MXR M306 Poly Blue Octave User Manual
- June 6, 2024
- MXR
Table of Contents
M306
Poly Blue Octave
The MXR Poly Blue Octave brings modern and classic pitch-shifting styles together with fuzz and modulation to create the ultimate octave pedal for stone crafters and sonic seekers.
External Controls
- EXP jack allows the use of an expression pedal or tap switch to control certain parameters
- FOOTSWITCH toggles effect on/bypass (white LED indicates on)
- MOD knob adjusts the rate of modulation effect
- The DRY knob adjusts the output level of the dry signal
- FUZZ switch toggles fuzz effect on/off (blue LED indicates on)
- SUB-1 knob adjusts the output level of signal shifted one octave down
- MONO switch toggles between monophonic and polyphonic pitch-shifting modes (red LED indicates monophonic mode)
- SUB-2 knob adjusts the output level of signal shifted two octaves down
- OCT+1 knob adjusts the output level of signal shifted one octave up
- OCT+2 knob adjusts the output level of signal shifted two octaves up
Basic Operation
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Run a cable from your guitar to the M306’s INPUT jack and run another cable from the M306’s OUTPUT jack to your amplifier.
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Start with all controls at 12 o’clock.
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Turn the effect on by depressing the footswitch.
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Rotate DRY knob clockwise to increase the output level of dry signal or counterclockwise to decrease it.
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Rotate SUB-1 knob clockwise to increase the output level of SUB-1 signal or counterclockwise to decrease it.
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Rotate SUB-2 clockwise to increase the output level of the SUB-2 signal or counterclockwise to decrease it.
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Rotate OCT+1 knob clockwise to increase the output level of OCT+1 signal or counterclockwise to decrease it.
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Rotate OCT+2 knob clockwise to increase the intensity of overdrive or counterclockwise to decrease it.
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Rotate the MOD knob clockwise to increase the rate of modulation or counterclockwise to decrease it. To remove modulation from the signal, rotate the MOD knob fully counterclockwise. The sound of the modulation is dependent on the pitch-shifting setting as determined by the MONO switch: in the default polyphonic mode, the
modulation circuit simulates the Leslie speaker effect, while in monophonic mode, it sounds similar to the MXR Phase 90. -
Push the FUZZ switch to add fuzz to all five signals. Blue LED indicates fuzz is active. To adjust the volume level of the fuzz effect, press and hold the FUZZ switch
until the blue LED flashes. Use the DRY knob to set your desired fuzz volume, and then push the FUZZ switch again to save the setting. -
Push the MONO switch to toggle from polyphonic pitch shifting—which can be applied to single notes as well as full chords—to monophonic pitch shifting, which focuses on a single note at a time. When in monophonic mode, the OCT+1 and OCT+2 signals will resemble the sound of an Octavio Fuzz with the intensity
dialed all the way back. Red LED indicates monophonic mode is active.
Power
The MXR® Poly Blue Octave is powered by one 9-volt battery (remove the bottom plate to install), a 9-volt AC adapter such as the Dunlop ECB003/ECB003EU, or an MXR Brick™ Series power supply.
Advanced Operation
ADJUST VOLUME LEVEL OF FUZZ EFFECT
To adjust the volume level of the fuzz effect, press and hold the FUZZ switch until the blue LED flashes. Use the DRY knob to set your desired fuzz volume, and then push the FUZZ switch again to save the setting.
USE AN EXPRESSION PEDAL TO BLEND BETWEEN TWO SETTING CONFIGURATIONS
An expression pedal such as the DVP5 Volume (X)TM8 Pedal can be used to toggle and sweep between two different setting configurations. To set it up, run a TRS cable from the expression pedal’s OUTPUT Jack to the M306’s EXP jack. Set rocker to its heel down position. Adjust knobs and switches as desired. Move rocker to its toe-down position. Adjust knobs and switches as desired to a different setting configuration. Moving the rocker back and forth will transition smoothly between the sounds created by the two settings.
USE A TAP SWITCH TO CONTROL FUZZ AND MONO SWITCHES
An off-board tap switch such as the M199 MXR Tap Tempo Switch can be used to control the FUZZ switch and MONO switches. To set it up, run a standard patch cable from the tap switch’s OUTPUT jack to the M306’s EXP Jack. To engage fuzz, press the tap switch once; to disengage fuzz, press the tap switch twice. To engage monophonic phase shifting, double-tap the tap switch; double- tap again to disengage.
| Input Impedance | 1MΩ |
|---|---|
| Output Impedance | 100 Ω |
| Maximum Input Level | +5 dB |
| Noise Floor | -97 dB |
| Current Draw | 265 mA |
| Power Supply | 9 volts DC |
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Unauthorized changes or modifications to this product could void the user’s authority to operate the equipment.
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M306
Poly Blue Octave