Dunlop MXR M83 User Manual

92503013529 revB

M83 BASS CHORUS DELUXE

M83 BASS CHORUS DELUXE

DESCRIPTION

• Chorus and Flanger modes

• Analog bucket brigade technology

• Separate Bass and Treble controls for detailed tone sculpting

• X-OVER mode for increased low end clarity

• Constant Headroom Technology™

POWER

The MXR Bass Chorus Deluxe is powered by one 9 volt battery
(remove bottom plate to install) or a 9 volt power supply such as
the Dunlop ECB003/ECB003E AC adapter.

CONTROLS

BASS knob controls how much low

end is cut or boosted

X-OVER switch engages X-Over

mode, which decreases the amount
of modulation at 100Hz and below
(indicated by yellow LED)

FLANGER switch activates Flanger

mode (indicated by red LED)

TREBLE knob controls how much

high end is cut or boosted

INTENSITY knob controls the
overall amount of modulation in
CHORUS mode and regeneration
in FLANGER mode.

RATE knob controls the speed of

the modulation sweep

WIDTH knob controls the range

7

of the modulation sweep

FOOTSWITCH toggles effect on/

8

bypass (indicated by red LED)

7

8

DIRECTIONS

• Run a cable from your bass to
the Bass Chorus Deluxe’s Input
jack and run another cable from
the Bass Chorus Deluxe’s Output
jack to your amplier.

• Chorus is the default mode.
To use Flanger mode, press the
FLANGER switch. To engage
X-Over mode and decrease
modulation on low
end frequencies, press the
X-OVER switch.

• Start with all controls at
12 o’clock.

• Turn the effect on by depressing
the footswitch.

• Rotate the BASS knob clockwise
to boost low end frequencies or
counterclockwise to cut them.

SAMPLE SETTINGS

• Rotate the TREBLE knob
clockwise to boost high end
frequencies or counterclockwise
to cut them.

• Rotate the INTENSITY knob
clockwise to increase modulation
intensity or counterclockwise to
decrease it.

• Rotate the RATE knob clockwise
to increase modulation speed or
counterclockwise to decrease it.

• Rotate the WIDTH knob
clockwise to increase the
modulation sweep range or
counterclockwise to decrease it.

• An internal switch selects TRS
(tip-ring-sleeve) Stereo Hardwire
bypass or Mono True bypass.
Factory set to Mono True bypass.

FIXATION BLVD.THE PO POJOHN FRANCIS

SPECIFICATIONS

Input Impedance 2 MΩ
Output Impedance
TIP (Mono) 600 Ω
RING (Stereo) 3.3 KΩ

Max Input Level* 1 kHz/+10 dBV
Max Output Level +13 dBV

Frequency Response
20 Hz to 20 kHz/±1 dB

Signal to Noise Ratio* >96 dBV
Tone Controls (Delay Signal Only)
+8 dB, -11 dB, 100 Hz (BASS)

-2 dB, 100 Hz (Center Position BASS)
±14 dB, 10 kHz (TREBLE)
X-OVER Control
+7.5 dB, 20 Hz/+3 dB, 100 Hz (Dry Signal)

-18 dB, 20 Hz/-3 dB, 160 Hz (Delay Signal)

Rate Control 0.1 Hz to 10 Hz

Maximum Delay Time 12 ms

Minimum Delay Time 400 µs

Delay Noise Reduction 2:1 ratio

Bypass
Mono True Hardwire
Stereo Hardwired

Current Draw 30 mA

Power Supply 9 volts DC

* A-weighted, all controls at mid position

DUNLOP MANUFACTURING, INC.

P.O. BOX 846 BENICIA, CA 94510 U.S.A.

TEL: [phone] FAX: [phone]