Crate Amplifiers Stereo Amplifier GTX65 User Manual

GTX65  
Three-Channel Guitar Amplifier  
with Advanced Digital Signal  
Processing  
User’s Guide  
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GTX65 Three-Channel Guitar Amplifier with Advanced DSP  
Congratulations!  
You are now the proud owner of the Crate GTX65  
three-channel guitar amplifier with Advanced Digital Signal  
Processing. This rugged amplifier combines outstanding  
features with serious clean and distorted sounds. Dual  
DSP controls provide 15 “Multi” effects and 15 Delay  
effects which can be combined for a wide variety of  
sounds. The Save/Tap button allows you to manually set  
the tempo of many of the effects and to save new DSP  
presets in the amplifier’s non-volatile memory. A separate  
Reverb control adds even more to the array of effects.  
Front panel RCA CD Input jacks allow you to play along  
with your favorite CD or tape. The rear panel Insert Jack  
allows you to connect your effects for greater flexibility.  
Channel switching and DSP may be controlled by means  
of a footswitch, which also allows access to two DSP pre-  
sets on each of the three channels.  
Like all Crate products, your GTX65 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  
suggest that you read the information contained in this guide  
before you begin playing.  
CRATE  
And thank you for choosing  
.
3
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GTX65 Three-Channel Guitar Amplifier with Advanced DSP  
The Front Panel:  
20  
1
2
3
4
5
6
7
8
9
10  
11  
1: INPUT: Use this jack to connect your guitar to the amplifier by means of a shielded  
instrument cable.  
SOLO/RHYTHM CHANNELS: High gain channels giving you sounds with serious over-  
drive.  
2: SOLO LED: This LED illuminates when the Solo channel is selected.  
3: GAIN: Use this control to adjust the amount of distortion produced by the Solo channel.  
4: SHAPE: Use this control to “dial in” the tone for the Solo channel. Rotating the control  
counterclockwise enhances the mid frequencies, while rotating the control clockwise  
enhances the low and high frequencies.  
5: LEVEL: Use this control to adjust the output level of the Solo channel.  
6: SOLO/RHYTHM SELECT: Use this switch to select the Solo or Rhythm channel. When  
this switch is depressed, the Solo channel is selected. With the switch in the out position,  
the Rhythm channel is selected. This switch is active only when the Solo-Rhythm/Clean  
Select switch (#13) is depressed.  
7: RHYTHM LED: This LED illuminates when the Rhythm channel is selected.  
8: GAIN: Use this control to adjust the amount of distortion produced by the Rhythm channel.  
9: LOW: Use this control to adjust the low frequency level of the Solo/Rhythm channel.  
10: MID: Use this control to adjust the midrange frequency level of the Solo/Rhythm channel.  
11: HIGH: Use this control to adjust the high frequency level of the Solo/Rhythm channel.  
12: LEVEL: Use this control to adjust the output level of the Rhythm channel.  
13: SOLO-RHYTHM/CLEAN SELECT: Use this switch to select the Clean channel or the  
Solo and Rhythm channels. With the switch in the out position, the Clean channel is select-  
ed. When the switch is depressed, either the Solo or Rhythm channel is selected, depend-  
ing on the setting of the Solo/Rhythm Select switch (#6).  
CLEAN CHANNEL: A normal gain channel designed to give you crystal clean sounds.  
14: CLEAN LED: This LED illuminates when the Clean channel is selected.  
15: VOL: Use this control to adjust the output level of the Clean channel.  
4
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GTX65 Three-Channel Guitar Amplifier with Advanced DSP  
21  
22 23  
24  
12  
13 14  
15  
16  
17  
18  
19  
25  
16: LOW: Use this control to adjust the low frequency level of the Clean channel.  
17: MID: Use this control to adjust the midrange frequency level of the Clean channel.  
18: HIGH: Use this control to adjust the high frequency level of the Clean channel.  
19: CD INPUT: Use these RCA jacks to connect the output from a CD player or tape deck  
to the amplifier. The signal at these jacks is combined into a mono signal which is sent to  
the internal power amp circuit. Use the CD or tape player’s output level control to adjust  
the signal for the proper mix with your guitar.  
20: DSP MULTI: Use this control to select one of the fifteen “Multi” digital effects. Complete  
information about the DSP effects is on page 7.  
21: DSP DELAY: Use this control to select one of the fifteen Delay digital effects.  
Complete information about the DSP effects is on page 7.  
22: SAVE/TAP: Use this pushbutton to set the tempo of many of the effects by tapping the  
button repeatedly in time with the desired tempo. The Save/Tap button is also used to save  
DSP presets and to restore the factory default DSP settings. Additional information about  
the Save/Tap button is on pages 7 and 8.  
23: SAVE/TAP LED: This LED flashes in time with the tempo set by the Save/Tap button  
(#22), and serves as a status indicator for certain DSP activities (see page 8).  
NOTE: For some of the DSP effects, the Save/Tap LED remains illuminated. The Save/Tap LED  
does not illuminate when the DSP knobs are set to the Bypass position.  
24. REVERB: Use this control to adjust the amount of digital reverb effect. In its fully coun-  
terclockwise position the signal will be “dry” (without any reverb). As you rotate the control  
clockwise the amount of reverb increases.  
25: 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 power is on.  
NOTE: When the amplifier is turned on, the Save/Tap LED flashes for one second before the  
amplifier is operational.  
5
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GTX65 Three-Channel Guitar Amplifier with Advanced DSP  
The Rear Panel:  
100VAC:T2.5A  
120VAC:T2A  
230/240VAC:T1.25A  
250V  
250V  
EXTENSION  
SPEAKER  
DSP  
CHANNEL  
INSERT  
250V  
BANK A  
BANK B  
CLEAN  
SOLO/RTHM  
CAUTION: TO REDUCETHE RISK OF FIRE,  
REPLACE FUSE WITH SAME TYPE AND RATING.  
ATTENTION: UTILISER UN FUSIBLE DE  
RECHANGE DE MEME TYPE.  
FOOTSWITCH  
26  
27  
28  
29  
30  
26: FUSE: The fuse protects the amplifier from damages caused by a faulty AC power source and/or  
other problems. If the fuse opens, replace it ONLY with the same size and type. If fuses continue to  
fail, check the AC source – if the source is okay, contact your Crate dealer for service information.  
27: EXTENSION SPEAKER: Use this jack to connect the amplifier to an external speaker cabinet.  
This jack is wired in series with the internal speaker(s) which remain active when an extension speak-  
er is connected.  
28: DSP A/B FOOTSWITCH: Use this jack to connect one of the footswitch cables to the three-but-  
ton footswitch (supplied). This allows you to select between two presets for each of the three chan-  
nels. Additional information about the operation of the footswitch is on page 9.  
29: CLEAN/SOLO/RHYTHM FOOTSWITCH: Use this jack to connect one of the footswitch cables to  
the three-button footswitch (supplied). This allows you to remotely switch between the Clean and  
Distortion channels and between the Solo and Rhythm channels. (See page 9.)  
30: 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.  
27: AC LINE 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 require-  
ments stated on the rear panel. Do not attempt to defeat the safety ground connection.  
Stereo-to-mono Y-cord:  
Y-adapter and 2 cables:  
TIP  
RING  
SLEEVE  
RETURN  
TIP  
to Insert  
jack  
to Insert  
jack  
SEND  
RING  
GROUND  
SLEEVE  
(STP201, 3'  
STP202, 6'  
STP203, 9')  
(YPP117)  
(1/4"-TO-1/4"  
MONO SHIELDED  
CABLES)  
to  
to  
effect  
"IN"  
to  
to  
effect  
"IN"  
effect  
"OUT"  
jack  
effect  
"OUT"  
jack  
jack  
jack  
External Effect  
External Effect  
6
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GTX65 Three-Channel Guitar Amplifier with Advanced DSP  
The DSP Section:  
The GTX65 features DSP  
controls for Multi, Delay and  
Reverb. Complete information  
about the Multi and Delay  
effects is given below. The Multi control selects the “pitch modified” and wah effects.  
Many of these effects have their speed controlled by the Save/Tap button. The Delay  
control selects the delay or echo effects. All of these effects have their speed controlled  
by the Save/Tap button. Additional information is provided on pages 5 and 10.  
SIGNAL PATH FOR ECHO LO, MID & HI EFFECTS:  
DELAY MULTI  
SIGNAL PATH FOR ALL OTHER EFFECTS:  
MULTI DELAY  
MULTI:  
NAME  
DESCRIPTION  
Chorus w/low depth  
SAVE/TAP BUTTON CONTROLS:  
speed: 1 cycle/tap - tap period: .05–1 second  
speed: 1 cycle/tap - tap period: .05–1 second  
speed: 1 cycle/tap - tap period: .05–1 second  
speed: 4 cycle/tap - tap period: .05–1 second  
speed: 4 cycle/tap - tap period: .05–1 second  
speed: 4 cycle/tap - tap period: .05–1 second  
speed: 2 cycle/tap - tap period: .05–1 second  
speed: 2 cycle/tap - tap period: .05–1 second  
speed: 2 cycle/tap - tap period: .05–1 second  
speed: 1 cycle/tap - tap period: .05–1 second  
speed: 1 cycle/tap - tap period: .05–1 second  
speed: 1 cycle/tap - tap period: .05–1 second  
n/a  
Chorus LO  
Chorus MID  
Chorus HI  
Flange LO  
Flange MID  
Flange HI  
Phaser LO  
Phaser MID  
Phaser HI  
Vibrato LO  
Vibrato MID  
Vibrato HI  
Octave Down  
Touch Wah  
Reverse Wah  
Bypass  
Chorus w/medium depth  
Chorus w/high depth  
Flanger w/low depth  
Flanger w/medium depth  
Flanger w/high depth  
Phaser w/low feedback  
Phaser w/medium feedback  
Phaser w/high feedback  
Vibrato w/low depth  
Vibrato w/medium depth  
Vibrato w/high depth  
Adds signal one octave lower  
Touch-sensitive wah-wah  
Inverted wah-wah  
n/a  
n/a  
n/a  
Dry signal - no effect  
DELAY:  
NAME  
DESCRIPTION  
SAVE/TAP BUTTON CONTROLS:  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
Single LO  
Single MID  
Single HI  
Single MAX  
Echo LO  
Echo MID  
Echo HI  
Echo MAX  
Tape LO  
Single delay w/low level  
Single delay w/medium level  
Single delay w/high level  
Single delay w/maximum level  
Echo w/low level  
Echo w/medium level  
Echo w/high level  
Echo w/maximum level  
Tape echo w/low level  
Tape echo w/medium level  
Tape echo w/high level  
Tape echo w/maximum level  
Echo w/low level, before multi effect  
Echo w/medium level, before multi effect  
Echo w/high level, before multi effect  
dry signal - no effect  
Tape MID  
Tape HI  
Tape MAX  
Echo FX LO  
Echo FX MID  
Echo FX HI  
Bypass  
time: .05–1 second  
time: .05–1 second  
n/a  
7
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GTX65 Three-Channel Guitar Amplifier with Advanced DSP  
Storing Your Own Presets:  
Each channel of the GTX65 has two factory assigned DSP presets, as shown on  
pages 10 and 11. No matter what the settings of the DSP controls, the preset is recalled  
when a channel is selected. You may change the DSP settings by rotating the DSP con-  
trols - these changes will remain active until a different channel is selected, but will not  
be there for later use unless they are saved. To save a new DSP preset to a channel,  
first make the desired DSP changes. Then press and hold the Save/Tap button for about  
three seconds. The Save/Tap LED will flash through three quick sequences, indicating  
the preset was saved. The new preset is stored for that channel and will remain in mem-  
ory until a new preset is stored for that channel or the factory presets are restored.  
We recommend making copies of page 14 of this manual for the purpose of writing down your own presets.  
SECONDS  
CHANGES ARE  
SAVED AS  
NEW PRESET  
Restoring the Factory Presets:  
The factory assigned DSP presets may be restored, erasing any changes you have  
made. Turn the amplifier off. Press and hold the Save/Tap button as you turn the amplifi-  
er on. The Save/Tap LED will flash through two quick sequences, indicating the factory  
presets have been restored.  
More About the Save/Tap Button:  
The Save/Tap button is used to set the tempo of an effect by pressing it twice within  
a one second time frame. The time between the two taps sets the timing of the effect. If  
the Save/tap button is pressed an odd number of times (once, three times, etc.), the tim-  
ing will default to the maximum one second time period.  
The Multi effects and the Delay effects may each have a different tap speed. The  
default “target” for the Save/Tap button is the Delay control. To select the Multi control as  
the tap button’s target, rotate the Multi control. The Save/Tap tempo function will auto-  
matically revert back to the Delay control 16 seconds after the Multi control is rotated, or  
when the tap speed was last changed for the Multi effect.  
NOTE: In most cases, it is usually more pleasing to the ear to set a slower tap speed for the HI effects and  
a faster tap speed for the LO effects.  
8
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GTX65 Three-Channel Guitar Amplifier with Advanced DSP  
Using the Footswitch for More Presets:  
The Crate three-button footswitch supplied with the GTX65 allows access to an addi-  
tional DSP preset for each channel of the amplifier. When the footswitch is connected to  
the amplifier as shown below, the “original” DSP presets are active for each channel  
when the #3 footswitch LED is illuminated. These are referred to as “DSP Bank ‘A’.”  
When the #3 button is switched and the LED is out, a second DSP preset may be stored  
and recalled for each channel - “DSP Bank ‘B’.”  
NOTE: DSP Bank “B” presets are only accessible when the footswitch is connected to the amplifier. When  
the footswitch is not connected, only DSP Bank “A” is accessable.  
100VAC:T2.5A  
120VAC:T2A  
230/240VAC:T1.25A  
250V  
250V  
EXTENSION  
SPEAKER  
DSP  
CHANNEL  
INSERT  
250V  
BANK A  
BANK B  
CLEAN  
SOLO/RTHM  
CAUTION: TO REDUCETHE RISK OF FIRE,  
REPLACE FUSE WITH SAME TYPE AND RATING.  
ATTENTION: UTILISER UN FUSIBLE DE  
RECHANGE DE MEME TYPE.  
FOOTSWITCH  
"LEFT" jack  
"RIGHT" jack  
1
2
3
Switch #1:  
Switch #2:  
Switch #3:  
LED on = SOLO CH.  
LED on = SOLO/  
RHYTHM CH.  
LED on = DSP  
BANK "A"  
LED off = RHTYHM CH.  
LED off = CLEAN  
CH.  
LED off = DSP  
BANK "B"  
Only when Switch #2  
is activated (LED lit)!  
9
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GTX65 Three-Channel Guitar Amplifier with Advanced DSP  
DSP Factory Presets:  
The GTX65 Factory Presets for the DSP section are as follows:  
Factory Preset 1: Clean w/Chorus, Delay,Reverb  
CHANNEL: SOLO  
RHYTHM  
TAP Tempo MEDIUM  
TAP Tempo MEDIUM  
CLEAN  
BANK: "A"  
"B"  
Factory Preset 2: Rhythm w/Slapback Delay  
CHANNEL: SOLO  
RHYTHM  
TAP Tempo FAST  
TAP Tempo N/A  
CLEAN  
BANK: "A"  
"B"  
Factory Preset 3: Solo w/Flange,Delay,Reverb  
CHANNEL: SOLO  
RHYTHM  
TAP Tempo MEDIUM  
TAP Tempo MEDIUM  
CLEAN  
BANK: "A"  
"B"  
10  
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GTX65 Three-Channel Guitar Amplifier with Advanced DSP  
DSP Factory Presets:  
The GTX65 Factory Presets for the DSP section are as follows:  
Factory Preset 4: Clean w/Reverb  
CHANNEL: SOLO  
RHYTHM  
TAP Tempo N/A  
TAP Tempo N/A  
CLEAN  
BANK: "A"  
"B"  
Factory Preset 5: Rhythm w/Reverb  
CHANNEL: SOLO  
RHYTHM  
TAP Tempo N/A  
TAP Tempo N/A  
CLEAN  
BANK: "A"  
"B"  
Factory Preset 6: Solo w/Reverb  
CHANNEL: SOLO  
RHYTHM  
TAP Tempo N/A  
TAP Tempo N/A  
CLEAN  
BANK: "A"  
"B"  
11  
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GTX65 Three-Channel Guitar Amplifier with Advanced DSP  
Suggested Settings:  
TAP Tempo MEDIUM  
TAP Tempo N/A  
"Haze Faze"  
Rhythm with  
Phase  
& Reverb  
OUT  
IN  
TAP Tempo N/A  
TAP Tempo N/A  
"Solo Wah"  
Solo with  
Wah, Delay  
& Reverb  
IN  
IN  
TAP Tempo N/A  
TAP Tempo N/A  
"Octanator"  
Solo with  
Octave  
& Reverb  
IN  
IN  
12  
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GTX65 Three-Channel Guitar Amplifier with Advanced DSP  
Suggested Settings:  
TAP Tempo MEDIUM  
TAP Tempo N/A  
"Haze Faze"  
Rhythm with  
Phase  
& Reverb  
OUT  
IN  
TAP Tempo N/A  
TAP Tempo N/A  
"Solo Wah"  
Solo with  
Wah, Delay  
& Reverb  
IN  
IN  
TAP Tempo N/A  
TAP Tempo N/A  
"Octanator"  
Solo with  
Octave  
& Reverb  
IN  
IN  
13  
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GTX65 Three-Channel Guitar Amplifier with Advanced DSP  
DSP Fill in the Blanks(User Settings):  
Copy this page to fill in your own DSP Presets!  
User Preset: _________________________________  
CHANNEL: SOLO  
RHYTHM  
TAP Tempo __________  
TAP Tempo __________  
CLEAN  
BANK: "A"  
"B"  
User Preset: _________________________________  
CHANNEL: SOLO  
RHYTHM  
TAP Tempo __________  
TAP Tempo __________  
CLEAN  
BANK: "A"  
"B"  
User Preset: _________________________________  
CHANNEL: SOLO  
RHYTHM  
TAP Tempo __________  
TAP Tempo __________  
CLEAN  
BANK: "A"  
"B"  
14  
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GTX65 Three-Channel Guitar Amplifier with Advanced DSP  
System Block Diagram:  
BUFFER  
INPUT  
CLEAN CHNL  
VOL LOW MID HIGH  
SOLO-RTHM/  
CLEAN  
SELECT  
SOLO  
SOLO  
RTHM  
RTHM  
SOLO  
SOLO  
RTHM  
SWITCHING  
CIRCUIT  
LEVEL  
SOLO/ RTHM  
SELECT  
RTHM  
LEVEL  
SOLO  
GAIN  
RTHM  
GAIN  
SHAPE  
LOW MID HIGH  
MIX  
AMP  
INSERT  
REVERB  
POWER  
AMP  
TAP  
SPEAKER  
MULTI  
DELAY  
CD  
INPUT  
EXT.  
SPEAKER  
DAMPING  
CIRCUIT  
15  
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GTX65 Three-Channel Guitar Amplifier with Advanced DSP  
GTX65 TECHNICAL SPECIFICATIONS:  
Output Power Rating  
Speaker Size and Rating  
Input Impedance  
65W RMS @5% THD, 8, 120 VAC  
(1) Custom Design 12”, 8Ω  
470kΩ  
Total System Gain  
Solo Ch  
Rhythm Ch  
Clean Ch  
110dB, all controls @10  
88dB, all controls @10  
58dB, all controls @10  
CD Input  
29dB  
Maximum Input Signal Accepted  
7 volts peak-to-peak  
Proprietary Circuit  
Solo Channel  
Shape Control  
Rhythm Channel  
Low Control  
Mid Control  
High Control  
20dB range @ 80Hz  
15dB range @ 1kHz  
20dB range @ 10kHz  
Clean Channel  
Low Control  
Mid Control  
High Control  
36dB range @ 80Hz  
15dB range @ 800Hz  
40dB range @ 10kHz  
Power Requirements  
120 VAC, 60Hz, 90VA  
100/115VAC, 50/60Hz, 90VA;  
230VAC, 50/60Hz, 90VA  
Size and Weight  
17-1/2” H x 20” W x 11” D, 34 lbs.  
The GTX65 is covered with a durable Tolex material: wipe it clean with a lint-free cloth.  
Never spray cleaning agents onto the cabinet. Avoid abrasive cleansers which would damage the finish.  
Crate continually develops new products, as well as improves existing ones. For this reason, the specifications  
and information in this manual are subject to change without notice.  
Declaration Of Conformity  
#30, Effective 01-01-2001  
Manufacturers 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  
@2003 SLM Electronics, a division of St. Louis Music, Inc 1400 Ferguson Avenue St. Louis, MO 63133  
47-475-07 021803  
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