Crate Amplifiers Musical Instrument Amplifier GTD120 User Manual

GTD120  
212  
Three-Channel Guitar Amplifier  
with DSP and Channel Tracking  
Owner’s Manual  
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GTD120/212 Guitar Amplifier w/DSP and Channel Tracking  
TABLE OF CONTENTS  
Introduction .............................................................3  
Channel Tracking .....................................................4  
The Front Panel .......................................................5  
The Rear Panel ........................................................6  
The DSP Section......................................................7  
Using the Footswitch with the DSP............................8  
Suggested Settings..................................................9  
System Block Diagram...........................................10  
Technical Specifications..........................................12  
Service Information................................................12  
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  
MOISTURE. 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  
OPERATION AND TO AVOID INJURY.  
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK OR FIRE, DO NOT EXPOSE THIS UNIT TO RAIN OR 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  
PROTECTION IS RECOMMENDED IF UNIT IS OPERATED AT HIGH VOLUME.  
• WARNING: THIS UNIT REQUIRES A SAFETY GROUNDED OUTLET WIRED TO CURRENT ELECTRIC CODES HAVING THE  
LINE SUPPLY VOLTAGE, POWER, AND FREQUENCY IDENTIFIED ON THE REAR OF THE UNIT. THE OUTLET MUST REMAIN  
ACCESSIBLE TO DISCONNECT THE UNIT IF A FAULT SHOULD ARISE WHILE IN USE. THIS UNIT SHOULD BE UNPLUGGED WHEN  
NOT IN USE.  
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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GTD120/212 Guitar Amplifier w/DSP and Channel Tracking  
Introduction  
Congratulations! You are now the proud owner of the Crate GTD120/212 three-channel guitar  
amplifier with advanced digital signal processing (DSP) and Channel Tracking. This rugged  
amplifier combines outstanding features with serious clean and distorted sounds. Digital  
Reverb, Chorus, and Delay provide you with a wide variety of sounds. Crate’s unique Channel  
Tracking feature automatically stores your DSP settings for each channel to memory. As you  
switch from one channel to another, the DSP settings for the selected channel are instantly  
recalled. The supplied three-button footswitch allows you to select channels and change the  
DSP bank (Bank A/Bank B) by “remote control.” A front panel 1/8" stereo CD input jack allows  
you to play along with your CD player, MP3 player, or iPod. A rear panel insert jack allows you  
to add even more effects by connecting an external effect processor.  
Like all Crate products, your GTD amplifier is designed by musicians and built using only the  
best components. Extensive testing confirms 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 read this manual  
before you begin playing.  
And thank you for choosing Crate.  
Here are some of the features packed into your new GTD120/212 Combo Amplifier:  
120 watts rms power output  
2 x 12" speaker  
Three-Channel Operation  
—High Gain Channel  
—Overdrive Channel  
—Clean Channel  
3-band EQ on the Overdrive and Clean Channels  
Proprietary “Shape” EQ control on the High Gain Channel  
DSP Effects including Delay, Chorus, and Reverb sections  
CD Input  
Effects Loop  
3-Function Footswitch included  
External Speaker jack  
Built-in Chromatic Tuner  
3
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GTD120/212 Guitar Amplifier w/DSP and Channel Tracking  
Channel Tracking  
Your Crate GTD120/212 gives you the power of Channel Tracking. Once you select a DSP  
setting for each channel, Channel Tracking stores the settings to memory whenever you  
change channels. When you go back to that channel, Channel Tracking recalls those DSP set-  
tings automatically, without changing the DSP controls!  
For example:  
• Select the Clean channel. Set the Chorus control to “Flanger,” the Delay control to “Echo,”  
and adjust the Reverb control to your preference.  
• Select the Overdrive channel. Set the Chorus control to “Chorus,” the Delay control to  
“Slap,” and readjust the Reverb control to a different setting. (The DSP settings for the  
Clean channel are now saved to memory.)  
• Select the High Gain channel. Set the Chorus control to “Phaser,” the Delay control  
to “Echo/Eff,” and readjust the Reverb control once again. (The DSP settings for the  
Overdrive channel are now saved to memory.)  
• Reselect the Clean channel. (The DSP settings for the High Gain channel are now saved to  
memory.)  
When you reselected the Clean channel, the DSP settings previously stored in memory were  
automatically recalled. Switch to the Overload channel and the DSP settings you just stored  
are still there. You can change the DSP settings at any time. Once you set the DSP and select  
another channel, Channel Tracking stores the settings for you. Even when the amplifier is  
turned off, the DSP settings are stored and recalled the next time you turn it on. That’s the  
power of Channel Tracking!  
In addition, each channel has two DSP banks, Bank A and Bank B, when you use the supplied  
three-button footswitch (see page 8 for more information on using the footswitch). Channel  
Tracking also remembers which DSP bank was selected for each channel.  
4
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GTD120/212 Guitar Amplifier w/DSP and Channel Tracking  
The Front Panel  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13 14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
1. INPUT: Use this jack to connect your  
guitar to the amplifier by means of a shield-  
ed instrument cable.  
2. HIGH GAIN LED: This LED illuminates  
when the High Gain channel is selected.  
3. GAIN: Use this control to adjust the amount  
of distortion for the High Gain channel.  
4. SHAPE: Use this control to “dial in” the  
tone for the High Gain channel. Rotating  
this control counter-clockwise enhances the  
mid frequencies, while rotating it clockwise  
enhances the low and high frequencies.  
13. OVERDRIVE/CLEAN: Use this switch  
to select the Clean channel or the Overdrive  
and High Gain channels. With the switch in  
the out position, the Clean channel is select-  
ed. When the switch is pushed in, either the  
High Gain or Overdrive channel is selected,  
depending on the setting of the High Gain/  
Overdrive switch [6].  
14. CLEAN LED: This LED illuminates when  
the Clean channel is selected.  
15. VOLUME: Use this control to adjust the  
output level of the Clean channel.  
16. LOW: This adjusts the bass frequen-  
cies. Use this control to get the best sound-  
ing bass response for your instrument when  
using the Clean channel.  
17. MID: This adjusts the midrange frequen-  
cies. Use this control to get the best projec-  
tion and midrange tones for your instrument  
when using the Clean channel.  
18. HIGH: This adjusts the treble frequen-  
cies. Use this control to attain a bright and  
lively sound for your instrument when using  
the Clean channel.  
19-21. EFFECTS: Use these controls to apply  
and adjust the DSP effects. Complete informa-  
tion on these effects is provided on page 7.  
22. CD INPUT: Use this 1/8" stereo mini  
jack to connect the output from a CD player,  
MP3 player, laptop, etc., to the amplifier.  
The signal at this jack is summed into a  
mono signal, which is sent to the internal  
power amp circuit. Use the output level con-  
trol for the signal source to adjust the signal  
for the proper mix with your guitar.  
5. LEVEL: Use this control to adjust the out-  
put level of the High Gain channel.  
6. HIGH GAIN/OVERDRIVE: Use this switch  
to select the High Gain or Overdrive chan-  
nel. With the switch in the out position, the  
Overdrive channel is selected. When the  
switch is pushed in, the High Gain channel is  
selected. Note: This switch is only active when  
the Overdrive/Clean switch [13] is pushed in.  
7. OVERDRIVE LED: This LED illuminates  
when the Overdrive channel is selected.  
8. GAIN: Use this control to adjust the amount  
of distortion for the Overdrive channel.  
9. LOW: This adjusts the bass frequencies.  
Use this control to get the best sounding  
bass response for your instrument when  
using the Overdrive channel.  
10. MID: This adjusts the midrange frequen-  
cies. Use this control to get the best projec-  
tion and midrange tones for your instrument  
when using the Overdrive channel.  
11. HIGH: This adjusts the treble frequen-  
cies. Use this control to attain a bright and  
lively sound for your instrument when using  
the Overdrive channel.  
23. POWER: Use this switch to turn the  
amplifier on (top of the switch depressed)  
and off (bottom of the switch depressed).  
The switch illuminates when the amplifier is  
12. LEVEL: Use this control to adjust the  
output level of the Overdrive channel.  
turned on.  
5
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GTD120/212 Guitar Amplifier w/DSP and Channel Tracking  
The Rear Panel  
24  
25  
26  
27  
28  
30  
24. FUSE: The fuse protects the amplifier  
from damage caused by a faulty AC power  
source or other problems. If the fuse opens,  
replace it with the same size and type. If  
fuses continue to fail, check the AC source. If  
the source is okay, refer to page 12 or con-  
tact your Crate dealer for service information.  
25. EXTENSION SPEAKER: Use this jack  
to connect the amplifier to an external speak-  
er cabinet. This jack is wired in series with  
the internal speaker, which remains active  
when an extension speaker is connected.  
28. INSERT: Use this jack to connect an  
external signal processor to the amplifier. Use  
Crate’s STP201, STP202, or STP203 stereo-  
to-mono Y-cord or an adapter such as Crate’s  
YPP117 and two 1/4" mono signal cables to  
connect to the effect, as shown below.  
29. POWER CORD (not shown): This  
grounded power cord is to be plugged into  
a grounded power outlet, wired to current  
electrical codes and compatible with the  
voltage, power, and frequency requirements  
stated on the rear panel. Do not attempt to  
defeat the safety ground connection!  
26. DSP FOOTSWITCH:  
Use this jack to connect one of the footswitch  
cables to the three-button footswitch (sup-  
plied). This allows you to select between two  
DSP presets for each of the three channels.  
Additional information about the operation  
of the footswitch is on  
30. ELECTRONIC TUNER (cabinet top)  
The electronic tuner is active whenever the  
amplifier is turned on, providing constant  
“real-time” tuning. The row of red LEDs on  
the left indicates which note is being tuned.  
When a single LED is lit,  
Stereo-to-mono Y-cord:  
Y-adapter and 2 cables:  
page 8.  
27. CHANNEL  
it represents the note  
TIP  
RING  
SLEEVE  
RETURN  
TIP  
RING  
SLEEVE  
to Insert  
jack  
to Insert  
jack  
that appears just below  
the LED. When two LEDs  
are lit, it represents  
SEND  
GROUND  
FOOTSWITCH: Use this  
jack to connect one of  
the footswitch cables  
to the three-button foot-  
switch (supplied). This  
allows you to remotely  
switch between the  
Clean, High Gain, and  
Overdrive channels.  
Additional information  
about the operation of  
the footswitch is on  
page 8.  
(STP201, 3'  
STP202, 6'  
STP203, 9')  
the note that appears  
between them in the  
bottom row. The left  
green LED indicates the  
note is flat, and the right  
green LED indicates the  
note is sharp. The note  
is properly tuned when  
both LEDs are lit at the  
same time.  
(YPP117)  
(1/4"-TO-1/4"  
MONO SHIELDED  
CABLES)  
to  
to  
effect  
"IN"  
to  
to