GTD120
212
Three-Channel Guitar Amplifier
with DSP and Channel Tracking
Owner’s Manual
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:
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120 watts rms power output
2 x 12" speaker
Three-Channel Operation
—High Gain Channel
—Overdrive Channel
—Clean Channel
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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
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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.
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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.
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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
effect
"IN"
effect
"OUT"
jack
effect
"OUT"
jack
jack
jack
External Effect
External Effect
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GTD120/212 Guitar Amplifier w/DSP and Channel Tracking
The DSP Section
Normal Signal Path
Chorus > Delay > Reverb
Echo/Eff Signal Path
Delay > Chorus > Reverb
19
20
21
19. REVERB: Use this control to adjust
the amount of digital reverb effect. In its
fully counterclockwise position, the signal
will be “dry” (without reverb). As you rotate
this control clockwise, the amount of reverb
increases.
20. CHORUS: Use this control to select the
type of digital chorus effect. In its fully coun-
terclockwise position, the signal will be “dry”
(without chorus). As you rotate the control
clockwise, you can select from three chorus
settings, three flanger settings, or three
phaser settings. The chart below describes
these effects.
21. DELAY: Use this control to select
the type of digital delay effect. In its fully
counterclockwise position, the signal will
be “dry” (without chorus). As you rotate the
control clockwise, you can select from three
slap settings, three echo settings, or three
echo with effect settings. The chart below
describes these effects.
Effect Setting
Chorus 1
Chorus 2
Chorus 3
Flanger 1
Flanger 2
Flanger 3
Phaser 1
Phaser 2
Phaser 3
Slap 1
Description
Chorus with low depth
Chorus with medium depth
Chorus with high depth
Flanger with low depth
Flanger with medium depth
Flanger with high depth
Phaser with low feedback
Phaser with medium feedback
Phaser with high feedback
Single delay with low level
Single delay with medium level
Single delay with high level
Echo with low level
Slap 2
Slap 3
Echo 1
Echo 2
Echo with medium level
Echo 3
Echo with high level
Echo/Eff 1
Echo/Eff 2
Echo/Eff 3
Echo with low level before effect
Echo with medium level before effect
Echo with high level before effect
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GTD120/212 Guitar Amplifier w/DSP and Channel Tracking
Using the Footswitch with the DSP
The Crate three-button footswitch supplied with the GTD120/212 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 off, a second DSP preset may be stored and recalled for each chan-
nel — “DSP Bank B.”
Note: DSP Bank B presets are only accessible when the footswich is connected to the ampli-
fier. When the footswitch is not connected, only DSP Bank A is accessible.
“LEFT” jack
“RIGHT” jack
Switch #3:
LED ON = DSP BANK A
LED OFF = DSP BANK B
Switch #2:
LED ON = HIGH GAIN CH/OVERDRIVE CH
LED OFF = CLEAN CH
Switch #1:
LED ON = HIGH GAIN CH
LED OFF = OVERDRIVE CH
[only when Switch #2 is activated (LED ON)]
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GTD120/212 Guitar Amplifier w/DSP and Channel Tracking
Suggested Settings
Sweet ‘n Clean:
Just a ‘Lil Nasty:
Politely Gritty:
OUT
AS
DESIRED
OUT
IN
AS
DESIRED
OUT
IN
AS
DESIRED
Down ‘n Dirty:
OUT
IN
AS
DESIRED
Mean & Obscene:
IN
IN
AS
DESIRED
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GTD120/212 Guitar Amplifier w/DSP and Channel Tracking
System Block Diagram
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GTD120/212 Guitar Amplifier w/DSP and Channel Tracking
This equipment has been tested and found to comply with the limits for a Class B digital device, pur-
suant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio
or television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
•
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications to this device not expressly approved by LOUD Technologies Inc. could void
the user's authority to operate the equipment under FCC rules.
Declaration Of Conformity
Manufacturer:
LOUD Technologies Inc.
16220 Wood-Red Rd. NE
Woodinville, WA 98072, USA
Product Name:
Product Type:
Complies with Standards:
LVD:
Crate GTD120/212
Audio Amplifier
92/31/EEC, 93/68/EEC, & 73/23/EWG
EN60065
EN55013, EN55020, EN55022, EN55103, EN61000-3-2,
& EN61000-3-3
Safety:
EMC:
The official Declaration of Conformity for this product is kept on file at:
LOUD Technologies Inc., 16220 Wood-Red Road NE, Woodinville, WA 98072 • Tel: 1-866-858-5832
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GTD120/212 Guitar Amplifier w/DSP and Channel Tracking
GTD120/212 TECHNICAL SPECIFICATIONS:
Output Power Rating
120W rms @ 5% THD, 8Ω, 120 VAC
Gain
High Gain Channel
Overdrive Ch
Clean Ch
110 dB, all controls @ 10
88 dB, all controls @ 10
58 dB, all controls @ 10
CD Input
29 dB
Maximum Input Signal Accepted
Input Impedance
2.5 volts rms @ 400 Hz
470k ohm
High Gain Channel
Overdrive Channel
Shape Control
Proprietary Circuit
Low
Mid
High
20 dB range @ 80 Hz
15 dB range @ 1 kHz
20 dB range @ 10 kHz
Clean Channel
Low
Mid
High
36 dB range @ 80 Hz
15 dB range @ 800 Hz
40 dB range @ 10 kHz
Speaker Size and Rating
Power Requirements
2 x 12" (parallel) Crate Custom Design, 4 ohm total
120 VAC, 60 Hz, 95 VA
100/115 VAC, 50/60 Hz, 95 VA
230/240 VAC, 50/60 Hz, 95 VA
Size (H x W x D)
Weight
20.0 in/50.8 cm x 26.25 in/66.8 cm x
13.0 in/33.0 cm
48.7 lb/22.08 kg
The GTD120/212 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.
“Crate” is a registered trademark of LOUD Technologies Inc. All other brand names mentioned are trademarks or
registered trademarks of their respective holders and are hereby acknowledged.
Service Information:
If you are having a problem with your GTD120/212, you can go to our website
(www.crateamps.com) and click on Support for service information, or call 1-800-898-3211
during business hours (7 am to 5 pm PST, Monday-Friday). If you are outside of the U.S.,
contact your local distributor for technical support and service.
@2006 LOUD Technologies Inc.
16220 Wood-Red Road NE • Woodinville, WA 98072
Part No. 0021168 Rev. A 09/06
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