mxr M103 Blue Box Manual 

DESCRIPTION • Fuzzes up your guitar signal, then duplicates it two octaves down • Blend control sets mix of wet and dry signals CONTROLS OUTPUT controls overall volume of effect BLEND controls mix or wet and dry signals FOOTSWITCH toggles effect on/bypass (red LED indicates on) DIRECTIONS • Run a cable from your guitar to the Blue Box’s INPUT jack and run another cable from the Blue Box’s OUTPUT jack to your amplifier. • Turn the OUTPUT knob clockwise to BOOST the effect’s overall volume. SPECIFICATIONS Input Impedance 1 MΩ Output Impedance <20 kΩ Input Sensitivity Level -56 dBV Nominal Input Level -22 dBV Max Output Level -5 dBV Noise Floor* >100 dBV Bypass Hardwire Current Draw Effect On 4 mA Effect Off 1.5 mA Power Supply 9 volts DC 0 dBV = 1Vrms *All controls @ full clock wise position. A-weighted • Rotate the OUTPUT knob to increase overall volume of effect or counterclockwise to decrease it. • Rotate BLEND knob clockwise to increase amount of sub-octave fuzz or counterclockwise to decrease it. 7th ARMY FAT FUZZ DEE PHUNK MAG-LITE DROOLIN’ IN THE RAIN POWER The MXR Blue Box 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