Crate Amplifiers Musical Instrument Amplifier GX212 User Manual

GX-212 GUITAR  
AMPLIFIER  
OWNER’S MANUAL  
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GX-212 Amplifier  
TABLE OF CONTENTS:  
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3  
The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4,5  
Suggested Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . .6  
System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . .7  
Technical Specifications . . . . . . . . . . . . . . . . .back cover  
CAUTION  
PRECAUCION  
ATTENTION  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
RIESGO DE CORRIENTAZO  
NO ABRA  
RISQUE D'ELECTROCUTION  
NE PAS OUVRIR  
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC  
SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOIS-  
TURE. TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT  
REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE.  
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.  
PRECAUCION: PARA REDUCIR EL RIESGO DE INCENDIOS  
O
DESCARGAS  
LA  
ATTENTION: PROTÉGEZ CET APPAREIL DE LA PLUIE ET DE L'HUMIDITÉ  
AFIN D'ÉVITER TOUT RISQUE D'INCENDIE OU D'ÉLECTROCUTION. 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.  
ELECTRICAS, NO PERMITA QUE ESTE APARATO QUEDE EXPUESTO  
A
LLUVIA  
O
LA HUMEDAD. PARA DISMINUOIR EL RIESGO DE CORRIENTAZO.  
NO ABRA LA CUBIERTA. NO HAY PIEZAS ADENTRO QUE EL USARIO PUEDO  
REPARAR DEJE TODO MANTENIMIENTO A LOS TECHNICOS CALIFICADOS.  
IMPORTANT SAFETY INSTRUCTIONS  
READ, FOLLOW, HEED, AND KEEP ALL INSTRUCTIONS AND WARNINGS.  
DO NOT OPERATE NEAR ANY HEAT SOURCE AND DO NOT BLOCK ANY VENTILATION OPENINGS ON THIS APPARATUS. FOR  
PROPER OPERATION, THIS UNIT REQUIRES 3” (75mm) OF WELL VENTILATED SPACE AROUND HEATSINKS AND OTHER AIR  
FLOW PROVISIONS IN THE CABINET.  
DO NOT USE THIS APPARATUS NEAR SPLASHING, FALLING, SPRAYING, OR STANDING LIQUIDS.  
CLEAN ONLY WITH LINT-FREE DAMP CLOTH AND DO NOT USE CLEANING AGENTS.  
ONLY CONNECT POWER CORD TO A POLARIZED, SAFETY GROUNDED OUTLET WIRED TO CURRENT ELECTRICAL CODES AND  
COMPATIBLE WITH VOLTAGE, POWER, AND FREQUENCY REQUIREMENTS STATED ON THE REAR PANEL OF THE APPARATUS.  
PROTECT THE POWER CORD FROM DAMAGE DUE TO BEING WALKED ON, PINCHED, OR STRAINED.  
UNPLUG THE APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERIODS OF TIME.  
ONLY USE ATTACHMENTS, ACCESSORIES, STANDS, OR BRACKETS SPECIFIED BY THE MANUFACTURER FOR SAFE OPERA-  
TION AND TO AVOID INJURY.  
THIS APPARATUS DOES NOT OPERATE NORMALLY AND REQUIRES SERVICE WITH ANY PHYSICAL DAMAGE FROM IMPACT OR  
ANY EXPOSURE TO MOISTURE.  
SERVICE MUST BE PERFORMED BY QUALIFIED PERSONNEL.  
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 PRO-  
TECTION 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"  
=
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2
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GX-212 Amplifier  
Congratulations!  
You are now the proud owner of the Crate GX-212 guitar amplifi-  
er. These rugged amplifiers deliver serious clean and distorted  
sounds through two premium 12” Crate Custom speakers. Channel  
selection, Crate’s exclusive Shape circuit, and DSP on/off are con-  
trollable by the supplied three-button footswitch. An insert jack allows  
virtually noise-free connection of your favorite effects.  
Like all Crate products, your GX-212 is designed by musicians,  
and built using only the best components. Extensive testing ensures  
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  
3
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GX-212 Amplifier  
1: INPUT: Connect your guitar here by means of  
a shielded instrument cable.  
8: LEVEL: Use this control to adjust the output  
level of the Overdrive Channel. Use this control  
along with the Gain and Shape controls (#2, 3 &  
4) to create a wide variety of sounds.  
OVERDRIVE CHANNEL: A high gain channel  
giving you sounds from a slight edge to serious  
overdrive.  
9: CHANNEL SELECT: Use this switch to select  
the Clean channel (switch out) or the Overdrive  
channel (switch depressed). One of the triangu-  
lar LEDs beside the switch will illuminate to indi-  
cated which channel is selected. A footswitch  
(#21) overrides this switch.  
2: GAIN 1: Gain 1 is active only when the Gain  
Select switch (#5) is out. When active, this con-  
trol adjusts the amount of compression and dis-  
tortion 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 distor-  
tion than Gain 2.  
CLEAN CHANNEL: A normal gain channel  
designed to give you crystal clear sounds.  
10: LEVEL: Use this control to adjust the output  
3: GAIN 2: Gain 2 is active only when the Gain  
Select switch (#5) is depressed. When active,  
this control adjusts 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 .  
level of the Clean Channel.  
11: LOW: Use this control to adjust the low fre-  
quency output level of the Clean channel. This  
control provides a range of 22dB at 80Hz.  
12: MID: Use this control to adjust the mid fre-  
quency output level of the Clean channel. This  
control provides a range of 14dB at 600Hz.  
13: HIGH: Use this control to adjust the high fre-  
quency output level of the Clean channel. This  
control provides a range of 28dB at 10kHz.  
4: SHAPE: Working in conjunction with the Gain  
2 control, rotate the Shape control until you find  
the sound you’re looking for. Rotating the control  
counter-clockwise enhances the mid frequen-  
cies; rotating it clockwise enhances the low and  
high frequencies. (This control is only effective  
when Gain 2 is selected.)  
14: REVERB LEVEL: Use this control to adjust  
the amount of reverberation. In the full counter-  
clockwise position the output signal is “dry” (no  
reverb); rotating the control clockwise increases  
the amount of reverb. The reverb can be turned  
on and off by means of a footswitch (see #22).  
5: GAIN SELECT: Use this switch to select Gain  
1 (switch out) or Gain 2 (switch depressed). A  
footswitch (#21) overrides this switch.  
15: INSERT: Use this jack to connect an exter-  
nal effects device to the amplifier. Use a stereo  
1/4” male Y-cord: ring = send, tip = return, sleeve  
= ground. See the illustration on the panel to the  
right for more information.  
6: LOW: Use this control to adjust the low fre-  
quency output level of the Overdrive channel.  
This control provides a range of 11dB at 80Hz.  
7: HIGH: Use this control to adjust the high fre-  
quency output level of the Overdrive channel.  
This control provides a range of 10dB at 10kHz.  
4
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GX-212 Amplifier  
16: EXT. SPEAKER: Use this jack to connect an  
extension speaker cabinet to the amplifier. This  
jack is wired in series with the internal speaker(s).  
Connecting to the Insert jack:  
The Insert jack (#15) 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 in the  
illustration below.  
WARNING: Do not attempt to use head-  
phones in the Speaker jack! Permanent  
hearing damage could result!  
17: POWER ON LED: This LED illuminates  
when the amplifier is turned on.  
18: POWER SWITCH: Use this switch to turn  
the amplifier on (top of the switch depressed)  
and off (bottom of the switch depressed).  
Stereo-to-mono Y-cord:  
Y-adapter and 2 cables:  
19. POWER CORD (rear panel, not shown):  
The grounded power cord should only be  
plugged into a grounded power outlet that meets  
all applicable electrical codes and is compatible  
with the voltage, power, and frequency require-  
ments stated on the rear panel. Do not attempt  
to defeat the safety ground connection.  
TIP  
RING  
SLEEVE  
RETURN  
TIP  
to Insert  
jack  
to Insert  
jack  
SEND  
RING  
GROUND  
SLEEVE  
(STP201, 3'  
STP202, 6'  
STP203, 9')  
(YPP117)  
20: FUSE (rear panel, not shown): This pro-  
tects the amplifier against damages caused  
from a faulty AC power source or other prob-  
lems. 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, con-  
tact your Crate dealer for service information.  
(1/4"-TO-1/4"  
MONO CABLES)  
21: CHANNEL SELECT / GAIN FOOTSWITCH  
JACK (rear panel, not shown): Use this jack to  
connect the 1/4” stereo plug on the footswitch  
cable to the three-button footswitch (supplied).  
This allows you to remotely switch between the  
Clean and Overdrive channels and between  
Gain 1 and 2 of the Overdrive channel.  
to  
to  
effect  
"IN"  
to  
to  
effect  
"IN"  
effect  
"OUT"  
jack  
effect  
"OUT"  
jack  
jack  
jack  
External Effect  
External Effect  
22: REVERB FOOTSWITCH JACK (rear panel,  
not shown): Use this jack to connect the 1/4”  
mono plug on the footswitch cable to the three-  
button footswitch (supplied). This allows you to  
remotely turn the reverb on and off.  
5
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GX-212 Amplifier  
SUGGESTED STARTING SETTINGS:  
CLEAN:  
OUT  
BLUES:  
OUT  
IN  
RHYTHM:  
OUT  
IN  
LEAD:  
IN  
IN  
6
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GX-212 Amplifier  
SYSTEM BLOCK DIAGRAM:  
CLEAN  
CHANNEL  
BUFFER  
INPUT  
CHANNEL  
SELECT  
VOLUME LOW MID HIGH  
EQ  
SHAPE  
ACTIVE  
OVERDRIVE  
CHANNEL  
GAIN 1  
GAIN 2  
LOW HIGH LEVEL  
GAIN  
SHAPE  
SELECT  
MIX  
AMP  
INSERT  
REVERB  
LEVEL  
POWER  
AMP  
SPEAKER  
DAMPING  
CIRCUIT  
EXT.  
SPEAKER  
7
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GX-212 Amplifier  
GX-212 TECHNICAL SPECIFICATIONS  
Output Power Rating  
115 watts RMS @ 5% THD 4 ohms load 120VAC  
Speaker Size and Rating  
Input Impedance  
(2) Crate Custom 12”, 8 ohms  
470k ohms  
Maximum Input Signal Level Accepted  
Total System Gain  
7 volts, peak-to-peak  
Overdrive Channel: 110dB all controls @10, Gain 2; 88dB Gain 1  
Clean Channel: 58dB all controls @10  
Overdrive Channel:  
Clean Channel:  
Low Control:  
Shape Control:  
High Control:  
11dB Range @ 80Hz  
Proprietary Circuit  
10dB Range @ 10kHz  
Low Control:  
Mid Control:  
High Control:  
22dB Range @ 80Hz  
14dB Range @ 600Hz  
28dB Range @ 10kHz  
Input Power Requirements  
120 VAC, 60Hz, 95VA  
100/115VAC, 50/60Hz, 95VA  
230VAC, 50/60Hz, 95VA  
Cabinet Size and Weight:  
21” H x 26-1/2” W x 11” D, 50 lbs.  
The GX-212 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.  
Declaration Of Conformity  
#30, Effective 01-01-2001  
Manufacturer’s Name:  
Production Facility:  
SLM Electronics  
11880 Borman Drive, St. Louis, MO 63146, USA  
700 Hwy 202 W, Yellville, AR 72687, USA  
1400 Ferguson Ave., St. Louis, MO 63133, USA  
1400 Ferguson Ave., St. Louis, MO 63133, USA  
Production Facility:  
Shipping Facility:  
Office Facility:  
Product Type:  
Audio Amplifier  
Complies with Standards:  
LVD:  
Safety:  
EMC:  
92/31/EEC, 93/68/EEC, & 73/23/EWG  
EN60065  
EN55013, EN55020, EN55022, EN61000-3-2,  
& EN61000-3-3  
Supplementary information provided by:  
SLM Electronics - R & D Engineering  
1901 Congressional Drive, St Louis, MO 63146, USA  
Tel.: 314-569-0141, Fax: 314-569-0175  
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. U.S.A. 63133  
P/N 18-160-03 • 05/02  
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