GX-140C / CH
STEREO CHORUS AMPLIFIER
OWNER’S MANUAL
Congratulations!
You are now the proud owner of the versatile and powerful Crate GX-140C
Combo Amplifier / GX-140CH Amp Head with Stereo Chorus. With two flexible
channels, Crate’s patented “Flex Wave” distortion circuitry, a Stereo Effects Loop
and three footswitchable functions, the GX-140C/CH offers you more flexibility
and performance than any amplifier in its class.
Like all Crate products, your GX-140C/CH 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
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GX-140C/CH Amplifier
22
23
24
25
26
27
28
29
REAR PANEL:
22: AC LINE IN: This heavy-duty, grounded, three-wire 28: CHANNEL/GAIN SELECT FOOTSWITCH: Plug a
power cord is to be plugged into ONLY a safely-wired, dual footswitch (such as the Crate CFP-2 or the “stereo”
grounded 120 volt, 60 cycle AC power outlet. DO NOT plug of the Crate CFP-3) here to control Channel Selection
attempt to defeat the ground connection of this cable! If and the Gain Select button. The footswitch overrides the
your GX-140C/CH was purchased outside of the United front panel switches (#5 and 9) and is wired as follows:
States, see the unit’s rear panel for its power rating and fol- Ring = Gain Select, tip = Channels, sleeve = ground.
low the above guidelines.
29: CHORUS/EXPANDER FOOTSWITCH: Plug a single
23,24: POWER AMP 1, 2 SPEAKERS: You may connect footswitch (such as the Crate CFP-1 or the “mono” plug of
the outputs of the GX-140C/CH to your external speakers the Crate CFP-3) here to control the Chorus/Expander.
using these jacks. When connecting speakers use a The footswitch overrides the front panel on/off switch
matched pair; that is, two speakers with the same imped- (#17); selection between the Chorus and the Expander is
ance to insure optimum performance from the amplifier. still controlled by the front panel selector switch (#18).
The amp 2 speaker jack (#24) carries the chorus signal
(when the chorus is on) while the amp 1 jack (#23) is “dry”
(without the chorus effect).
NOTE: The total impedance for each side should not be
Connecting to the Insert jack:
less than 4 ohms.
The Insert jack (#16) 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 below.
WARNING: DO NOT attempt to use headphones in the
Speaker jacks! Permanent hearing damage could result!
Stereo-to-mono Y-cord:
Y-adapter and 2 cables:
IMPORTANT NOTE ABOUT CERTAIN EXPORT UNITS:
In some areas 1/4” speaker jacks are not acceptable
for use on amplifiers capable of high output power
levels. For this reason the 1/4” speaker jacks on your
amplifier may be sealed – in this case, use the
Speakon® jacks provided.
TIP
RING
SLEEVE
RETURN
TIP
to Insert
jack
to Insert
jack
SEND
RING
GROUND
SLEEVE
(STP201, 3'
STP202, 6'
STP203, 9')
(YPP117)
25: STEREO LINE IN: When using a stereo effects
deivce, connect its output here. This stereo 1/4” phone
jack is wired as follows: Ring = amp 1, tip = amp 2, sleeve
= ground.
26: STEREO LINE OUT: When using a stereo effects
deivce, connect this jack to its input. This stereo 1/4”
phone jack is wired as follows: Ring = output 1, tip = out-
put 2, sleeve = ground.
(1/4"-TO-1/4"
MONO SHIELDED
CABLES)
to
to
to
effect
"IN"
to
effect
"IN"
If your effects device has stereo input and output jacks,
use a pair of three-conductor stereo patch cords to con-
nect to it. If the device has separate left and right jacks, use
a pair of one-stereo-male to two-mono-female Y-adapters
to make the connections, as shown to the right.
effect
"OUT"
jack
effect
"OUT"
jack
jack
jack
External Effect
External Effect
Speakon is a registered trademark of Neutrik U.S.A.
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GX-140C/CH Amplifier
GX-140C/CH TECHNICAL SPECIFICATIONS
Output Power Rating
70 watts RMS @ 5% THD 8 ohms load 120VAC
100 watts RMS @ 5% THD 4 ohms load 120VAC
Speaker Size and Rating (GX-140C only)
Crate Custom Design 12” with 1-3/4” voice coil
Power Handling: 65 Watts RMS
Maximum Input Signal Level Accepted
Total System Gain
8 volts, peak-to-peak
Overdrive Channel: 108dB @ 1kHz
Clean Channel: 56dB @ 1kHz
Input Impedance
470k ohms
Overdrive Channel:
Low Control:
Shape Control:
High Control:
10dB Range @ 80Hz
Proprietary Circuit
10dB Range @ 7kHz
Clean Channel:
Low Control:
Mid Control:
High Control:
20dB Range @ 100Hz
14dB Range @ 700Hz
27dB Range @ 10kHz
Input Power Requirements
120 VAC, 60Hz, 230VA
100/115VAC, 50/60Hz, 230VA
230VAC, 50/60Hz, 230VA
Cabinet Size and Weight:
GX-140C:
20” H x 26-1/2” W x 11” D, 58 lbs.
GX-140CH:
12-1/2” H x 30-3/4” W x 10-1/2” D, 35 lbs.
The GX-140C/CH 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"
=
=
"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.
©2001 SLM ELECTRONICS, A DIVISION OF ST. LOUIS MUSIC, 1400 FERGUSON, ST. LOUIS, MO. 63133
P/N 47-474-01 • 05/01
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