GX-212 GUITAR
AMPLIFIER
OWNER’S MANUAL
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GX-212 Amplifier
Congratulations!
You are now the proud owner of the Crate GX-212 guitar amplifi-
er. These rugged amplifiers deliver serious clean and distorted
sounds through two premium 12” Crate Custom speakers. Channel
selection, Crate’s exclusive Shape circuit, and DSP on/off are con-
trollable by the supplied three-button footswitch. An insert jack allows
virtually noise-free connection of your favorite effects.
Like all Crate products, your GX-212 is designed by musicians,
and built using only the best components. Extensive testing ensures
you 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 go over the information contained in this manual before
you begin playing.
And thank you for choosing
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GX-212 Amplifier
1: INPUT: Connect your guitar here by means of
a shielded instrument cable.
8: LEVEL: Use this control to adjust the output
level of the Overdrive Channel. Use this control
along with the Gain and Shape controls (#2, 3 &
4) to create a wide variety of sounds.
OVERDRIVE CHANNEL: A high gain channel
giving you sounds from a slight edge to serious
overdrive.
9: CHANNEL SELECT: Use this switch to select
the Clean channel (switch out) or the Overdrive
channel (switch depressed). One of the triangu-
lar LEDs beside the switch will illuminate to indi-
cated which channel is selected. A footswitch
(#21) overrides this switch.
2: GAIN 1: Gain 1 is active only when the Gain
Select switch (#5) is out. When active, this con-
trol adjusts the amount of compression and dis-
tortion from the amplifier. At far left, the sound
will have a thick compressed quality. As you turn
the control to the right the amount of distortion
increases. Gain 1 produces less intense distor-
tion than Gain 2.
CLEAN CHANNEL: A normal gain channel
designed to give you crystal clear sounds.
10: LEVEL: Use this control to adjust the output
3: GAIN 2: Gain 2 is active only when the Gain
Select switch (#5) is depressed. When active,
this control adjusts the amount of compression
and distortion from the amplifier. At far left, the
sound will have a thick compressed quality. As
you turn the control to the right the amount of
distortion increases. Gain 2 produces more
intense distortion than Gain 1 .
level of the Clean Channel.
11: LOW: Use this control to adjust the low fre-
quency output level of the Clean channel. This
control provides a range of 22dB at 80Hz.
12: MID: Use this control to adjust the mid fre-
quency output level of the Clean channel. This
control provides a range of 14dB at 600Hz.
13: HIGH: Use this control to adjust the high fre-
quency output level of the Clean channel. This
control provides a range of 28dB at 10kHz.
4: SHAPE: Working in conjunction with the Gain
2 control, rotate the Shape control until you find
the sound you’re looking for. Rotating the control
counter-clockwise enhances the mid frequen-
cies; rotating it clockwise enhances the low and
high frequencies. (This control is only effective
when Gain 2 is selected.)
14: REVERB LEVEL: Use this control to adjust
the amount of reverberation. In the full counter-
clockwise position the output signal is “dry” (no
reverb); rotating the control clockwise increases
the amount of reverb. The reverb can be turned
on and off by means of a footswitch (see #22).
5: GAIN SELECT: Use this switch to select Gain
1 (switch out) or Gain 2 (switch depressed). A
footswitch (#21) overrides this switch.
15: INSERT: Use this jack to connect an exter-
nal effects device to the amplifier. Use a stereo
1/4” male Y-cord: ring = send, tip = return, sleeve
= ground. See the illustration on the panel to the
right for more information.
6: LOW: Use this control to adjust the low fre-
quency output level of the Overdrive channel.
This control provides a range of 11dB at 80Hz.
7: HIGH: Use this control to adjust the high fre-
quency output level of the Overdrive channel.
This control provides a range of 10dB at 10kHz.
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GX-212 Amplifier
16: EXT. SPEAKER: Use this jack to connect an
extension speaker cabinet to the amplifier. This
jack is wired in series with the internal speaker(s).
Connecting to the Insert jack:
The Insert jack (#15) lets you patch external
effects into the amplifier just 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 2 1/4” mono signal
cables to connect to the effect as shown in the
illustration below.
WARNING: Do not attempt to use head-
phones in the Speaker jack! Permanent
hearing damage could result!
17: POWER ON LED: This LED illuminates
when the amplifier is turned on.
18: POWER SWITCH: Use this switch to turn
the amplifier on (top of the switch depressed)
and off (bottom of the switch depressed).
Stereo-to-mono Y-cord:
Y-adapter and 2 cables:
19. POWER CORD (rear panel, not shown):
The grounded power cord should only be
plugged into a grounded power outlet that meets
all applicable electrical codes and is compatible
with the voltage, power, and frequency require-
ments stated on the rear panel. Do not attempt
to defeat the safety ground connection.
TIP
RING
SLEEVE
RETURN
TIP
to Insert
jack
to Insert
jack
SEND
RING
GROUND
SLEEVE
(STP201, 3'
STP202, 6'
STP203, 9')
(YPP117)
20: FUSE (rear panel, not shown): This pro-
tects the amplifier against damages caused
from a faulty AC power source or other prob-
lems. If the fuse blows, replace it ONLY with the
same size and type fuse. If the fuse blows
repeatedly check the AC source; if it’s okay, con-
tact your Crate dealer for service information.
(1/4"-TO-1/4"
MONO CABLES)
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 Overdrive channels and between
Gain 1 and 2 of the Overdrive channel.
to
to
effect
"IN"
to
to
effect
"IN"
effect
"OUT"
jack
effect
"OUT"
jack
jack
jack
External Effect
External Effect
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 reverb on and off.
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GX-212 Amplifier
SUGGESTED STARTING SETTINGS:
CLEAN:
OUT
BLUES:
OUT
IN
RHYTHM:
OUT
IN
LEAD:
IN
IN
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GX-212 Amplifier
SYSTEM BLOCK DIAGRAM:
CLEAN
CHANNEL
BUFFER
INPUT
CHANNEL
SELECT
VOLUME LOW MID HIGH
EQ
SHAPE
ACTIVE
OVERDRIVE
CHANNEL
GAIN 1
GAIN 2
LOW HIGH LEVEL
GAIN
SHAPE
SELECT
MIX
AMP
INSERT
REVERB
LEVEL
POWER
AMP
SPEAKER
DAMPING
CIRCUIT
EXT.
SPEAKER
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GX-212 Amplifier
GX-212 TECHNICAL SPECIFICATIONS
Output Power Rating
115 watts RMS @ 5% THD 4 ohms load 120VAC
Speaker Size and Rating
Input Impedance
(2) Crate Custom 12”, 8 ohms
470k ohms
Maximum Input Signal Level Accepted
Total System Gain
7 volts, peak-to-peak
Overdrive Channel: 110dB all controls @10, Gain 2; 88dB Gain 1
Clean Channel: 58dB all controls @10
Overdrive Channel:
Clean Channel:
Low Control:
Shape Control:
High Control:
11dB Range @ 80Hz
Proprietary Circuit
10dB Range @ 10kHz
Low Control:
Mid Control:
High Control:
22dB Range @ 80Hz
14dB Range @ 600Hz
28dB Range @ 10kHz
Input Power Requirements
120 VAC, 60Hz, 95VA
100/115VAC, 50/60Hz, 95VA
230VAC, 50/60Hz, 95VA
Cabinet Size and Weight:
21” H x 26-1/2” W x 11” D, 50 lbs.
The GX-212 is covered with a durable black Tolex material: wipe it
clean with a lint-free cloth. Never spray cleaning agents onto the
cabinet. Avoid abrasive cleansers which could damage the finish.
Declaration Of Conformity
#30, Effective 01-01-2001
Manufacturer’s Name:
Production Facility:
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
Production Facility:
Shipping Facility:
Office Facility:
Product Type:
Audio Amplifier
Complies with Standards:
LVD:
Safety:
EMC:
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
Crate continually develops new products, as well as improves existing ones. For this reason, the
specifications and information in this Crate manual are subject to change without notice.
©2001 SLM ELECTRONICS, A DIVISION OF ST. LOUIS MUSIC, 1400 FERGUSON, ST. LOUIS, MO. U.S.A. 63133
P/N 18-160-03 • 05/02
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