Crate Amplifiers Stereo Amplifier GX 140CH User Manual

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  
 
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 1/4speaker jacks are not acceptable  
for use on amplifiers capable of high output power  
levels. For this reason the 1/4speaker 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.  
 
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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