M77 modified overdrive – Dunlop Manufacturing M77 User Manual
Page 2
SAMPLE SETTINGS
M77 MODIFIED OVERDRIVE
DESCRIPTION
• Classic overdrive circuit hot-
rodded for added versatility
• Adds sustain and gain without
coloring your guitar’s tone
• 100HZ knob allows a more
focused EQ when cut or a
beefier tone when boosted
• BUMP switch engages an
alternate EQ voicing that
boosts lows and mids
• True bypass
DIRECTIONS
• Run a cable from your guitar to
the Modified O.D.’s INPUT jack
and run another cable from the
Modified O.D.’s OUTPUT jack
to your amplifier.
• Set all controls to their
12 o’clock position.
• Turn the effect on by
depressing the footswitch.
• Rotate the GAIN knob clockwise
to increase the amount of
overdrive or counterclockwise
to decrease it.
SPECIFICATIONS
Input Impedance
1 MΩ
Output Impedance
<7.5 kΩ
Noise Floor*
>87 dB
Tone Control
± 8 dB at 2.7 KHz
100HZ Control
± 24 dB at 100 Hz
Bump Button +6 dB low ~ mid boost
-3 dB at 540 kHz
Gain Control
± 25 dB range at 100 Hz
Bypass
True Hardwire
Power Draw
<4 mA
Power Supply
9 volt DC
0 dBV = 1Vrms
*A Weighted, all controls at mid position.
• Rotate the OUTPUT knob
clockwise to increase
overall effect volume or
counterclockwise to decrease it.
• Rotate the 100HZ knob clockwise
to increase the low end for a
thicker tone or counterclockwise
for a more focused sound. At 12
o’clock, the frequency is flat.
• Engage the BUMP switch for an
alternate EQ voicing that provides
a low and mid frequency boost.
NASHVILLE CAT
T-STYLE/ 1X12” REVERB
COMBO/ CLEAN
RAWK GAWD
LP/ UK STACK/ ON 11
TEXAS GUNSLINGER
S-STYLE/ 4X10” REVERB
COMBO/ PUSHED
CONTROLS
TONE knob shapes overall EQ
100HZ knob cuts/ boosts
at 100 Hz
BUMP switch boosts lows and
mids (indicated by blue LED)
OUTPUT knob controls
overall effect volume
GAIN knob controls the amount
of overdrive
6
FOOTSWITCH toggles
effect on/bypass (red LED
indicates on)
POWER
The MXR Custom Badass
™
Modified O.D. is powered by one
9-volt battery (remove bottom plate
to install), a 9-volt AC adapter such
as the Dunlop ECB003/ECB003E,
or a DC Brick
™
power supply.
DUNLOP MANUFACTURING, INC.
P.O. BOX 846 BENICIA, CA 94510 U.S.A.
TEL: 1-707-745-2722 FAX: 1-707-745-2658