Crate Amplifiers Musical Instrument Amplifier GFX 1200H User Manual

GFX-1200H  
GUITAR AMPLIFIER WITH  
DIGITAL SIGNAL PROCESSING  
OWNER’S MANUAL  
Congratulations!  
You are now the proud owner of the Crate GFX-1200H guitar amplifier. This rugged  
amp head combines outstanding features with serious clean and distorted sounds. An  
easy to operate DSP section lets you dial in a variety of digital effects such as delay,  
flange, chorus and reverb – with separate level control. Channel selection, Crate’s  
exclusive Shape circuit, and DSP on/off are controllable by the supplied three-button  
footswitch. An insert jack allows virtually noise-free connection of your favorite effects.  
Like all Crate products, your GFX-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  
 
GFX-1200H Amplifier  
11  
12  
13  
14  
15  
16  
17 18  
• Slapback delay  
• Long delay w/regeneration  
• Light Flange  
• Heavy Flange  
• Slow Chorus  
22: CHANNEL SELECT / GAIN FOOTSWITCH  
JACK (rear panel, not shown): Connect the  
stereo 1/4” plug of the supplied three-button  
footswitch here for remote control of the Channel  
Select and Gain Select settings.  
• Fast Chorus  
23: DSP FOOTSWITCH JACK (rear panel, not  
shown): Connect the mono 1/4” plug of the sup-  
plied three-button footswitch here for remote con-  
trol of the DSP on and off.  
• Chorus w/small room reverb  
• Chorus w/large room reverb  
• Small room reverb  
• Large room reverb  
16: INSERT: Connect an external effects device via  
this jack. Use a stereo 1/4” male Y-cord: ring =  
send, tip = return, sleeve = ground. See the illustra-  
tion on the panel to the right for more information.  
Connecting to the Insert jack:  
The Insert jack (#16) lets you patch external effects  
into the amplifier just prior to its power amp stage.  
Use Crate’s CYC6MS stereo-to-mono Y-cord or an  
adapter such as Crate’s CA11Y and 2 1/4” mono  
signal cables to connect to the effect as shown  
below.  
17: POWER ON LED: Lights when the amplifier is  
turned on.  
18: POWER SWITCH: Turns the amplifier ON in  
the up position, off in the down position.  
Stereo-to-mono Y-cord:  
Y-adapter and 2 cables:  
19. POWER CORD (rear panel, not shown): Your  
GFX-1200H is equipped with a heavy-duty ground-  
ed three-wire power cord. Be sure this cord is prop-  
erly plugged into a safely wired grounded 120 volt,  
60Hz AC power outlet before use. (If your GFX-  
1200H was purchased outside the United States,  
refer to the rear panel for power ratings.) For your  
safety, never attempt to defeat the ground connec-  
tion on this cord.  
TIP  
RING  
SLEEVE  
RETURN  
TIP  
to Insert  
jack  
to Insert  
jack  
SEND  
RING  
GROUND  
SLEEVE  
(STP201, 3'  
STP202, 6'  
STP203, 9')  
(YPP117)  
20: SPEAKER JACKS (rear panel, not shown):  
Use these 1/4” output jacks to connect the amplifi-  
er to your speaker cabinet(s). Use heavy gauge  
speaker cables. The GFX-1200H can operate into  
speaker loads as low as 4 ohms.  
(1/4"-TO-1/4"  
MONO SHIELDED  
CABLES)  
to  
21: FUSE (rear panel, not shown): Protects the  
amplifier against damages caused from a faulty AC  
power source or other problems. If the fuse blows,  
replace it ONLY with the same size and type fuse.  
If the fuse blows repeatedly check the AC source; if  
it’s okay, contact your Crate dealer for service infor-  
mation.  
to  
to  
effect  
"IN"  
to  
effect  
"IN"  
effect  
"OUT"  
jack  
effect  
"OUT"  
jack  
jack  
jack  
External Effect  
External Effect  
 
GFX-1200H Amplifier  
GFX-1200H TECHNICAL SPECIFICATIONS  
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  
Total System Gain  
8 volts, peak-to-peak  
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:  
Shape Control:  
High Control:  
11dB Range @ 80Hz  
Proprietary Circuit  
10dB Range @ 10kHz  
Clean Channel:  
Low Control:  
Mid Control:  
High Control:  
22dB Range @ 80Hz  
14dB Range @ 600Hz  
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 GFX-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.  
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  
VORSICHT: ZUR MINIMIERUNG ELEKTRISCHER SCHLAGGEFAHR NICHT  
DEN DECKEL ABENHMEN. INTERNE TEILE KONNEN NICHT VOM  
BENUTZER GEWARTET WERDEN. DIE WARTUNG IS QUALIFIZIERTEM  
WARTUNGSPERSONAL ZU UBERLASSEN.  
ENLEVER LE COUVERCLE. AUCUNE PIECE INTERNE N'EST REPRABLE  
NO USER-SERVICEABLE PARTS INSIDE.  
PAR L'UTILISATEUR. POUR TOUTE REPARATION, S'ADRESSER  
TECHNICIEN QUALIFIE.  
A
UN  
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.  
©1998 SLM ELECTRONICS, A DIVISION OF ST. LOUIS MUSIC, 1400 FERGUSON, ST. LOUIS, MO. 63133  
P/N 47-477-03 • 08/98  
 

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