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INPUT
1
AC INPUT
100-120V 50/60Hz
10
MB 200 Controls
Input: A standard ¼" input jack to connect active
1
or passive basses using a shielded cord.
-10 dB Pad/Clip indicator: Input attenuator
2
button. This button is generally set to the out
position except in cases where the clip LED
flashes more than occasionally. It may be
necessary 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.
Gain: Sets the preamp gain after the input stage. It
3
is used in conjunction with the input pad to
optimize the amplifier's headroom.
Contour: As part of the amps active equalization
4
the contour control decreases the mid-range
frequencies while boosting low and high
frequencies.
Treble: Boost and cut at 7 kHz +14 dB shelving
5
type. Use this control to add or remove edge and
definition.
Hi-Mid: Boost and cut at 1 kHz +6 dB. A "Q
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Optimized," band pass type, this works on lower
string harmonics and effects the punch of your
sound.
Low-Mid: Boost and cut at 250Hz +6dB/-10 dB.
7
A "Q optimized" band pass type, this works for
main body of your sound.
Bass: Boost and cut a 60Hz +10 dB, shelving
8
type. This is used to control the low end push.
turned up.
Power Switch: Turns the amplifier on and off. In
9
the on position, the ring surrounding the button
will light red during power up then changes to
-10dB
GAIN
CONTOUR
ON
ON
OFF
OFF
2
3
4
DIRECT OUT
11
MB200
TREBLE
HI-MID
5
6
HEADPHONES-1
EQ
PRE
AUX IN
POST
12
13
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.
AC Receptacle:
10
plugs in here.
Balanced
11
balanced output allows a direct connection to a
P.A. system.
Pre/Post EQ Button: This button switches the
12
direct out signal to be before or after the EQ.
Aux In: This 1/8" input for a CD or MP3 player
13
allows the user to monitor an external audio
source.
Headphone/Line out: When switched, this
14
output allows the user to send a direct
(unbalanced) line out to devices with unbalanced
inputs such as personal multitrack recorders. This
connection requires a shielded patch cord.
Unswitched, this headphone jack can be used to
monitor your playing with headphones.
Headphone/Line out switch: This switch toggles
15
the output from headphone to line out.
Speaker: Power amp output to speaker cabinet.
16
Delivers 200w into 4 Ohm loads. Lower
impedances such as 8 Ohms or 16 Ohms and no
load are acceptable. One 4 Ohm speaker and one 8
Ohm speaker is not recommended. This unique
speaker output allows you to use a ¼" plug or the
high current, twist-lock Speakon connector.
6
LOW-MID
BASS
OFF
ON
MB200
7
8
LINE OUT-2
1
2
200W @ 4 OHMS
CLASS 2 WIRING
14
15
The detachable power cord
Direct
Out: This
POWER
9
SPEAKER
16
electronically