Gallien-Krueger 2001RB Owner's Manual - Page 13
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Front Panel Controls
INPUT:
1. Input:
A standard ¼" input jack to plug in active or pas-
sive basses using a shielded cord.
2. -10dB PAD:
Input attenuator button. The button is generally
left out, except in rare cases when the clip LED
flashes. This switch should be pressed if the CLIP
LED stays on continuosly. It may be necessary to
"pad" the input if you are using a bass with active
electronics or very high output.
Clip LED:
LED lights yellow when the input stage is being
over-driven. If -10dB PAD (2) is pressed and clip
LED still stays lit, turn down the volume on your
bass.
Tuning Mute Button:
Set this switch to "ON" (In) when tuning up. This
switch mutes all outputs from the amplifier (speak-
er, direct, and balanced outs) so you can tune up
without sending signal to the audience, speakers,
or the P.A. system. Tuning Mute can be footswitch
controlled by using the GK "RFB-III" footswitch,
which will leave both hands free to tune your
instrument. To control Tuning Mute by footswitch,
the "Tuning Mute" switch on the 2001RB must be
in the "OFF" (OUT) position.
Mute LED:
LED turns on when "Tuning Mute" is switched to
the "ON" position or when activated through the
footswitch.
Channel A/B:
Switches between the Normal and Overdrive chan-
nels. When in the "B" (In) position, the switch
activates "Channel B" (Overdrive). "A" (Out)
position activates "Channel A" (Clean). In or-
der to use the footswitch to control the channel
switching,"Channel A/B" should be in the "A"
(Out) position on the 2001RB.
2001RB & 2001RBP
CHANNEL B:
Channel B LED:
LED turns on when in the "Channel B" (Overdrive)
mode.
3. Gain:
Controls the amount of overdrive in the "B" chan-
nel. At low settings it provides a smooth distorted
sound. At high levels it will provide full saturation
with long sustain.
4. Edge:
Treble control for the Overdrive channel.
5. Bottom:
Bass control for the Overdrive channel.
6. Level-B:
Adjusts the output level of the Overdrive channel.
CHANNEL A:
Channel A LED:
LED turns on when in the "Channel A"
(Clean)mode.
7. Level-A:
Sets preamp gain after the input stage. It is used
in conjunction with the input pad, to optimize the
amplifier's headroom.
VOICING FILTERS:
8. 4/5 String Bass:
Switching this button to the "ON' position, voices
the pre-amp for basses with "B" tuning (5 string
bass). Leaving it in the "OUT" position will voice
the amp like the 800RB, for a four string bass.
9. Contour:
Drops the mid-range frequencies while boosting
lows & highs.
10. Presence:
This adds edge and definition to higher frequen-
cies.
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