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INPUT
GAIN
-10dB
MUTE
OFF
OFF
ON
ON
CLIP
1
2
3
4
Front Panel Features
Input: A standard ¼" input jack to connect active or passive basses using a shielded cord.
1
-10 dB Pad/Clip indicator: Input attenuator button. This button is generally set to the out
2
position except in cases where the clip LED flashes more than occasionally. It may be neces-
sary to "pad" the input if you are using a bass with active electronics or very high output. The
pad button light flashes red when the input is being overdriven. If the -10dB is pressed and the
clip indicator still flashes frequently, reduce the volume on your bass.
Mute: Set this switch to "on" when tuning or unplugging your bass. No signal will be sent to
3
the speakers or the P.A. system. When muted this button turns red.
Gain: Sets the preamp gain after the input stage. It is used in conjunction with the input pad to
4
optimize the amplifier's headroom.
Contour: As part of the amps active equalization the contour control decreases the mid-range
5
frequencies while boosting low and high frequencies.
Treble: Boost and cut at 7 kHz +14 dB shelving type. Use this control to add or remove edge
6
and definition.
Hi-Mid: Boost and cut at 1 kHz +6 dB. A "Q Optimized," band pass type, this works on lower
7
string harmonics and effects the punch of your sound.
Low-Mid: Boost and cut at 250Hz +6dB/-10 dB. A "Q optimized" band pass type, this works
8
for main body of your sound.
Bass: Boost and cut a 60Hz +10 dB, shelving type. This is used to control the low end push.
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Boost: This is a post E.Q. gain stage using G.I.V.E. technology which adds "growl" as it is
10
turned up.
GIVE: This button activates the Boost and Master B volume control.. This can also be
11
activated using the foot switch (included).
Master B: This is the master volume control when boost is activated.
12
Master: This is the master volume control when the boost is inactive.
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Power Switch: Turns the amplifier on and off. In the on position, the ring surrounding the
14
button will light red during power up then changes to blue, indicating the amp is ready for
normal operation. Should the amp experience a fault (over heat or over current) the amp will
mute and the ring will light red until the condition is corrected. This LED turns off when the
power is switched off. This turns the amp off but it does not completely disconnect the power
from the AC mains.
MB² SERIES
CONTOUR
TREBLE
HI-MID
LOW-MID
5
6
7
8
6
BASS
BOOST
MASTER-B
OFF
ON
G.I.V.E
9
10
11
12
POWER
MASTER
OFF
ON
2
MB
500
13
14