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OWNER'S MANUAL
Congratulations!
You are now the proud owner of the Crate GX-1200H guitar amplifier. This rugged
amp head combines outstanding features with serious clean and distorted sounds.
Channel selection and Crate's exclusive Shape circuit are controllable by the supplied
two-button footswitch. An insert jack allows virtually noise-free connection of your
favorite effects.
Like all Crate products, your GX-1200H is Musician Made in the U.S.A., using only
the best components. Extensive testing at the hands (and ears) of skilled technicians
and musicians insures 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
GX-1200H
GUITAR AMPLIFIER


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1: INPUT: Connect your guitar here using a
shielded instrument cable.
OVERDRIVE CHANNEL: A high gain channel
giving you sounds from a slight edge to serious
overdrive.
2: GAIN 1: When active, sets 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 1 produces
less intense distortion than Gain 2 and is active
only when the Gain Select switch (#5) is out.
3: GAIN 2: When active, sets 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 and is active
only when the Gain Select switch (#5) is in.
4: SHAPE: Working in conjunction with the Gain
2 control, rotate the Shape control until you find
the sound you're looking for. Turning the control
towards the left enhances the mid frequencies;
turning it to the right enhances the low and high
frequencies. (Only affects Gain 2 when active.)
5: GAIN SELECT: Switches between Gain 1
(out) and Gain 2 (in). A footswitch (#16) over-
rides this switch.
6: LOW: Adjusts the low frequency output level:
to the left reduces the low frequency output; to
the right increases it. This control allows a range
of 11dB at 80Hz.
7: HIGH: Adjusts the high frequency output
level: to the left reduces the high frequency out-
put, to the right increases it. This control allows
a range of 10dB at 10kHz.
8: LEVEL: Sets the output volume level from the
Overdrive Channel: in the far-left position there
is no output; turning the control to the right
increases the output. Use this control along with
the Gain and Shape controls (#2, 3 & 4) to cre-
ate a wide variety of sounds.
9: CHANNEL SELECT: When this switch is
pressed in the Overdrive Channel is engaged.
The Clean Channel is selected when this switch
is out. A footswitch (#16) overrides this switch.
The adjacent LEDs indicate which channel is
selected.
CLEAN CHANNEL: A normal gain channel
designed to give you crystal clear sounds.
10: LEVEL: Sets the output volume level from
the Clean Channel: in the far-left position there
is no output; turning the control to the right
increases the output level.
11: LOW: Adjusts the low frequency output
level: to the left reduces the low frequency out-
put; to the right increases it. This control allows
a range of 22dB at 80Hz.
12: MID: Adjusts the mid frequency output level:
to the left reduces the midrange output; turning
it to the right increases it. This control allows a
range of 14dB at 600Hz.
13: HIGH: Adjusts the high frequency output
level: to the left reduces the high frequency out-
put; to the right increases it. This control allows
a range of 28dB at 10kHz.
14: REVERB LEVEL: Adjust the amount of
reverberation with this control: in the full-left
position the output signal is "dry" (no reverb);
rotating the control to the right increases the
amount of reverb.
GX-1200H Amplifier
1
2
3
4
6
7
8
10
5
9


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GX-1200H Amplifier
1: INPUT: Connect your guitar here using a
shielded instrument cable.
OVERDRIVE CHANNEL: A high gain channel
giving you sounds from a slight edge to serious
overdrive.
2: GAIN 1: When active, sets 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 1 produces
less intense distortion than Gain 2 and is active
only when the Gain Select switch (#5) is out.
3: GAIN 2: When active, sets 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 and is active
only when the Gain Select switch (#5) is in.
4: SHAPE: Working in conjunction with the Gain
2 control, rotate the Shape control until you find
the sound you're looking for. Turning the control
towards the left enhances the mid frequencies;
turning it to the right enhances the low and high
frequencies. (Only affects Gain 2 when active.)
5: GAIN SELECT: Switches between Gain 1
(out) and Gain 2 (in). A footswitch (#16) over-
rides this switch.
6: LOW: Adjusts the low frequency output level:
to the left reduces the low frequency output; to
the right increases it. This control allows a range
of 11dB at 80Hz.
7: HIGH: Adjusts the high frequency output
level: to the left reduces the high frequency out-
put, to the right increases it. This control allows
a range of 10dB at 10kHz.
8: LEVEL: Sets the output volume level from the
Overdrive Channel: in the far-left position there
is no output; turning the control to the right
increases the output. Use this control along with
the Gain and Shape controls (#2, 3 & 4) to cre-
ate a wide variety of sounds.
9: CHANNEL SELECT: When this switch is
pressed in the Overdrive Channel is engaged.
The Clean Channel is selected when this switch
is out. A footswitch (#16) overrides this switch.
TIP
RING
SLEEVE
RETURN
SEND
GROUND
Stereo-to-mono Y-cord:
to Insert jack
(CYC6MS)
(CA11Y)
"Send"
plug:
to
effect
"IN"
"Return"
plug:
from
effect
"OUT"
External Effect
TIP
RING
SLEEVE
Y-adapter and 2 cables:
to Insert jack
to
effect
"IN"
from
effect
"OUT"
Tip =
"Return"
Ring =
"Send"
External Effect
11
12
13
14
15
16 17
18


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©1997 SLM ELECTRONICS, A DIVISION OF ST. LOUIS MUSIC, 1400 FERGUSON, ST. LOUIS, MO. 63133
P/N 47-477-02 · 01/98
GX-1200H Amplifier
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.
Output Power Rating
70 watts RMS @ 5% THD 8 ohms load 120VAC
100 watts RMS @ 5% THD 4 ohms load 120VAC
Maximum Input Signal Level Accepted
8 volts, peak-to-peak
Total System Gain
Overdrive Channel: 110dB all controls @10, Gain 2; 88dB Gain 1
Clean Channel: 58dB all controls @10
Input Impedance
470k ohms
Overdrive Channel:
Low Control:
11dB Range @ 80Hz
Shape Control:
Proprietary Circuit
High Control:
10dB Range @ 10kHz
Clean Channel:
Low Control:
22dB Range @ 80Hz
Mid Control:
14dB Range @ 600Hz
High Control:
28dB Range @ 10kHz
Input Power Requirements
120 VAC, 60Hz, 230VA
100/115VAC, 50/60Hz, 230VA
230VAC, 50/60Hz, 230VA
Cabinet Size and Weight:
9-3/8" H x 19-3/4" W x 9-1/2" D, 25 lbs.
The GX-1200H 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.
GX-1200H TECHNICAL SPECIFICATIONS
THIS EQUIPMENT HAS BEEN DESIGNED AND ENGINEERED TO PROVIDE SAFE AND RELIABLE OPERATION. IN ORDER TO PROLONG THE LIFE OF THE
UNIT AND PREVENT ACCIDENTAL DAMAGES OR INJURY, PLEASE FOLLOW THESE PRECAUTIONARY GUIDELINES:
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT OPEN CHASSIS; DO NOT DEFEAT OR REMOVE THE GROUND PIN OF THE POWER
CORD; CONNECT ONLY TO A PROPERLY GROUNDED AC POWER OUTLET.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
CAUTION: NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
CAUTION: 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.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER.
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
"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"
"UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN"
EXPLANATION OF GRAPHICAL SYMBOLS:
EXPLICACION DE SIMBOLOS GRAFICOS:
EXPLICATION DES SYMBÔLES GRAPHIQUES:
"DANGEROUS VOLTAGE"
"VOLTAJE PELIGROSO"
"DANGER HAUTE TENSION"
"GEFAHLICHE SPANNUNG"
=
=
ATTENTION
RISQUE D'ELECTROCUTION
NE PAS OUVRIR
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.
VORSICHT
ELEKTRISCHE SCHLAGGEFAHR
NICHT OFFENEN
VORSICHT: ZUR MINIMIERUNG ELEKTRISCHER SCHLAGGEFAHR NICHT
DEN DECKEL ABENHMEN. INTERNE TEILE KONNEN NICHT VOM
BENUTZER GEWARTET WERDEN. DIE WARTUNG IS QUALIFIZIERTEM
WARTUNGSPERSONAL ZU UBERLASSEN.