SAMPLE SETTINGS
M288
BASS OCTAVE DELUXE
POWER
The MXR Bass Octave Deluxe
is powered by one 9-volt battery
(remove bottom plate to install),
a 9-volt AC Adapter such as the
Dunlop ECB003/ECB003EU, or
a DC Brick
™
power supply.
DESCRIPTION
• Two independent
sub-octave voices
• MID+ switch adds
mid range boost
• Constant Headroom
Technology™ for exceptional
headroom and tracking
• Organic analog tone
• True bypass
PLAYHOUSE
SUB ROCK
SUB SLAP
DUNLOP MANUFACTURING, INC.
P.O. BOX 846 BENICIA, CA 94510 U.S.A.
TEL: 1-707-745-2722 FAX: 1-707-745-2658
CONTROLS
MID+ switch adds up to +14dB
of internally adjustable midrange
(blue LED indicates on)
DRY knob controls volume of
clean bass signal
GROWL knob controls
volume of throaty, midrange
sub-octave voice
GIRTH knob controls
volume of deep and smooth
sub-octave voice
5
FOOTSWITCH toggles effect on/
bypass (blue LED indicates on)
DIRECTIONS
• Run a cable from your guitar to
the Bass Octave Deluxe’s INPUT
jack and run another cable
from the Bass Octave Deluxe’s
OUTPUT jack to your amplifier.
• Start with all controls
at 12 o’clock.
• Turn the effect on by depressing
the footswitch.
• Rotate DRY knob clockwise to
increase level of dry signal or
counterclockwise to decrease it.
• Rotate the GROWL knob
clockwise to increase level of
throaty midrange sub-octave
voice or counterclockwise
to decrease it.
• Rotate the GIRTH knob clockwise
to increase level of smooth,
deep sub-octave voice or
counterclockwise to decrease it.
• Depress MID+ switch to boost
midrange. Frequency and level
are both adjustable via internal
slider (up for 850Hz, down for
400Hz) and trim pot (+4dB
when fully clockwise, +14dB
fully counterclockwise).
Please see diagram A
SPECIFICATIONS
Input Impedance
1 MΩ
Output Impedance
< 600 Ω
Noise Floor
*
85 dB
Octave Bandpass
-3 dB, 8 Hz to 46 Hz
Control Range
Dry
-∞ to +2.5 dB
Girth
-∞ to +1 dB
Growl
-∞ to +6 dB
MID+ Switch
**
Gain
+4 dB to +14 dB
Frequency
400 Hz or 850 Hz
Bypass
True Hardwire
Current Draw
14 mA
Power Supply
9 volts DC
*All controls mid position, A-weighted, (VREF = 1 VRMS)
**Internally adjustable
+4dB
+14dB
850Hz
400Hz
DIAGRAM A
INTERIOR VIEW
Factory settings at
+10dB @ 400Hz