MXR M76 Users Manual

92503019413REVA

M76 STUDIO COMPRESSOR

M76 STUDIO COMPRESSOR

DESCRIPTION

• Classic studio compressor in a
Phase 90-sized pedal

• CHT™ Constant Headroom
Technology for clear,
clean performance

• Ten Gain Reduction status LEDs

• True bypass

CONTROLS

FOOTSWITCH toggles

eect on/bypass (blue LED
indicates on)

INPUT knob controls gain level
of input signal

OUTPUT knob controls overall
eect volume

RATIO sets the degree of
compression, from mild
to extreme

RELEASE knob controls how
quickly your signal returns to its
uncompressed level

GAIN REDUCTION meter
shows gain reduction level and
compressor response time

ATTACK knob controls reaction
time of compression

POWER

The MXR Studio Compressor is
powered by one 9-volt battery
(remove bot tom plate to install),
a 9-volt AC adapter such as the
Dunlop ECB003/ECB003EU, or
the DC Brick™ and Iso-Brick™
power supplies.

-3-5

-1-7-10 -20

GAIN REDUCTION

1

2

8

2

0

4

RELEASE ATTACK

RATIO

OUTPUT

OUT

studio

compressor

INPUT

DIRECTIONS

• Run a cable from your
instrument to the M76’s INPUT
jack and run another cable
from the M76’s OUTPUT jack
to your amplier.

• Set RELEASE, ATTACK,
OUTPUT, and INPUT controls
to 12 o’clock and the RATIO
control to 4.

• Turn the eect on by depressing
the footswitch.

• Rotate INPUT knob clockwise
to increase input gain
reduction—indicated by
number of illuminated GAIN
REDUCTION meter LEDs—or
counterclockwise to decrease it.

• Rotate the OUTPUT knob
clockwise to increase
overall eect volume or
counterclockwise to decrease it.

• Rotate ATTACK knob clockwise
to quicken reaction time of
compressor—indicated by
right-to-left speed of GAIN
REDUCTION meter—or
counterclockwise to slow
it down.

• Rotate RELEASE knob clockwise
to quicken compression
release—indicated by left-to­right speed of GAIN REDUCTION
meter—or counterclockwise to
slow it down.

• Use the RATIO knob to select
compression ratio. The 4 setting
selects a 4:1 ratio, meaning
that if the input level rises 4
decibels above threshold, the
output level will only rise by 1
decibel. Therefore, gain has
been reduced by 3 decibels.
The 8 setting selects an 8:1
compression ratio, 12 selects
12:1, and 20 selects 20:1.

GAIN REDUCTION METER

Short string taps are an easy
way to see the meter display
compressor reaction time and
can be helpful in setting ATTACK
and RELE ASE controls.

SAMPLE SETTINGS

Adjust OU TPUT control as ne eded. Se t INPUT control to ach ieve gain re duction level note d below each setti ng.

IN

STUDIO COMP

RELEASE ATTA CK

OUTPUT

Gain red uction : -6 to -7db

1

2

8

2

0

4

RA TIO

INPUT

MILD LIMITING

RELEASE ATTA CK

OUTPUT

Gain red uction : -1 to -3db

1

2

8

2

0

4

RA TIO

INPUT

HARD LIMITING

RELEASE ATTA CK

OUTPUT

Gain reduction: -10db

1

2

8

2

0

4

RA TIO

INPUT

NASHVILLE
SQUASH

RELEASE ATTA CK

OUTPUT

Gain red uction : -14 to -20db

1

2

8

2

0

4

RA TIO

INPUT

SPECIFICATIONS

Input Impedance 1 MΩ
Output Impedance 600 Ω

Max Input Level +14 dBV
Max Output Level +8.5 dBV

Frequency
Response

±1 dB, 20 Hz

to 20 kHz
Noise Floor* -90 dBV
THD** < 0.5%
Gain 31 dB

Compression Ratio

4:1, 8:1,

12:1, 20:1

Attack Time 20 µs to 800 µs
Release Time 50 ms to 1.1 s

Bypass True Hardwire

Current Draw

LEDs OFF 14 mA
LEDs ON 19 mA

Power Supply 9 volts DC

*A-Weighted , all cont rols at mi d position
**20 dB ga in reduction, 1.1s release s etting,
5 0 Hz to 20 kHz

DUNLOP MANUFACTURING, INC.

P.O. BOX 846 BEN ICIA , CA 94510 U. S.A .

TEL : [phone] FAX : [phone]