GX-40M GUITAR AMPLIFIER
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GAIN
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LEVEL
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HIGH
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RATE
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MID
REVERB
DEPTH
FOOTSWITCH
POWER
OWNER’S MANUAL
Congratulations!
You are now the proud owner of the compact but powerful Crate GX-40M amplifier.
Featuring a “Clean” channel with a 3-band EQ and Level control, and an “Overdrive”
channel with our patented “Flex-Wave” circuitry with Gain, Level and Crate’s Shape
control, plus Chorus and Reverb, The GX-40M offers you more flexibility and perform-
ance than any amp in its class. A special damping circuit simulates the “current source”
type of output of a tube amp, giving you solid state reliability combined with classic tube
sounds.
Like all Crate products, your GX-40M 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-40M Amplifier
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CHORUS
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right increases the midrange output. chorus, sleeve = ground.)
The Mid control allows for 19dB of
boost or cut at 900Hz.
15: HEADPHONES: For private prac-
tice sessions, plug a pair of stereo
9: HIGH: Adjust the high frequency headphones into this jack. The inter-
output level with this control: in the nal speaker is disconnected whenev-
center position the high frequency er headphones are being used.
output will be “flat” (no boost or cut).
Turning the control to the left reduces
the high frequency output; turning it to
the right increases the high frequency
output. The High control allows a total
range of 23dB of boost or cut at 5kHz.
16: EXTERNAL SPEAKER: You may
connect the GX-40M to an external
speaker with a rated impedance of at
least 4 ohms using this jack. The
internal speaker is disconnected
whenever an external speaker is
10: REVERB: Adjust the amount of used.
Reverb effect with this control: in its
WARNING: DO NOT attempt to use head-
phones in the Speaker jack! Permanent
hearing damage could result!
full-left position the signal will be “dry”
(without any reverb). As you turn the
control to the right the amount of
reverberation increases.
17: ON LED: The word “ON” will glow
11: CHORUS ON: To activate the when you turn on the GX-40M, show-
Chorus effect, press this switch in. ing you that the amplifier is activated
(This switch is disabled when a and ready to play.
footswitch is plugged in – see #14)
18: POWER: This heavy-duty rocker-
12: DEPTH: Adjust the overall type switch is used to turn the amplifi-
amount of chorus with this control: to er ON in the up position, off in the
the left for slow, smooth “phasing” down position. The ON LED (#17)
sounds, to the right for faster “vibrato” works with this switch as a visual indi-
sounds.
cator.
13: RATE: Adjust the speed of the 19: POWER CORD: (Rear panel, not
chorus effect with this control: to the shown: This heavy-duty, grounded,
left for a little effect, to the right for a three-wire power cord is to be
lot.
plugged into ONLY a safely-wired,
grounded 120 volt, 60 cycle AC power
outlet. DO NOT attempt to defeat the
ground connection of this cable!
14: FOOTSWITCH: Plug a dual
footswitch (such as the Crate CFP-2)
here to control channel selection and
chorus on/off. (Tip = channels, ring =
GX-40M Amplifier
GX-40M TECHNICAL SPECIFICATIONS:
Output Power Rating
>30 watts RMS @ 5% THD 4 ohms, 120 VAC
Gain, Overdrive Channel
Gain, Clean Channel
86 +/-6dB @ 1kHz
46 +/-6dB @ 1kHz
Tone Control Range. Low
Tone Control Range, Mid
Tone Control Range, High
25dB @ 80Hz
19dB @ 900Hz
23dB @ 5kHz
Signal To Noise, Overdrive Channel
Signal To Noise, Clean Channel
>50dB
>65dB
Maximum Signal Accepted
Internal Speaker
>1.2 volts RMS min. @ 400Hz
12” Crate Custom Design 4 ohm
120 VAC, 60Hz, 50 watts max.
Power Requirements
Size and Weight
17.5” H x 18” W x 10” D, 19 lbs.
445mm H x 457mm W x 254mm D, 8.6kg.
SYSTEM BLOCK DIAGRAM:
REVERB
POWER
"CLEAN"
OVERDRIVE
SELECT
BUFFER
AMP
INPUT
EXT.
SPEAKER
ON
DAMPING
LEVEL LOW MID HIGH
FLEX WAVE
CHORUS
SPEAKER
PHONES
STAGE
"OVERDRIVE"
DEPTH RATE
ATTENUATOR
GAIN SHAPE LEVEL
The GX-40M 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.
CAUTION
ATTENTION
VORSICHT
RISK OF ELECTRIC SHOCK
DO NOT OPEN
RISQUE D'ELECTROCUTION
NE PAS OUVRIR
ELEKTRISCHE SCHLAGGEFAHR
NICHT OFFENEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER.
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: ZUR MINIMIERUNG ELEKTRISCHER SCHLAGGEFAHR NICHT
DEN DECKEL ABENHMEN. INTERNE TEILE KONNEN NICHT VOM
BENUTZER GEWARTET WERDEN. DIE WARTUNG IS QUALIFIZIERTEM
WARTUNGSPERSONAL ZU UBERLASSEN.
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
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.
EXPLANATION OF GRAPHICAL SYMBOLS:
EXPLICACION DE SIMBOLOS GRAFICOS:
EXPLICATION DES SYMBÔLES GRAPHIQUES:
"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"
"DANGEROUS VOLTAGE"
“VOLTAJE PELIGROSO”
"DANGER HAUTE TENSION"
"GEFAHLICHE SPANNUNG"
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"UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN"
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.
©1996 SLM ELECTRONICS, A DIVISION OF ST. LOUIS MUSIC, 1400 FERGUSON, ST. LOUIS, MO. 63133
P/N 47-421-02 • 04/96
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