Owner’s Manual
for the
GX-900H
GX-2200H
Guitar Amplifiers
by
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GX-900H/GX-2200H Guitar Amplifiers
by
Introduction:
Crate’s new GX-900H and GX-2200H are feature-packed, professional-strength powerhouses which can
deliver incredible sounds and outrageous volume levels. Rugged construction, reliable American craftsman-
ship and two solid state channels of pure, guitar power are some of trademarks the these new amplifiers:
amplifiers good enough to wear the Excalibur badge.
The clean channel is smooth and pure, even at high volume levels. The distortion channel offers a wide
range of sounds from slightly crunched to screaming mad, with two separate gain controls – it’s like getting a
third channel free. Both channels feature separate reverb level controls and three bands of equalization for
total tone control. The clean channel also sports a bright switch for added flexibility. The front-panel
footswitch offers “remote control” of channel selection and the dual gain controls, and the rear-panel effects
loop allows connection of your favorite effects with minimum noise and maximum performance.
The GX-900H is capable of pumping 90 watts of sonic bliss into loads as low as 2 ohms; the GX-2200H,
220 watts into 2 ohms. Be warned: Crate’s Excalibur amplifiers are about as serious a weapon as you can
wield.
Features:
Here’s a quick overview of some of the GX-900H/GX-2200H’s features and controls. Additional information
can be found on the pages indicated.
• Solid state circuitry for reliable service and incredible tones.
• Two completely separate channels with independent level, tone and reverb controls (page 4).
• Two gain controls for the distortion channel, accessible by a front-panel switch or footswitch (page 4).
(Consider it a “bonus” channel: three channels for the price of two!)
• Footswitch control for channel selection and the distortion channel’s dual gains by using a two-button
footswitch (such as Crate’s CFP-2) (page 4).
• Effects loop for noiseless use of your favorite processors and effects (page 5).
• Durable black Tolex covering and silver-colored logo and hardware for high cosmetic appeal and stage
presence.
• Musician made in the U.S.A.
• Crate’s available, exclusive 5-year warranty (U.S. only - see your dealer in other areas for warranty
details). Activate it by returning the enclosed survey card!
3
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GX-900H/GX-2200H Guitar Amplifiers
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The Front Panel:
18
17
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2
1
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Footswitch
Channel B Channel A
Level
High
Mid
Low
Level
High
Mid
Low
Gain Two
Gain One
Input
1. INPUT: Accepts the mono 1/4” plug 6. MID: Sets the level of the middle fre- 14. BRIGHT: Boosts the upper frequen-
of the signal cable from your guitar or quencies for the distortion channel. cies when pressed in. Adds a brightness
wireless receiver.
Offers a range of 10 dB at 1 kHz.
to the sound. Off in the out position.
CHANNEL A, the distortion channel: 7. HIGH: Sets the level of the upper fre- 15. REVERB, CHANNEL A: Sets the
2. GAIN ONE: Sets the signal gain for quencies for the distortion channel. amount of reverb effect applied to chan-
the distortion channel, thus controlling Offers a range of 17 dB at 6 kHz
the amount of distortion. Serves as the
nel A. Turned all the way to the left (“0”)
the signal is “dry” (no reverb). Turning it
towards the right increases the wetness
(amount of reverb) of the signal.
8. LEVEL: Controls the overall volume
“low to medium distortion control;”
level for the distortion channel.
accessible through the gain select switch
(#3) or a footswitch. Gives you sounds
from nearly clean to really crunchy.
9. CHANNEL SELECT: Switches be-
tween the clean channel (switch out,
LED on) and the distortion channel
16. REVERB, CHANNEL B: Sets the
amount of reverb effect applied to chan-
nel B. Turned all the way to the left (“0”)
the signal is “dry” (no reverb). Turning it
towards the right increases the wetness
(amount of reverb) of the signal.
3. GAIN SELECT: Switches between
(switch in, LED off). When a footswitch is
the two gain controls (#2, 4). Switch in,
used, this switch doesn’t do anything.
gain two is selected (gain one is disabled)
– both LEDs light. Switch out, gain one
is selected – only the LED under the
word “one” lights. When a footswitch is
CHANNEL B, the clean channel:
10. LOW: Sets the level of the lower fre-
quencies for the clean channel. Offers a
17. FOOTSWITCH: Accepts the stereo
1/4” plug from a two-button footswitch
(such as Crate’s CFP-2) for remote chan-
nel switching and switching between gain
one and gain two on channel A. Ring
controls channel selection, tip controls
the gains. With a footswitch plugged in,
the front-panel switches #3 and #9 don’t
do anything.
used, this switch doesn’t do anything,
range of 25 dB at 70 Hz. Lets you fatten
but the LEDs work the same.
up the bottom end of your sound.
4. GAIN TWO: Also sets the gain for the
11. MID: Sets the level of the middle
distortion channel. Serves as the “low to
frequencies for the clean channel. Offers
high distortion control,” also accessible
a range of 14 dB at 800 Hz. Lets you
through the gain select switch (#3) or a
create sounds from “in the distance” to
footswitch. Gives you sounds from near-
“in your face.”
ly clean to screaming dirty. Acts as a third
18. POWER: (not shown): Turns the
amp on and off, “on” being the UP posi-
tion. The ON LED next to the Excalibur
logo lights when the amp is turned on.
12. HIGH: Sets the level of the upper
frequencies for the clean channel. Offers
a range of 29 dB at 10 kHz. Lets you
add brilliance and crystal clear highs to
your sound.
channel: set gain one for a rhythm
crunch, set gain two for screaming leads.
Be more creative, more expressive;
have more fun!
5. LOW: Sets the level of the lower fre-
quencies for the distortion channel.
Offers a range of 18 dB at 100 Hz.
13. LEVEL: Controls the overall volume
level for the clean channel.
4
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GX-900H/GX-2200H Guitar Amplifiers
by
The Rear Panel:
19 20
21
22
19. EFFECTS LOOP LINE OUT: 21. SPEAKERS: Connects the amp to 22. POWERCORD: Connects the amp
Sends a signal out to your effects devices your speaker cabinet(s). Uses speaker to a grounded AC power outlet. Use
or signal processors. Lets you add cables with mono 1/4” plugs. These only a grounded outlet! DO NOT
effects, with lowest noise. Uses a shield- jacks are wired in parallel. Make sure that defeat the ground prong of the cord! If
ed signal cable with mono 1/4” plugs. your speaker combination never totals the amplifier is used outside of the
Also doubles as a source for a post-EQ, less than 2 ohms! Use the chart below to United States, see the area’s Crate deal-
pre-amp signal to send your signal to a help determine parallel loads. If in doubt, er for the proper power cord or consult a
mixing board, recorder, powered moni- ask your dealer.
tor or external amplifier.
local professional electrician.
CAB IMP # CABS TOTAL IMP
20. EFFECTS LOOP LINE IN: Re-
ceives the signal from your effects or
processors. Uses a shielded cable with
mono 1/4” plugs. Also doubles as a
direct feed to the power amp section,
bypassing the input and preamp stages.
Useful for “slaving” a pair of amps
together.
4 ohms
8 ohms
8 ohms
16 ohms
16 ohms
16 ohms
2
2
4
2
4
8
2 ohms
4 ohms
2 ohms
8 ohms
4 ohms
2 ohms
5
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GX-900H/GX-2200H Guitar Amplifiers
by
Please Note: These settings were obtained by the help of several gutiarists without earplugs, using both
“Strat-style” and “Les Paul-style” guitars. The amp was connected to a single 4-12 slant front cabinet.
Some Suggested Settings:
These are only suggestions and should be used as starting points to help you find the sounds you need.
“Glass should be this clean!”
“Go wash your hands.” (dirty blues)
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5
5
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1
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1
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1
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1
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1
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3
7
2
8 2
8
2
8 2
8 2
8 2
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2
8 2
8 2
8 2
8 2
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1
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OUT
OUT
10
10
10
10
10
10
10
10
10
10
0
10
10
Channel B Channel A
Level
High
Mid
Low
Level
High
Mid
Low
Gain Two
Gain One
“Wipe your feet!” (jazzy clean)
“You need a bath!” (grungy)
5
5
5
5
5
5
5
5
5
5
5
5
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0
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1
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1
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1
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1
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9
3
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3
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8 2
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2
8 2
8 2
8 2
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8 2
8 2
8 2
8 2
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1
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AS
NEEDED
IN
10
10
10
10
10
10
10
10
10
10
10
10
Channel B Channel A
Level
High
Mid
Low
Level
High
Mid
Low
Gain Two
Gain One
The gray lines show what worked best for
us with a Les Paul style guitar; the black
lines worked best with a Strat-style guitar.
“Led-Aero-Black Sab-Drix” (classic hard rock)
5
5
5
5
5
5
5
5
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3
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8 2
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2
8 2
8 2
8 2
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2
8 2
8 2
8 2
8 2
8
2
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1
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1
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1
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1
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OUT
10
10
10
10
10
10
10
10
10
10
0
10
0
10
Channel B Channel A
Level
High
Mid
Low
Level
High
Mid
Low
Gain Two
Gain One
“Shred it don’t forget it.” (heavy metal)
5
5
5
5
5
5
5
5
5
5
5
5
4
0
6
4
0
6
4
0
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4
0
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0
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0
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0
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0
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0
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4
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0
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3
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1
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3
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9
3
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3
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3
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3
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3
1
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3
1
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1
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1
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3
7
2
8 2
8
2
8 2
8 2
8 2
8
2
8 2
8 2
8 2
8 2
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1
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1
1
1
1
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1
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1
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IN
10
10
10
Level
10
High
10
Mid
10
Low
10
10
10
10
0
10
10
Channel B Channel A
Level
High
Mid
Low
Gain Two
Gain One
“Meet me in the Pit!” (moshin’)
5
5
5
5
5
5
5
5
5
5
5
5
4
0
6
4
0
6
4
0
6
4
0
6
4
0
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4
0
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4
0
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0
6
4
0
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4
0
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4
6
4
0
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3
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3
1
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3
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3
1
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3
1
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3
1
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3
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3
1
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3
1
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3
1
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3
1
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3
7
2
8 2
8
2
8 2
8 2
8 2
8
2
8 2
8 2
8 2
8 2
8
2
8
1
9
9
1
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9
9
9
1
9
9
9
9
9
1
9
IN
10
10
10
10
10
10
10
10
10
10
0
10
10
Channel B Channel A
Level
High
Mid
Low
Level
High
Mid
Low
Gain Two
Gain One
6
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GX-900H/GX-2200H Guitar Amplifiers
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System Block Diagram:
GAIN
ONE
CHANNEL A
GAIN
SELECT
EQ
GAIN
TWO
CHANNEL
SELECT
INPUT
LOW
HIGH
MID
INPUT
BUFFER
LEVEL
EQ
LOW
HIGH
BRIGHT
CHANNEL B
MID
EFFECTS
SEND
EFFECTS
RETURN
POWER
AMP
SPEAKER
OUTPUT
REVERB
SEND
REVERB
CH.A
SPEAKER
OUTPUT
REVERB
PAN
REVERB
CH.B
7
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GX-900H/GX-2200H Guitar Amplifiers
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Technical Specifications:
Maximum Input Signal Level Accepted 8 volts peak to peak
Input Power Requirements
GX-900H: 120VAC, 60Hz, 240 watts max.
GX-2200H: 120VAC, 60Hz, 500 watts max.
Input Impedance
470 k ohms
Total System Gain
Channel B: 54 dB @ 1 kHz, all controls at “10”, Bright off
Channel A: Gain One: 69 dB @ 1 kHz, all controls at “10”
Gain Two: 86 dB @ 1 kHz, all controls at “10”
Output Power Rating
Channel B
GX-900H: 90 watts RMS @ 5% THD, 2 ohm load
GX-2200H: 220 watts RMS @ 5% THD, 2 ohm load
Low
Mid
High
Bright
Low
25 dB range @ 70 Hz
14 dB range @ 800 Hz
29 dB range @ 10 kHz
7 dB boost @ 10 kHz
18 dB range @ 100 Hz
10 dB range @ 1 kHz
17 dB range @ 6 kHz
Channel A
Mid
High
Fuse Rating and Type
GX-900H:
GX-2200H:
2A Normal Blo, 250V Internal, 100VAC-120VAC; 1A Slo Blo, 250V Internal, 230 VAC
5A Normal Blo, 250V Internal, 100VAC-120VAC; 3A Normal Blo, 250V Internal, 230VAC
Cabinet Size and Weight:
11.63” H x 30.75” W x 11” D
35 lbs.
The GX-900H and GX-2200H are covered with a durable black Tolex material; wipe them clean with a damp lint-free cloth to remove dirt and road film.
Never spray cleaning agents directly onto the cabinets, and stay away from abrasive cleaners which could damage their finish.
GX-900H
GX-2200H
Guitar Amplifiers
by
CRATE continually develops new products, as well as improves existing ones. For this reason,
specifications and information in this manual are subject to change without notice.
CRATE/SLM ELECTRONICS, A DIVISION OF ST. LOUIS MUSIC, 1400 FERGUSON AVENUE, ST. LOUIS, MO 63133
47-590-01 • 07-95
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