Crate Amplifiers Gtx120 Users Manual

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2015-02-02

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G T X 212

G T X 12 0

Owner’s Manual

GTX120/212 Guitar Amplifier
DSP & C hannel T racking

with

Congratulations!
You are now the proud owner of the Crate GTX120/212 amplifier. This rugged amplifier combines outstanding features with serious clean and distorted sounds. An easy to operate DSP section
lets you dial in a variety of digital effects including reverbs, delays, octave and wah-wahs – with a
separate level control. Crate’s unique Channel Tracking feature means that as you switch between
channels and gains, the DSP automatically “tracks” the changes - your DSP settings for each channel are stored and automatically recalled! The supplied three-button footswitch allows you to select
channels, change the overdrive gain, and turn the DSP on and off by “remote control.”
Like all Crate products, your GTX120/212 is designed by musicians, and built using only the
best components. Extensive testing confirms that this amplifier is the absolute best it can be.
In order to get the most out of your new amplifier, we strongly urge you to read the information
contained in this manual before you begin playing.
And thank you for choosing CRATE.

TABLE OF CONTENTS:
The Digital Signal Processor . . . . . . . . . . . . . . . . . . . . .3
Channel Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4, 5
Suggested Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . .7
Technical Specifications . . . . . . . . . . . . . . . . .back cover

CAUTION

PRECAUCION

ATTENTION

RISK OF ELECTRIC SHOCK
DO NOT OPEN

RIESGO DE CORRIENTAZO
NO ABRA

RISQUE D'ELECTROCUTION
NE PAS OUVRIR

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE. TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT
REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

ADVERTENCIA: REDUCIR EL RIESGO DE FUEGO O CHOQUE ELÉCTRICO, NO LE EXPONE DE ESTE APARATO A LLUVIA O HUMEDAD. PARA
DISMINUOIR EL RIESGO DE CORRIENTAZO. NO ABRA LA CUBIERTA.
NO HAY PIEZAS ADENTRO QUE EL USARIO PUEDO REPARAR DEJE
TODO MANTENIMIENTO A LOS TECHNICOS CALIFICADOS.

ATTENTION: POUR REDUIRE D'ELECTROCUTION NE PAS
ENLEVER LE COUVERCLE. AUCUNE PIECE INTERNE N'EST
REPRABLE PAR L'UTILISATEUR. POUR TOUTE REPARATION,
S'ADRESSER A UN TECHNICIEN QUALIFIE.

IMPORTANT SAFETY INSTRUCTIONS
•
•
•
•
•

READ, FOLLOW, HEED, AND KEEP ALL INSTRUCTIONS AND WARNINGS.
DO NOT OPERATE NEAR ANY HEAT SOURCE AND DO NOT BLOCK ANY VENTILATION OPENINGS ON THIS APPARATUS.
DO NOT USE THIS APPARATUS NEAR SPLASHING, FALLING, SPRAYING, OR STANDING LIQUIDS.
CLEAN ONLY WITH LINT-FREE DAMP CLOTH AND DO NOT USE CLEANING AGENTS.
ONLY CONNECT POWER CORD TO A POLARIZED, SAFETY GROUNDED OUTLET WIRED TO CURRENT ELECTRICAL CODES AND
COMPATIBLE WITH VOLTAGE, POWER, AND FREQUENCY REQUIREMENTS STATED ON THE REAR PANEL OF THE APPARATUS.

• PROTECT THE POWER CORD FROM DAMAGE DUE TO BEING WALKED ON, PINCHED, OR STRAINED.
• UNPLUG THE APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERIODS OF TIME.
• ONLY USE ATTACHMENTS, ACCESSORIES, STANDS, OR BRACKETS SPECIFIED BY THE MANUFACTURER FOR SAFE OPERATION AND TO AVOID INJURY.

• THIS APPARATUS DOES NOT OPERATE NORMALLY AND REQUIRES SERVICE WITH ANY PHYSICAL DAMAGE FROM IMPACT OR
ANY EXPOSURE TO MOISTURE.

• SERVICE MUST BE PERFORMED BY QUALIFIED PERSONNEL.
• OUR AMPLIFIERS ARE CAPABLE OF PRODUCING HIGH SOUND PRESSURE LEVELS. CONTINUED EXPOSURE TO HIGH SOUND
PRESSURE LEVELS CAN CAUSE PERMANENT HEARING IMPAIRMENT OR LOSS. USER CAUTION IS ADVISED AND EAR PROTECTION IS RECOMMENDED IF UNIT IS OPERATED AT HIGH VOLUME.
EXPLANATION OF GRAPHICAL SYMBOLS:
EXPLICACION DE SIMBOLOS GRAFICOS:
EXPLICATION DES SYMBÔLES GRAPHIQUES:

"DANGEROUS VOLTAGE"

=

“VOLTAJE PELIGROSO”
"DANGER HAUTE TENSION"

"IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL"

=

“ES NECESARIO QUE EL USUARIO SE REFIERA AL MANUAL DE INSTRUCCIONES.”
"REFERREZ-VOUS AU MANUAL D'UTILISATION"

GTX120/212 Guitar Amplifier
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The Digital Signal Processor:
Crate’s Digital Signal Processing offers 16 exciting digital effects, accessible through the DSP
Mode control. The effects are described below.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

small room reverb
medium room reverb
large room reverb
concert hall reverb
short slapback w/small room reverb
medium delay w/plate reverb
long delay w/large room reverb
slow deep flange w/reverb
flange w/reverb & delay
slow chorus w/reverb
chorus w/reverb & delay
rotating speaker
octave down
touch wah
inverse wah
doubler

Use the DSP Mode control to access
any of the 16 built-in digital effects.
Use the Level control to mix in the
desired amount of each effect.

Channel Tracking:
Your Crate GTX120/212 gives you the power of Channel Tracking! Once you select a DSP setting for each channel, Channel Tracking recalls those DSP settings automatically – without changing the DSP controls! For example:
• Select the Clean channel. Set the DSP Mode to “8” (slow deep flange w/reverb)
• Select the Rhythm/Solo channel, Gain 1. Set the DSP Mode to “10” (slow chorus w/reverb)
(the setting for the Clean channel is now saved to memory)

• Select the Rhythm/Solo channel, Gain 2. Set the DSP Mode to “14” (touch wah)
(the setting for the Rhythm/Solo channel, Gain 1 is now saved to memory)

• Reselect the Clean channel (the setting for the Rhythm/Solo channel, Gain 2 is now saved to memory)
Now when you go back to the Clean channel, even though the DSP Mode was last set to “14”
(touch wah), Channel Tracking automatically recalls the last setting for the Clean channel – in this
example, “8” (slow flange). Change to the Rhythm/Solo channel, Gain 1, and “10” (chorus) is
recalled. Change to the Rhythm/Solo channel, Gain 2, and “14” (touch wah) is recalled. That’s the
power of Channel Tracking!
(Note: Even when the power is turned off, Channel Tracking still retains the settings – until you change them!)

3

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The Front Panel:

1

2

3

4

5

6

7

8

9

10

1: INPUT: Use this 1/4” jack to connect your guitar to the amplifier by means of a shielded instrument cable.
RHYTHM/SOLO CHANNEL: A high gain channel giving you sounds from a slight edge to serious overdrive.
2: RHYTHM GAIN 1: Use this control to adjust the amount of light distortion for the Rhythm/Solo channel. Gain
1 produces less intense distortion than Gain 2 (#3) and is active when the Rhythm/Solo Gain switch (#5) is in
the out position.
3: SOLO GAIN 2: Use this control to adjust the amount of heavy distortion for the Rhythm/Solo channel. Gain
2 produces more intense distortion than Gain 1 (#2) and is active when the Rhythm/Solo Gain switch (#5) is
depressed.
4: SHAPE: Use this control to “dial in” the tone for the Rhythm/Solo channel when Gain 2 is selected. Rotating
the control counterclockwise enhances the mid frequencies, while rotating the control clockwise enhances the
low and high frequencies.
5: RHYTHM/SOLO SWITCH: Use this switch to select which gain control is active for the Rhythm/Solo channel. With the switch in the out position, Gain 1 (Rhythm) is selected. When the switch is depressed, Gain 2
(Solo) is selected.
6: LOW: Use this control to adjust the low frequency level of the Rhythm/Solo channel.
7: HIGH: Use this control to adjust the high frequency level of the Rhythm/Solo channel.
8: LEVEL: Use this control to adjust the output level of the Rhythm/Solo channel.
9: CHANNEL SWITCH: Use this switch to select the desired channel. With the switch in the out position, the
Clean channel is selected. When the switch is depressed, the Rhythm/Solo channel is selected.
CLEAN CHANNEL: A normal gain channel designed to give you sounds from crystal clear to medium distortion.
10: LEVEL: Use this control to adjust the output level of the Clean channel.
11: LOW: Use this control to adjust the low frequency level of the Clean channel.
12: MID: Use this control to adjust the midrange frequency level of the Clean channel.
13: HIGH: Use this control to adjust the high frequency level of the Clean channel.
14: DSP LEVEL: Use this control to adjust the amount of digital effect: in its fully counterclockwise position the signal will be “dry” (without any effect). As you rotate the control clockwise the amount of effect
increases.
15: DSP MODE: Use this control to select one of the 16 built-in digital effects. The effects are shown on
page 3.

4

GTX120/212 Guitar Amplifier
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12

13

14

15

16

17

with

18

16: INSERT: Use this jack to connect an external effects device to the amplifier. Use a stereo 1/4” male Y connector: ring = send, tip = return, sleeve = ground. (Refer to the illustration at the bottom of page 5.)
17: EXTERNAL SPEAKER: Use this jack to connect an external speaker to the amplifier. This jack is wired in
series with the internal speaker(s) which remain active when an external speaker is connected.
18: POWER: Use this switch to turn the amplifier on (top of the switch depressed) and off (bottom of the
switch depressed). The switch is illuminated when the amplifier is on.
19: AC LINE CORD (rear panel, not shown): This grounded power cord is to be plugged into a grounded
power outlet, wired to current electrical codes and compatible with the voltage, power, and frequency requirements stated on the rear panel. Do not attempt to defeat the safety ground connection.
20: FUSE (rear panel, not shown): The fuse protects the amplifier from damages caused by a faulty AC
power source and/or other problems. If the fuse opens, replace it ONLY with the same size and type. If fuses
continue to fail, check the AC source – if the source is okay, contact your Crate dealer for service information.
21: CHANNEL SELECT / GAIN FOOTSWITCH JACK (rear panel, not shown): Use this jack to connect the 1/4”
stereo plug on the footswitch cable to the three-button footswitch (supplied). This allows you to remotely switch
between the Clean and Rhythm/Solo channels and between Rhythm Gain 1 and Solo Gain 2 of the Rhythm/Solo
channel.
22: REVERB FOOTSWITCH JACK (rear panel, not shown): Use this jack to connect the 1/4” mono plug on the
footswitch cable to the three-button footswitch (supplied). This allows you to remotely turn the DSP function on and
off.
Stereo-to-mono Y-cord:
Y-adapter and 2 cables:
CONNECTING TO THE INSERT JACK:
to Insert
jack

(STP201, 3'
STP202, 6'
STP203, 9')

RETURN
SEND
GROUND

TIP
RING
SLEEVE

to Insert
jack

(YPP117)

R IN G

T IP

RING

T IP

The Insert jack (#16) allows you
to patch an external effects
device into the amplifier prior to
its power amp stage. Use Crate’s
STP201, STP202 or STP203
stereo-to-mono Y cord or an
adapter such as Crate’s YPP117
and two 1/4” mono signal cables
to connect the effect as shown in
the adjacent illustration.

TIP
RING
SLEEVE

(1/4"-TO-1/4"
MONO CABLES)

to
effect
"OUT"
jack

to
effect
"IN"
jack

External Effect

to
effect
"OUT"
jack

to
effect
"IN"
jack

External Effect

5

GTX120/212 Guitar Amplifier
DSP & C hannel T racking
Suggested Settings:
"Sweet 'n Clean"

"Just a 'Lil Nasty"
O

"Pol

"Octave Down 'n Dirty"

"Wah Full H

"Mean & Obscene"
IN

6

with

GTX120/212 Guitar Amplifier
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System Block Diagram:

INPUT

CLEAN
CHANNEL

BUFFER

CHANNEL
SELECT

LEVEL LOW MID HIGH
FLEX WAVE
STAGE
RHYTHM/SOLO
CHANNEL

EQ

SHAPE
ACTIVE
GAIN 2
LOW HIGH LEVEL

GAIN 1
SHAPE

MIX
AMP
DSP

INSERT
LEVEL
POWER
AMP
SPEAKER

MODE
DAMPING
CIRCUIT

EXT.
SPEAKER

7

GTX120/212 Guitar Amplifier
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GTX120/212 TECHNICAL SPECIFICATIONS:
Output Power Rating
Speaker Size and Rating

GTX120
GTX212

Input Impedance
Total System Gain

Overdrive Ch
Clean Ch
Maximum Input Signal Accepted
Rhythm/Solo Channel
Low Control
Shape Control
High Control
Clean Channel
Low Control
Mid Control
High Control
Power Requirements
Size and Weight

GTX120
GTX212

120W RMS @ 5% THD, 4Ω, 120 VAC
(1) Custom Design 12”, 4Ω
(2) Custom Design 12”, 8Ω
470kΩ
Gain 1: 88dB, all controls @10; Gain 2: 110dB
58dB, all controls @10
7 volts peak-to-peak
11dB range @ 80Hz
Proprietary Circuit
10dB range @10kHz
22dB range @ 80Hz
14dB range @ 600Hz
28dB range @ 10kHz
120 VAC, 60Hz, 95VA; 100VAC, 50/60Hz, 95VA;
230VAC, 50Hz, 95VA
17-1/2” H x 20” W x 11” D, 34 lbs.
21” H x 26.5” W x 11” D, 50 lbs.

The GTX120/212 is covered with a durable charcoal gray Tolex material: wipe it clean with a lint-free cloth.
Never spray cleaning agents onto the cabinet. Avoid abrasive cleansers which would damage the finish.
Crate continually develops new products, as well as improves existing ones. For this reason, the specifications
and information in this manual are subject to change without notice.

Declaration Of Conformity
#34, Effective 01-01-2001
Manufacturer’s Name:
Production Facility:
Production Facility:
Shipping Facility:
Office Facility:
Product Type:
Complies with Standards:
LVD:
Safety:
EMC:

SLM Electronics
11880 Borman Drive, St. Louis, MO 63146, USA
700 Hwy 202 W, Yellville, AR 72687, USA
1400 Ferguson Ave., St. Louis, MO 63133, USA
1400 Ferguson Ave., St. Louis, MO 63133, USA
Audio Amplifier
92/31/EEC, 93/68/EEC, & 73/23/EWG
EN60065
EN55013, EN55020, EN55022, EN61000-3-2,
& EN61000-3-3

Supplementary information provided by:
SLM Electronics - R & D Engineering
1901 Congressional Drive, St Louis, MO 63146, USA
Tel.: 314-569-0141, Fax: 314-569-0175

www.crateamps.com
@2002 SLM Electronics, a division of St. Louis Music, Inc • 1400 Ferguson Avenue • St. Louis, MO 63133
47-476-07 • 04/02



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