GX-120/212+ Guitar Amplifier
ENGLISH
FRONT PANEL - INPUT SECTION
1: Input jack accepts a standard 1/4” phone plug and is suit-
able for any low to line level input source.
LEAD CHANNEL CONTROLS
2: Gain is used to set the level of distortion. The signal gain
setting will be boosted when the Shape active button (#4) is
pressed in.
3: Shape adjusts the general tone. Counter-clockwise empha-
sizes midrange frequencies and clockwise emphasizes low and
high frequencies. The Shape control is only active when the
Shape Active button (#4) is pressed in.
4: Shape Active boosts the gain of the Lead channel and acti-
vates the Shape control (#3).
5: Low adjusts the amount of low frequency tone.
6: High adjusts the amount of high frequency tone or “presence”.
7: Level controls the overall volume and should be used in
conjunction with the Gain control (#2).
CHANNEL SWITCHING CONTROL
8: Lead Channel Indicator LED will be lit when the amplifier is
in the Lead Channel mode.
9: Channel Select Switch is used to select either the Lead or
Rhythm Channel. This switch is defeated if an external
footswitch is used.
10: Rhythm Channel Indicator LED will be lit when the ampli-
fier is in the Rhythm Channel mode.
RHYTHM CHANNEL CONTROLS
11: Volume sets the overall listening level of the Rhythm
Channel. This control is independent of any setting made in
Channel A.
12: Low adjusts the amount of low frequency tone.
13: Mid adjusts the amount of midrange frequency tone.
14: High adjusts the amount of high frequency tone.
15: Bright Switch gives a brighter tone.
REVERB CONTROLS
16: Lead sets the amount of reverb for the Lead Channel.
17: Rhythm sets the amount of reverb for the Rhythm Channel.
18: Insert/Effects Loop jack allows connection of external
effects. Use a stereo 1/4” male Y cord here: ring = send, tip =
return and sleeve is ground for both. See the illustration below
for more information.
19: Ext. Speaker jack allows connection to an extension speak-
er cabinet. This jack is in series with the internal speaker(s).
20: Footswitch jack allows the use of an optional dual
footswitch for remote control of the Channel Select and Shape
Active buttons.
21: Power Indicator LED will be lit when the unit is turned on.
22: Power Switch turns the AC power on and off.
REAR PANEL
23: Power Cord: Your GX-120/212+ is equipped with a heavy-
duty grounded three-wire power cord. Be sure this cord is prop-
erly plugged into a safely wired grounded 120 volt, 60Hz AC
power outlet before use. (If your GX-120/212+ was purchased
outside the United States, refer to the rear panel for power rat-
ings.) For your safety, never attempt to defeat the ground con-
nection on this cord.
24: Fuse protects the amplifier against damages caused from a
faulty AC power source or other problems. If the fuse blows,
replace it ONLY with the same size and type 2.5A 250V normal
blow fuse. If the fuse blows repeatedly check the AC source; if
it’s okay, contact your Crate dealer for service information.
Connecting to the Insert jack:
The Insert/Effects Loop jack (#18) lets you patch external
effects into the amplifier just prior to its power amp stage. Use
Crate’s CYC6MS stereo-to-mono Y-cord or an adapter such as
Crate’s CA11Y and 2 1/4” mono signal cables to connect to the
effect as shown below.
INPUT
1
L
E
A
D
C
H
A
N
N
E
L
R
H
Y
T
H
M
4
6
0
10
2
8
GAIN
2
4
6
0
10
2
8
SHAPE
3
4
6
0
10
2
8
LOW
5
4
6
0
10
2
8
HIGH
6
4
6
0
10
2
8
LEVEL
7
4
6
0
10
2
8
VOLUME
11
4
6
0
10
2
8
LOW
12
9
8
10
4
CHANNEL
SELECT
ACTIVE
TIP
RING
SLEEVE
RETURN
SEND
GROUND
Stereo-to-mono Y-cord:
to Insert jack
(CYC6MS)
(CA11Y)
"Send"
plug:
to
effect
"IN"
"Return"
plug:
from
effect
"OUT"
External Effect
TIP
RING
SLEEVE
Y-adapter and 2 cables:
to Insert jack
to
effect
"IN"
from
effect
"OUT"
Tip =
"Return"
Ring =
"Send"
External Effect
