
but_
tons 1 and2), depending on whether
you want the receivertolust turn on
tothese settings once or every Ouyat tfre
sametime.
5. The "Wake Up,,indicatorwill once
agatnttght up. This meansyou,re
through and everything,ssetcorrectly.
6. Setthe timer and leavethe HR_7321
HR-742power button on.
I To review the wake_up,,program,,,press
WAKE Up twice any tim6 tfrE,"."iu'"i
i,
turned on. The actual wake_upprogiu_
(sourceand preset)will be ,"tu'i.i"J.''-^'
I If you'reusinga cassette
deckwith full
togic (so-called,,feathertouch,,)con_
trols for a source,make surettrat its
TIMERpLAy SWITCHis setto on. Oth_
erwiseit will ,,sleep,,
through the timei,s
call.
Erasewake-up
mode
1 . PressWAKE Up button if necessarvto
exit WAKE Up mode.(WAKEUpg'oei
out).
2. PressWAKE IJp twice,then CLEAR.
3 . Wake up settingswill then be erased.
timer
)StulgJhe.stgep
\rrK.-/lzonn
- The HR-T4}includes a built_in timer that turns
the receiveroff after a presetperiod of
time. It,s
handy for bedtime list^eningiut." yor,
,.rsp.ct
that you m.1rfa]l asleepand don,t;";ith;;;_
ceiveron.all night. nui it can alson""i!Jio
conround burglars(your receiverplays
for an
nour or so after you,ve left), or simply
asa timer
forthoseinstances
*h"" i;;i-pffiirsi
a.
something elseafter, for example, u'niff
no", of
listening.
1. While theHR-742is on, pressthe
SLEEp
button.
2. You will now pressthe SLEEpbutton
one or more times to ,,program,,the
duration before the receivdrautomati_
-cally shutsoff. Eachtime you pr"i,
SLEEP,
the amount of time befbreturn_
off increasesasfollows:
1stpush
10 minutes
2nd push
20 minutes
3nd push
30 minutes
4th push
40 minutes
5th push
50 minutes
6th push
60 minutes
7th push
90 minutes
8th push
120 minutes
9th push
returns to 10 minutes
and startsthe cycle again.
I
Note that the first 60 minutes ur"-oro_
grammedin ten minute incremenis_
just pressthe button once for each
ten
minutes more you want the HR_7ai-lo
stay on. After that, the duration in_
creases
by 30-minute intervals.
Cleaning
You'll want towipe off the HR_232/HR
_742,s
.rro-nt
panel and chassisfrom time_to_time
with a
dry cloth. If you fru,ne,omeinlns ,tuUoor,,
;oft,
ro remove,usea mild dish.soapor det-ergent
spar_
ingly applied to a soft cloth; d6nlt ur"ir?ot
or,
ammonia, or other strong solvents.
EnjoyngSonic
Holographf
Afterinstollingandconnedingthe
HR-732/HR-742
totherestofyour
stereoslrtem, you'llproboblybe
temptedto beginplayingmusicond
expeimentingwith SonicHologrophrf.
Weurgeyouto resistthistemptationfor
themoment.lf youdecideto try it
onwayl not muchwillhoppen.. .
you'reonlypott woythere.
becouse
Successfu
I Sonk Hologrophf depends
onproperloudspeoker
plocementond
otherimportontfodors. Reodthe
followingsectionond followthe
instruction
s ond recommendations
exodly.
lfsworth the effort
Making Sonic Holographf work properly
requiresattention to many factors that usually
aren't problemsor considerationsfor normal
stereoplayback.
The two most important factors are 1) accurate
relationshipsbetweenthe loudspeakersand listening chair, and 2) dealing with sound reflected
off surfacesin the listening room.
The real keys to this processare the relationships between the loudspeakersand chair. The
full musicalimagein SonicHolographf will
never occur unlessthe correct, accurateloudspeaker/listeningchair relationshipis achieved.
This whole processmight seemlike a lot of
trouble and effort, but you'll be amply rewarded
by the stunningly live imaging that Sonic
Holographf brings to your favorite music.
Roomexamples
The first two sample rooms show the loudspeakersand listening chair in perfectpositions
for SonicHolographf. But, aswe've mentioned,
it may not be practicalto placethem there. It's
your mission (should you acceptit) to find a
point where adjustments for successfulSonic
Holographf can coexist happily with the aesthetic considerationsof room decor. Look at the
diagramof Room A:
^ Here the loudspeakersprolect the long throw
of the room, yielding a large front-to-back depth
of the sonic stage.
Room B, where the loudspeakersproject the
short span of the room, has exceptional sonic
slagewidth and moderate front-to-back depth.
Naturally the choice of positioning dependson
your p€rsonal taste,aswell as furnishings and
overall room arrangement.
SampleRooms C, D, E and F show configurations that won't work well with Sonic
Holographf, though they may be acceptablefor
conventional stereoplayback. Aside from poor
loudspeakerplacement,excessivesound rehections from the side walls will hamper chancesof
achieving a good holographic i-ug".
Betterroom arrangementsare shown in
RoomsG and H.
Referagain to the diagram of Room B which
comparesfavorably to both Rooms G and H.
What makesit so good for Sonic Holographf?
First, asin the initial setup, the loudspeaktrs are
away from corners, side walls, and the wall behind the loudspeakers.There is a reflective wall
about one to four feet behind the listener, placing
them in a sound field made up of direct sound
from the loudspeakersand reflected sound from
the rearwall.
In Room G, with the loudspeakersstill away
from the side walls and corners,the listener has a
nearby rear wall to ensurefront-to-back depth in
the holographic image. As in anygood platement for Sonic Holographf, the loudspeakers
are toed-in toward the listening chair. This places
the listener on-axis with direct sound from the
loudspeakers,further reducing side-wall reflections at the sametime. NOTE: A few speaker
systemsare designedso that they are actaully
toed inwhen they appearto be facing directiy
forward. Try them in their normal position first.
Room H usesa trick to get the loudspeakersalmost againstthe wall behind them. This consists
of a sound-deadeningpanel placedbehind the
loudspeakers,
right afainst the wall.
Loudspeaker
designsand early
reflections
The HR-732IHR-742's Sonic Holographf
Sound ProcessingSystemusessignal delaysof a
fraction of a millisecond. In someloudspeakers,
reflections with similar delayscan be causedbv
protruding edgemoldings, grillework, or othei
front surfaceirregularitiesthat might dilute an
imagewhen the HR-732/HR-7
42's Sonic
Holographf feature is engaged.
Most modern loudspeakersuse sound-absorbing materials, rounded corners,or even
unconventional designsto reducetheseearly reflections. In all fairness,most loudspeakersrlvith
I
"conventional" front panels
won't have any serious reflection problems that could hurt or
weakenholographic images. However,if sound
imagesremain fuzzy andunresolved, even with
closeattention to all other factors,there'sa possibility it could be the result of early reflection off
front-panel irregularities.
The solution to this problem consistsof placing a cut-out of acousticfelt around the various
elementsin your loudspeakers.Checkwith your
Carverdealerfor details.
Basicset-upstepsfor m:xrm|Zng
SonicHolcigrapihy'
To perform the setup,you'll need a steeltape
measureand listening chair. Referto the illustration on the next page and follow this five-step
procedure:
1. Make surethe loudspeakersare away
from sideand rearwalls asindicatedin
the diagram.
2. Move'the loudspeakersso they areexactly six feet apartwith the listening
chair centeredand directly facing the
speakers.
3. Adiust the toe-in of the speakersso that
the outer edgeis ONE INCH closerto
you than the inner edge.
4. Placeyour listening chair so that it is
not directly againstthe rearwall of the
listening room.
5. Carefullymeasurethe distancefrom the
CENTERof the left speaker'stop woofer
to the CENTERof the listening chair.
Repeatthe measurementfor the right
speaker.Adjust the chair so that both
distances(D1 and D2 in the largeillustration on page33) areEXACTLYthe
same. Accuracywithin 1/4 INCH is desired.
The goal of thesestepshasbeen to placethe
listening chair at a point equidistantfrom both
loudspeakers(on what we call the stereoaxis).
Beingon this acousticcenterlineis very important to hearinga musicalimagein Sonic
Holograph/o. If you've followed the above instructions,a listenerseatedin the chair is all set
for initial experimentswith the SonicHolograph/o Sound ProcessingSystem.You'll
undoubtedly have to make someminor adjustments,but this shouldget thingsgoing.
SonicHolographf operation
Beforelistening to somemusicalselectionsin
SonicHolographf, you should know what to listen for. With correctlypositionedloudspeakers
and listening chair, the HR-732I HR-742'sSonic
Hologram Generatorsystemshould causemusical instruments and other sound sourcesto
spreadout in a large45" to-95" arc in front of you.
Soundimageswill exist to the left and right,
extending well beyond the limits of the loudspeakersand, occasionally,all the way to your
extremeleft and right.
You'll be able to perceivea sonic stagedepth of
10 to 20 feet with sound imagesclearly floating
behind and, from time-to-time, in front of the
loudspeakers.You can actually turn your head
and look at the sound images;theseimageswill
seemto stayput in space.Somesound images
may even seemto clearly emergefrom outside
the walls of the listening room.
A "testflighf'
If you've correctlyestablishedthe initial relationship betweenthe loudspeakers
and listening
chair, you should be ableto experienceSonic
Holographf at this point.
First,take a couple of minutes to "preflight
check" your stereosystem:
1. Visually checkout and confirm that all
componentsareconnectedin phase(al,
left-channeloutputs to left-channelinputs, right-channeloutputs to
right-channelinputs).
2. Check and confirm that the loudspeakersareproperly wired in-phase(positive
speakerterminalson the HR-7321
HR-742should be connectedto the
positiveterminalson the loudspeakers;
negative outputs to negative terminals
on the loudspeakers).
3 . If your systememploysan external
equalizerto flatten room response,we
recommendthat you switch it out of
the HR-732/HR-742signalpath. Wait
until you've had a chanceto experience
and experimentwith SonicHolography@beforere-equalizingthe room.
Room responsewill alsobe alteredby
any sound treatmentsusedto reduce
room reflections,so wait until all phases
of the Sonic Holographyo set-upare
completeto savetime and trouble.
4. If you are using a record for a sound
source/your phono cartridge should be
inspectedfor excessive
wear,dirt accumulations or improper alignment
which can simulatecertainacoustic
problemsthat causestrongone-side
imaging with weak imaging on the
other.
5 . Setthe HR-732lHR-742's
BALANCE
control to center. Setthe BASSand
TREBLEtone controlsto their center(12
o'clock) position.
' ' : . : : . . .. ,
. . . . :
' .
. : - . j '
'
"'-U"i
''-"'^
'
'
D2 ..
: . :
6. Pressthe HR-732/HR-742's
HOLOGRAMbutton.
7. PIaya stereorecording with only a few
instruments and the human voice for
first-time attempts at Sonic Hologra-
pht'.
You should now hear Sonic Holograph/e in
action.
SonicHolographf fine tuning
Carefully adjusting the following parameters
will resultin the bestpossibleHolographicimage:
1. Speakertilt-back angleand toe-in
angles.
2. Distanceof speakersand listening chair
from the walls behind them.
3. Room reflections.
Tilt-back and toe-in angles
If you are in a seatedposition, decreasingthe
tilt-back angle of most typical speakerswill result
in more high frequency and lessmidrange energy
at your listening position. It will alsolower the
soundstagecloserto the ground. If you arein a
standingposition, theseeffectsarereversed.Decreasingthe tilt will resultin lesshigh frequency
i
I
energy and will bring the midrange slightly
forward.
It is possibleto find a tilt-back angle that will
allow the tonal balanceto remain unchanged
from sitting to standing. This specificangle may
or may not result in the preferredtonal balance.
We recommend that vou determine vour favorite
tilt-back anglewhile s'eated.But rem'ember,
changing the tilt angle will also change the
height of the sonic image. The lesstilt, the lower
the image. Increasingthe tilt anglewill, however,often enhancethe dimensionalityof the
soundstage.
Toe-in (the lateral angle of the speakers)also
affectsSonic Holographt'. When experimenting
with speakerangle, make surethat the speakers
areequallytoed in. This can be done by measuring the distancefrom the inner and outer corners
to the backwall of the listening room.
Otherconsiderations
Here are some other factors which affect Sonic
Hologram generation:
Relationship of speaken to fiont and back
wails
- The_purposeof keeping the loudspeakersaway
from the walls is to provide a direct, ipeaker-toear sound path with a minimum of extra,
unwanted reflections off nearby room surfaces.
Just assecondaryreflected sound arrivals confuse
the ear in normal stereoplayback, they also ruin
attempts at creating holographic images. Always
keep in mind the importance of accurateloudspeaker/listeningchair relationshipsand keeping
the loudspeakersrelatively closetogether.
Room reflections
For the bestpossibleSonicHologram generation, the areaaround and behind your speakers
should be relativelydead. If the back and side
walls are too reflective, they may generateadditional sound reflections which can interfere with
SonicHolography@.
Acoustic treatrnent
The object of acousticallytreating the listening
room is to createwhat's known asa live end/dead
end configuration. This design makesthe area
around the loudspeakersacoustically "dead,,,
while the areaaround the listener is kept live.
Thus random sound reflectionsreacha listener
long after the direct sound,establishinga uniform sound field.
The reflections most in need of correction in
your listening room arethe usually strong,sidewall reflections from surfacesnear each
loudspeaker.
Any treatment should be appliedto the wall
extending two feet above and below the
midrange and high-frequencyloudspeakerelements, standing two to three feet from the
leadingedgeof the loudspeakercabinet.
The treatment itself may be quite simple.
Open, full book casesor recordshelves,heavy
fabri,changings, or draperiesmade of hear.ymaterial will work well asan acoustictreatment for
many situations. Soundpanelsmade from thick
cork or acousticaltile can be coveredwith a variety of other sound-absorbingmaterials,too.
Sinceside-wallsound treatmentsarerelatively
small (usually lessthan four feet by four feet),you
could use attractive grille cloths or foam panelsto
improve the appearance.However, loudipeaker
grille cloths or coversby themselvesare not effective sound absorbers.Scrapcarpetingcan be
effective when usedwith other sound-absorbing
materials.
HELP!
A troubleshootingguide
If you're having trouble or suspecta problem,
try som_esimple trouble-shooting first. Usually,
the problem lies elsewherein the systemor
connections,not with the HR-732orHR-742.
No sound(HR-732/HR-742does
not
light up)
1 . HR-732lHR-742 power off.
2. Line cord disconnected.
3 . Poor fit between AC plug and wall
receptacle.
4. Poweroff at wall receptacle(checkwith
testeror lamp).
q
Rememberthat the main power switch
and power LED must be on for you to be
ableto turn on theHR-732lHR:74Zby
remote control.
No sound(power OKand on)
1. HR-732lHR-742inputselectbuttons set
to inactive source.
2. TapeMonitor hasbeenpressed(check
the fluorescentdisplay)when there,sno
component connected to the loop.
3. MUTE button onHR-732lHR-742
remote is activated.
4. Wrong SPEAKER
button hasbeen
pressed.. . or neither hasbeen selected.
5. Selectedinput is simply not functioning
or the connecting hook up cablesare
malfunctioning.
6. Programsourcehas a problem. For example, tuner is between stations, tape is
on a blank segment,CD playeris on
pause.
No soundin one channel.
1. Defectivecable from music sourceto
HR-732tHR-742.
2. Speakerwire looseor disconnected.
3. HR-732lHR-742BALANCEcontrol fully
clockwiseor counterclockwise.
4. Speakerfuseblown.
!-"r.d howl, squealor whistlewhile
mprng.
1. TAPEMONITORisengagedwhilemicrophonesareconnectedto tape deck
for recording.
No soundwhen AM or FM is
selectd.
Remotecontrolwon't work
1. AM loop antennanotconnected.
2. FM dipole or external antenna has not
been connected.
3. Tuning section has not been tuned to
an existing station.
1. Batteries
aredeador missing.
2. Remote is to6 far from or at too much of
an angle in relation to the remote sensor
on the HR-732|HR-742.
3. Remote sensoronHR-732lHR-742 or rcmote control transmitter panel are
dirty.
Solovoices
or instrumentssound
thin, shrillor distorted.
SeruiceAssistance
1. Treble tone control set to maximum
boost.
2. Phono cartridge wired out of phase
(re-readinstructionswhich camewith
the cartridge and check out all four connections betr,veencartridge and
tonearm).
3. Speakers
are connectedout of phase.
Soundisweakwhen PHONOinput is
selectd.
1. A low-output moving coil cartridgehas
been connected. Add a step-up
transformer such asthe Carver MCt.
Hum and constantnoise
1. Defectivesignalcables.
2. Improper fit between signal cable plug
and sockets.
3. Signal cableshave been routed too close
to AC cables,power transformers or
motors.
4. Turntable or cassettedeck may be oriented in such a way that it is picking up
induced hum from AC wall wiring.
Change component's position slightly.
Intermittent noise,voicesor hum
CB,
causd by RFlinterferencefrom
WorAM radio.
1 . Determine where the RFI (radio frequency interference) is entering the
systemby disconnecting individual
sound sources,then the HR-7321
HR-742.
2. Use higher quality interconnect cables
with better shielding.
3 . Wrap turntable input cablesin
aluminum foil.
4 . Place0.01 microfaradcapacitorsacross
the HR-732lHR-742'sleft and right
speakerterminals.
We suggestthat you read the LIMITED WARRANTYcompletely to fully understand what your
servicecoverageconstitutes and its duration.
Pleasepromptly complete and return the WARRANTYREGISTRATIONCARD to make
administrating your LIMITED WARRANTY
quicker and easierlater on. AIso be sureto save
the salesreceiptin a safeplace. It will be necessarvfor warranWservice.
if your HR-7i2lHR-742 shouldrequireservice,
we suggestyou first contact the Authorized
Carver Dealer from whom you purchasedit.
Should the Dealerbe unable'to take careof your
needs,you may contact the CARVERServiceDepartment by phoning (206) 77 5-6245,or by
writing CARVERCORPORATION,ServiceDepartment, P.O.Box 1237,Lynnwood, WA 98046. We
will then direct you to the nearestin our national
network of Authorized Warranty ServiceCenters,
or give you detailed instructions on how to return the product to us for prompt action.
We wish you many hours of musical enjoyment. If you should have questionsor
comments,pleasewrite to us at the address
above.
PatentNotice(our lawyerinsists.. .)
The circuitry and application of the CARVER
SonicHolographf SoundProcessingSystemare
protectedby United StatesPatent4,218,585and
correspondingforeign patents.
O 1991All rights reserved,CARVERCORPORATION P.O.8oxL237, Lynnwood, WA 98046
QOO 77 5-1202.Pttb#910303-4;Part#990-2113-00. Written and desktop-publishedin
America
PRINTEDIN TAPAN
'{{
{
{
a
.
T
d
{
Printed
in J6pan
J
124JW1210
,
. {
'
'
.
> ,
di
Source Exif Data:
File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.7 Linearized : No XMP Toolkit : Adobe XMP Core 4.0-c316 44.253921, Sun Oct 01 2006 17:14:39 Create Date : 2008:01:31 21:30:27-05:00 Creator Tool : Canon Modify Date : 2009:03:07 15:21:16-06:00 Metadata Date : 2009:03:07 15:21:16-06:00 Producer : Format : application/pdf Document ID : uuid:a32c27a3-f0e8-404e-a465-0d5568e51f5d Instance ID : uuid:9aaf6faf-7074-4679-9fb3-ab1b4711b862 Has XFA : No Page Count : 37 Creator : CanonEXIF Metadata provided by EXIF.tools