Bryston Bp6 Users Manual

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BP6

For preamp models

BP6, BP6DA & BP6P

PREAMPLIFIER

OWNER’S MANUAL

IMPORTANT SAFETY INSTRUCTIONS

The lightning flash with arrowhead symbol within an equilateral triangle, is intended to alert the user to the presence of un-insulated

“dangerous voltage “ within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to

persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance

(servicing) instructions in the literature accompanying the product.

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A

grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the pro-

vided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the

apparatus.

11. Only use attachments/accessories specified by the manufacturer.

12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is

used use caution when moving the cart/apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.

14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-

supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or

moisture, does not operate normally, or has been dropped.

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.

DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR SPLASHING AND ENSURE THAT NO OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES, ARE

PLACED ON THE EQUIPMENT.

TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM THE AC MAINS, DISCONNECT THE POWER SUPPLY CORD PLUG FROM THE AC

RECEPTACLE.

THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REMAIN READILY OPERABLE.

BRYSTON LIMITED WARRANTY

Bryston analog audio circuits are warranted to be free from manufacturing defects for twenty (20) years from the original date of manufacture. The

warranty includes parts and labour.

Bryston Digital circuits and cables are warranted for five years from the original date of manufacture. The warranty includes parts and labour.

Bryston products having motorized moving parts, excluding motorized volume controls, are warranted for three years from the original date of manu-

facture. The warranty includes parts and labour.

Bryston will remedy the problem by repair or replacement, as we deem necessary, to restore the product to full performance. Bryston will pay ship-

ping costs one way (usually the return portion) during the first three years of warranty coverage.

In the event of a defect or malfunction, contact Bryston’s repair centers for return authorization. Products must be returned using original packaging

material only. Packing material may be purchased from Bryston if necessary. This warranty is considered void if the defect, malfunction or failure of the

product or any component part was caused by damage (not resulting from a defect or malfunction) or abuse while in the possession of the customer.

Tampering by persons other than factory authorized service personnel or failure to fully comply with Bryston operating instructions voids the warranty.

This warranty gives you specific legal rights and you may also have other rights which may vary from province to province and country to country.

As of 2006-02-22 Bryston will only warranty Bryston products purchased through authorized Bryston dealers. Bryston products with a date code

of 0608 or higher (date code format is “yyww”, where “yy” is the two least significant digits of the year and “ww” is the week of the year) must be

accompanied by a copy of the bill-of-sale from a Bryston authorized dealer to qualify for warranty service. The warranty is transferable from the original

owner to a subsequent owner as long as a copy of the bill-of-sale from the original authorized Bryston dealer accompanies the re-sale. The copy of the

bill of sale to any subsequent owner need ONLY include the Name of the Bryston Authorized Dealer and the Model and Serial number of the Bryston

product The warranty will only be honored in the country of the original purchase unless otherwise pre-authorized by Bryston.

Postal address: P.O. BOX 2170, Stn. Main

PETERBOROUGH, ONTARIO

CANADA K9J 7Y4

Courier address: 677 NEAL DRIVE

PETERBOROUGH, ONTARIO

CANADA K9J 6X7

PHONE: 705-742-5325

FAX: 705-742-0882

E-mail: cdnser@bryston.ca

79 COVENTRY ST., Suite 5

NEWPORT, VERMONT

U.S.A. 05855-2100

PHONE: 802-334-1201

FAX: 802-334-6658

E-mail: usaser@bryston.ca

BRYSTON SERVICE in CANADA:BRYSTON SERVICE in the USA:

contact your local distributor or

CHECK OUR WEB SITE: www.bryston.ca

E-MAIL BRYSTON DIRECTLY: cdnser@bryston.ca

FAX BRYSTON DIRECTLY: 01-705-742-0882

PHONE BRYSTON DIRECTLY: 01-705-742-5325

BRYSTON SERVICE outside Canada and the USA:

2

BP6 Preamplifiers

GENERAL SPECIFICATIONS:

Frequency Response: 20Hz-20kHz ±.05dB

Maximum Output: 15 Vrms

IMD/THD: <0.0015% at 3 volts out

Sensitivity: 500 mV (excluding phono inputs)

Noise: -100dB (Ref. 500mV input, 20-20kHz)

BP6 Features: Base model

 4 pair of line level inputs (8 gold plated RCA jacks)

 1 tape loop (2 pair of gold plated RCA jacks)

 2 pair of parallel outputs (2 pair gold plated RCA jacks)

BP6P Features: with Phono Equalization Module

 3 pair of line level inputs (8 gold plated RCA jacks)

 1 pair moving magnet Phono inputs (2 gold plated

RCA jacks)

 1 tape loop (2 pair of gold plated RCA jacks)

 2 pair of parallel outputs (2 pair gold plated RCA jacks)

BP6DA Features: with Digital-to-Analog Converter Module

 3 pair of line level inputs (8 gold plated RCA jacks)

 1 SPDIF digital input (gold plated RCA jack)

 1 tape loop (2 pair of gold plated RCA jacks)

 2 pair of parallel outputs (2 pair gold plated RCA jacks)

Options:

 Silver or Black faceplate, 17” or 19” wide

 Rack mount (17” faceplate plus two 1” rack ears)

 Hand held infra-red remote control (silver or black)

Dimensions:

 17” wide version (standard): 17” x 2.25” x 11”

43.2cm x 5.7cm x 28cm

 19” wide version: 19” x 2.25” x 11”

48.3cm x 5.7cm x 28cm

 Rack mount version: 19” x 2.25” x 11”

48.3cm x 5.7cm x 28cm

Weight:

 actual: 8.4 lb. (3.8Kg)

 shipping: 12 lb. (5.4Kg)

Additional Specifications for BP6DA:

Input Sample Rate: 16kHz to 108kHz.

Word Length: 16, 18, 20, 24 Bit

Data format: SPDIF standard

Distortion: < 0.002%, 20Hz-20kHz

Signal to Noise Ratio: > 100dB

Frequency Response: 20Hz-20kHz ±.1dB

Additional Specifications for BP6P:

Phono Inputs:

Distortion: <0.005%, IMD or THD, any frequency

or combination of frequencies from 20-

20kHz, at rated output or below.

Rated Noise: Phono: -80dBA referred to an input of 5

millivolts RMS @ 1kHz

RIAA Accuracy: Within less than +/- 0.05dB from 20-

20kHz inclusive

Input sensitivity: 5mV

Serial Number, Date Code, Electrical Ratings & Model

ATTENTION: To obtain the model number and serial

number of this product please refer to the label attached

to the rear panel.

This label also contains electrical ratings and the date

code (date of manufacture). The date code is a 4 digit

code wherein the first 2 digits are the two least significant

digits of the year (e.g. “05” means the year 2005) and the

last two digits are the week of the year (numbered from

01 to 52)

3

BP6 Preamplifiers

INTRODUCTION

Thank you for choosing a Bryston Preamplifier. Bryston

welcomes any suggestions you may have, or comments

regarding the operation of your amplifier. We consider you,

our customer, to be Bryston’s most important resource,

and your opinion is very much appreciated.

There are three different variations of the BP6 preamp:

 ● BP6 this is the base model

 ● BP6DA includes a D/A converter with an SPDIF input

 ● BP6P

includes Bryston’s discrete moving-magnet

phono equalization stage

N.B. We recommend that you keep all original packing materials in the event

that your Bryston preamp may need to be returned for servicing. Any of the

original packaging materials that Bryston needs to supply in order to safely return

serviced equipment may be chargeable.

SETUP

Bryston BP6 pre-amps with the remote-control option,

should be placed where there is a direct line-of-sight

between the hand-held remote and the remote infra-red

sensor eye located on the left side of the pre-amplifier’s

front panel.

If you purchased the BP6P, which includes a Phono

section, avoid placing the preamplifier directly on top of

your power amplifier. Power amplifiers usually employ

large power supplies and the transformers) in the power

supplies can cause interference (hum) with the sensitive

phono section inside the pre-amp.

ANALOG AUDIO CONNECTIONS to OTHER

EQUIPMENT

All inputs and outputs employ fully discrete active circuitry

and all input and output connectors have gold plated con-

tact surfaces. Only cables with high quality gold plated

connectors should be used with your pre-amp to avoid

noise and distortion from the corrosion that will eventually

appear on poorly plated cable connectors.

Connect the pre-amplifier’s left and right outputs to the

appropriate left and right input jacks on your power ampli-

fier. Connect your CD player, tuner, tape deck, video

recorder, or laser disc, etc. to the specific left/right pre-

amplifier inputs. With the phono stage equipped model

(BP6P) connect your phono cables to the phono input

jacks. If your turntable leads have a separate ground wire,

it may be connected to the ground post adjacent to the

phono inputs on the rear panel.

The tape loop may be used to insert a surround sound

processor, cassette tape deck or video tape recorder into

your system. Plug your tape deck or external processor’s

input cables into the “To Tape” jacks, and the processor or

deck’s output cables into the “From Tape” jacks at the rear

of the pre-amp. The tape or processor loop may be oper-

ated via the “Tape/normal” toggle switch located on the

front panel of the preamplifier.

HEADPHONE JACK

A quarter inch stereo (3 conductor) headphone jack is locat-

ede on the front panel of all BP6 pre-amps. We recommend

the use of headphones with input impedances between

50 ohms and 600 ohms. Headphones with an impedance

above 600 ohms may experience some problems attaining

sufficient volume levels. The main outputs will be muted

when a phone plug is inserted into the headphone jack.

TAPE outputs are not muted. You can adjust the volume

setting of the headphones by using the volume control on

the front of the BP6 or by utilizing the remote control if your

unit is so equipped. The headphones cannot be muted with

the remote control unit. Use caution when disconnecting the

headphones as the loudspeakers will be immediately re-

connected at the volume level indicated by the front panel

volume control.

ANALOG AUDIO INPUTS

BP6 preamplifiers are equipped with 4 pairs of RCA input

connectors and one pair of RCA tape input jacks. All RCA

jacks are gold plated. Input sensitivity is 500mV and input

impedance is 50K ohms. See also PHONO EQUALIZATION

MODULES for Phono input details.

ANALOG AUDIO OUTPUTS

There are two pairs of parallel RCA main outputs and one

pair of RCA tape output jacks. They are capable of driving

up to 15 volts into any load of 600 ohms or greater.

TAPE LOOP

Tape Outputs: The “TO TAPE” outputs are selected

by the rotary ‘SELECTOR” knob and are provided as a

recording output. This feed is unaffected by the operation

of other front panel controls.

Tape Inputs: The “FROM TAPE” (unbalanced RCA)

inputs are useful for monitoring tape playback or pro-

cessed signals. Moving the “Tape/Normal” toggle to Tape’

(up) position monitors the recorded signal on recorders

equipped with a separate playback head, or the processed

signal when using a signal processor. Input sensitivity is

500mv, input impedance is 10K ohms.

REMOTE CONTROL (optional)

The BP6 preamplifiers are available with

an optional hand held infra-red remote

control unit with the following functions:

VOLUME is remotely controlled via the

▲ (up) and ▼ (down) arrow buttons. A

motorized volume control ensures the

lowest distortion with maximum long term

reliability. It is also manually accessible on

the front panel.

MUTE attenuates the main outputs of

the preamplifier, but not the tape outputs

(labeled “To Tape”).

4

MOVING MAGNET PHONO EQUALIZATION

MODULE (optional)

Bryston’s optional phono stage circuitry features highly

accurate equalization, extremely low noise and distor-

tion and provides headroom margins sufficient to prevent

overload from any known phono source. If your turntable

provides a separate ground lead system noise may be mini-

mized by connecting it to the ground post adjacent to the

phono inputs on the rear panel.

Input impedance is 50K ohms and sensitivity is 5mV.

DIGITAL AUDIO INPUT MODULE (optional)

The BP6DA model contains one SPDIF compatible digital

audio input. To select the digital audio input, set the rotary

SELECTOR to DAC. The digital-to-analog convertor can

handle input sample rates from 16KHz to 108KHz, and

word lengths of 16, 18, 20 or 24 bits.

VISUAL INDICATORS

The bi-colour LED (light emitting diode) located on the

front panel lights GREEN when the power is on and RED

when the power is on and the output is muted

FRONT PANEL CONTROLS:

● VOLUME CONTROL: Rotary control varies the output

level to the main PREAMP OUT outputs (does not effect

‘TO TAPE’ outputs).

● BALANCE CONTROL: is a tailored-inflection type

which has very gradual action near the center of rota-

tion allowing fine adjustments to the stereo image.

For convenience the electrical center of the control is

detented.

● SOURCE SELECTOR SWITCH: Rotary switch deter-

mines which input will appear at the “TO TAPE” outputs

for recording or processing, as well as determining

which program is available at the Main outputs. (When

the “TAPE/NORMAL” switch is in “Tape” position,

“FROM TAPE” inputs appear at Main Outputs).

● TAPE/NORMAL SWITCH: “Normal” position monitors

whichever input is selected at the rotary SELECTOR

switch. “Tape” position provides monitoring of the

“FROM TAPE” input for A/B comparison with the source.

Should an external processor or equalizer be connected

in the tape loop, the ‘TAPE / NORMAL” switch will act

as an in/out switch for the external equipment.

BP6 Preamplifiers

BRYSTON LTD., 677 NEAL DRIVE, P.O. BOX 2170, PETERBOROUGH, ONTARIO CANADA K9J 7Y4

BP6_MANUAL_20060324