Owner’s Manual
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GFX-65T Guitar Amplifier with DSP & ChannelTracking
The Digital Signal Processor:
Crate’s Digital Signal Processing offers 16 exciting digital effects, accessible through the DSP
Mode control. The effects are described below.
1
2
REV 1
REV 2
REV 3
REV 4
DLY 1
DLY 2
DLY 3
small room reverb
medium room reverb
3
large room reverb
4
concert hall reverb
5
short slapback + small room reverb
medium delay + plate reverb
long delay + large room reverb
6
7
8
FLNG 1 slow deep flange + reverb
FLNG 2 flange + reverb + delay
CHO 1 slow tremolo chorus + reverb
CHO 2 chorus + reverb + delay
9
10
11
12
RTRY
simulated rotating speaker effect
13 OCTV DN adds a signal one octave lower than input
14
15
16
T-WAH touch sensitive wah-wah effect
I-WAH
DBLR
inverse wah-wah effect
simulated second track, slightly out-of-sync
Channel Tracking:
Your Crate GFX-65T gives you the power of Channel Tracking! Once you select a DSP setting
for each channel, Channel Tracking recalls those DSP settings automatically – without changing
the DSP controls! For example:
• Select the Clean channel. Set the DSP Mode to “FLNG 1” (slow flange + reverb)
• Select the Overdrive channel, Gain 1. Set the DSP Mode to “CHO 1” (slow chorus + reverb) (the set-
ting for the Clean channel is now saved to memory)
• Select the Overdrive channel, Gain 2. Set the DSP Mode to “T-WAH” (touch wah-wah) (the setting
for the Overdrive channel, Gain 1 is now saved to memory)
• Reselect the Clean channel (the setting for the Overdrive channel, Gain 2 is now saved to memory)
Now when you go back to the Clean channel, even though the DSP Mode was last set to “T-WAH,”
Channel Tracking automatically recalls the last setting for the Clean channel – in this example,
“FLNG 1.” Change to the Overdrive channel, Gain 1, and “CHO 1” is recalled. Change to the
Overdrive channel, Gain 2, and “T-WAH” is recalled. That’s the power of Channel Tracking!
(Note: Even when the power is turned off, Channel Tracking still retains the settings – until you change them!)
3
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GFX-65T Guitar Amplifier with DSP & ChannelTracking
The Front Panel:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18 19
1: INPUT: Use this 1/4” jack to connect your guitar to the amplifier by means of a shielded instrument cable.
OVERDRIVE CHANNEL: A high gain channel giving you sounds from a slight edge to serious overdrive.
2: GAIN 1: Use this control to adjust the amount of light distortion for the Overdrive channel. Gain 1 pro-
duces less intense distortion than Gain 2 (#3) and is active when the Gain switch (#5) is in the out position.
3: GAIN 2: Use this control to adjust the amount of heavy distortion for the Overdrive channel. Gain 2 pro-
duces more intense distortion than Gain 1 (#2) and is active when the Gain switch (#5) is depressed.
4: SHAPE: Use this control to “dial in” the tone for the Overdrive channel when Gain 2 is selected. Rotating
the control counterclockwise enhances the mid frequencies, while rotating the control clockwise enhances
the low and high frequencies. This control is active only when Gain 2 is selected.
5: GAIN SELECT: Use this switch to select which gain control is active for the Overdrive channel. With the
switch in the out position, Gain 1 is selected. When the switch is depressed, Gain 2 is selected.
6: LOW: Use this control to adjust the low frequency level of the Overdrive channel.
7: HIGH: Use this control to adjust the high frequency level of the Overdrive channel.
8: LEVEL: Use this control to adjust the output level of the Overdrive channel.
9: CHANNEL SWITCH: Use this switch to select either channel. With the switch in the out position, the
Clean channel is selected. When the switch is depressed, the Overdrive channel is selected.
CLEAN CHANNEL: A normal gain channel designed to give you crystal clear sounds to medium distortion.
10: LEVEL: Use this control to adjust the output level of the Clean channel.
11: LOW: Use this control to adjust the low frequency level of the Clean channel.
12: MID: Use this control to adjust the midrange frequency level of the Clean channel.
13: HIGH: Use this control to adjust the high frequency level of the Clean channel.
14: DSP LEVEL: Use this control to adjust the amount of digital effect: in its fully counterclockwise posi-
tion the signal will be “dry” (without any effect). As you rotate the control clockwise the amount of effect
increases.
15: DSP MODE: Use this control to select one of the 16 built-in digital effects.Alisting of the effects is shown
on page 3 of this manual.
16: INSERT: Use this jack to connect an external effects device to the amplifier. Use a stereo 1/4” male Y
connector: ring = send, tip = return, sleeve = ground. (Refer to the illustration at the bottom of page 5.)
17: EXTERNAL SPEAKER: Use this jack to connect the amplifier to an external speaker. The internal
speaker is disconnected when this jack is used. The minimum impedance for the external speaker is 4 ohms.
18: ON LED: This LED will illuminate when power is applied to the amplifier.
19: POWER: Use this switch to turn the amplifier on (top of the switch depressed) and off (bottom of the
switch depressed).
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GFX-65T Guitar Amplifier with DSP & ChannelTracking
The Electronic Tuner:
20
20. ELECTRONIC TUNER (top panel): This active electronic tuner is on whenever the amplifier is turned
on, allowing you constant, “real-time” tuning. The bottom row of LEDs indicate which string is being tuned,
while the top row of LEDs are your guiding lights: use the flat and sharp indicators until the center LED illu-
minates. This indicates a properly tuned string.
21: AC LINE CORD (rear panel, not shown): This grounded power cord is to be plugged into a ground-
ed 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.
21: FUSE (rear panel, not shown): 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 serv-
ice information.
22: CHANNEL SELECT / GAIN FOOTSWITCH JACK (rear panel, not shown): Use this jack to con-
nect the stereo 1/4” plug of the supplied three-button footswitch for remote control of channel selection
and gain selection.
23: REVERB FOOTSWITCH JACK (rear panel, not shown): Use this jack to connect the mono 1/4”
plug of the supplied three-button footswitch for remote control of DSP on and off.
CONNECTING TO THE INSERT JACK:
Stereo-to-mono Y-cord:
Y-adapter and 2 cables:
TIP
RING
SLEEVE
RETURN
TIP
to Insert
jack
to Insert
jack
SEND
RING
The Insert jack (#16) allows
you to patch an external
GROUND
SLEEVE
(STP201, 3'
STP202, 6'
STP203, 9')
(YPP117)
effects device into the amplifier
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 two 1/4”
mono signal cables to connect
the effect as shown to the
immediate right.
(1/4"-TO-1/4"
MONO CABLES)
to
to
effect
"IN"
to
to
effect
"IN"
effect
"OUT"
jack
effect
"OUT"
jack
jack
jack
External Effect
External Effect
5
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GFX-65T Guitar Amplifier with DSP & ChannelTracking
Suggested Settings:
6
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GFX-65T Guitar Amplifier with DSP & ChannelTracking
System Block Diagram:
TUNER
A BC D EF G
CLEAN
CHANNEL
CHANNEL
SELECT
BUFFER
INPUT
LEVEL LOW MID HIGH
FLEX WAVE
STAGE
EQ
OVERDRIVE
CHANNEL
SHAPE
ACTIVE
GAIN
LOW HIGH LEVEL
GAIN
SHAPE
MIX
AMP
DSP
INSERT
LEVEL
POWER
AMP
SPEAKER
MODE
DAMPING
CIRCUIT
EXT.
SPEAKER
7
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GFX-65T Guitar Amplifier with DSP & ChannelTracking
GFX-65T TECHNICAL SPECIFICATIONS:
Output Power Rating
Speaker Size and Rating
Input Impedance
65W RMS @ 5% THD, 4Ω, 120 VAC
(1) Custom Design 12”, 4Ω
470kΩ
Total System Gain
Overdrive Ch
Clean Ch
Gain 1: 88dB, all controls @10; Gain 2: 110dB
58dB, all controls @10
Maximum Input Signal Accepted
7 volts peak-to-peak
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
Power Requirements
Size and Weight
120 VAC, 60Hz, 90VA; 100/115VAC, 50/60Hz, 90VA;
100/115VAC, 50/60Hz, 90VA
17-1/2” H x 20” W x 11” D, 34 lbs.
The GFX-65T is covered with a durable charcoal gray 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
#34, Effective 01-01-2001
Manufacturer’s Name:
Production Facility:
Production Facility:
Shipping Facility:
Office 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
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 your local Sales & Services Office or:
SLM Electronics - R & D Engineering
1901 Congressional Drive, St Louis, MO 63146, USA
Tel.: 314-569-0141, Fax: 314-569-0175
@2001 SLM Electronics, a division of St. Louis Music, Inc • 1400 Ferguson Avenue • St. Louis, MO 63301
47-475-05 • 09/01
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