Crate Amplifiers fxt120 User Manual

FXT120  
FXT120  
Guitar Amplifier with  
Digital Signal Processing  
and Channel Tracking  
User’s Guide  
FXT120Guitar Amp with DSP & Channel Tracking  
The Digital Signal Processor:  
The FXT120’s Digital Signal Processor provides 16 exciting digital effects. Use the DSP Selector con-  
trol to choose the desired effect, then use the DSP Level control to mix in the desired amount of effect.  
The effects are described below:  
FLNG 1  
FLNG 2  
CHO 1  
slow deep flange + reverb  
flange + reverb + delay  
slow tremolo chorus + reverb  
chorus + reverb + delay  
CHO 2  
RTRY  
OCTV DOWN  
T-WAH  
simulated rotary speaker effect  
adds a signal one octave lower than input  
touch sensitive wah-wah effect  
inverse wah-wah effect  
I-WAH  
DOUBLER  
REV (1)  
REV (2)  
REV (3)  
REV (4)  
DLY (1)  
DLY (2)  
DLY (3)  
simulated second track, slightly out of sync  
small room reverb  
medium room reverb  
large room reverb  
concert hall reverb  
short slapback + small room reverb  
medium delay + plate reverb  
long delay + large room reverb  
Channel Tracking:  
The FXT120 gives you the power of Channel Tracking! Once you select a DSP setting for each chan-  
nel, Channel Tracking recalls those DSP setting automatically – without changing the DSP controls!  
For example:  
Select the Clean channel. Set the DSP Selector to “FLNG 1” (slow flange + reverb)  
Select the Overdrive channel, Gain 1. Set the DSP Selector to “CHO 1” (slow chorus + reverb) (the setting  
for the Clean channel is now saved to memory)  
Select the Overdrive channel, Gain 2. Set the DSP Selector 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 Selector 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 chan-  
nel, 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
FXT120Guitar Amp with DSP & Channel Tracking  
The Front Panel:  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
1: INPUT: Use this 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 produces less  
intense distortion than Gain 2 (#3) and is active when the Gain Select 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 produces  
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 only active 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. When a footswitch is  
connected to the Channel / Gain Select Footswitch jack (#21), this switch is inactive and the Gain Select function  
is controlled by the footswitch (see #21).  
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 SELECT: 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. The adjacent LEDs illumi-  
nate to indicate which channel is active. When a footswitch is connected to the Channel / Gain Select Footswitch  
jack (#21), this switch is inactive and the Channel Select function is controlled by the footswitch (see #21).  
CLEAN CHANNEL: A normal gain channel designed to give you crystal clear sounds to medium distortion.  
10: VOL: 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 counter clockwise position the  
signal will be “dry” (without any effect). As you rotate the control clockwise the amount of effect increases.  
15: DSP SELECTOR: Use this control to select one of the 16 built-in digital effects. A listing of the effects is shown  
on page 3 of this user’s guide.  
16: INSERT: Use this jack to connect an external effects device to the amplifier. Use a stereo 1/4” male Y con-  
nector: 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. This jack is wired in  
series with the internal speakers, which remain active even when an external speaker is connected.  
4
FXT120Guitar Amp with DSP & Channel Tracking  
16  
17  
18  
19  
18: 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.  
19: ELECTRONIC TUNER (top panel): The electronic tuner is active whenever the amplifier is truned on, pro-  
viding constant, “real time” tuning. The bottom row of LEDs indicate which note (string) is being tuned. The top  
row of LEDs provides directional queues to faciltate quick and precise tuning of your instrument. The indicated  
note (string) is properly tuned when only the center LED is illuminated.  
The Rear Panel (not shown):  
20: 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 the fuse continues to  
fail, check the AC source – if the source is okay, contact your Crate dealer for service information.  
21: CHANNEL / GAIN SELECT FOOTSWITCH: 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 Overdrive Gain 1 and Gain 2. When a footswitch is  
used, the front panel Gain and Channel Select switches (#5, #9) are rendered ineffectual.  
22: DSP FOOTSWITCH: 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 DSP on and off.  
23: AC LINE CORD: This grounded power cord is to be plugged into a grounded power outlet, wired to cur-  
rent 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.  
Stereo-to-mono Y-cord:  
Y-adapter and 2 cables:  
Connecting to the Insert jack:  
TIP  
RETURN  
TIP  
RING  
to Insert  
jack  
to Insert  
jack  
RING  
SLEEVE  
SEND  
GROUND  
SLEEVE  
(STP201, 3'  
STP202, 6'  
STP203, 9')  
The Insert jack (#16) allows you to  
patch an external 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.  
(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  
5
FXT120Guitar Amp with DSP & Channel Tracking  
Suggested Settings:  
Sweet 'n Clean:  
OUT  
OUT  
IN  
Just a 'Lil Nasty:  
Politely Gritty:  
OUT  
Octave Down 'n Dirty:  
OUT  
IN  
Wah Full House:  
OUT  
IN  
Mean & Obscene:  
IN  
IN  
6
FXT120Guitar Amp with DSP & Channel Tracking  
System Block Diagram:  
TUNER  
A BC D EF G  
CHANNEL  
SELECT  
CLEAN  
CHANNEL  
BUFFER  
INPUT  
EQ  
VOL LOW MID HIGH  
FLEX WAVE  
STAGE  
EQ  
OVERDRIVE  
CHANNEL  
SHAPE  
ACTIVE  
GAIN  
LOW HIGH LEVEL  
GAIN  
SHAPE  
MIX  
AMP  
DSP  
INSERT  
LEVEL  
POWER  
AMP  
SPEAKERS  
MODE  
EXT.  
SPEAKER  
DAMPING  
CIRCUIT  
7
FXT120Guitar Amp with DSP & Channel Tracking  
FXT120 TECHNICAL SPECIFICATIONS:  
Output Power Rating  
Speaker Size and Rating  
Input Impedance  
120W RMS @ 5% THD, 4, 120 VAC  
(2) Custom Design 12”, 8Ω  
470kΩ  
Total System Gain  
Solo Ch  
Overdrive 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  
O.D. Channel  
Shape Control  
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, 95VA  
100/115VAC, 50/60Hz, 95VA  
230VAC, 50/60Hz, 95VA  
Size and Weight  
21” H x 26-1/2” W x 11” D, 50 lbs.  
The FXT120 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  
#34, Effective 01-01-2001  
Manufacturer’s Name:  
Production Facility:  
SLM Electronics  
1901 Congressional 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 the following Standards:  
Safety:  
EMC:  
EN60065, E60065, C22.2, UL6500 and/or UL813  
Directive 89/336/EEC, EN55103, EN55013, EN61000,  
and/or FCC 47CFR 15B clA  
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  
47-476-09 • 012904  

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