Owner’s Manual
Scrambler Bass Overdrive IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with a dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9.
Scrambler Bass Overdrive CAUTION: Changes or modifications to this device not expressly approved by Yamaha Guitar Group, Inc. could void the user’s authority to operate the equipment under FCC rules. This apparatus does not exceed the Class A/Class B (whichever is applicable) limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian Department of Communications. Exposure to extremely high noise levels may cause permanent hearing loss.
Scrambler Bass Overdrive TABLE OF CONTENTS Important Safety Instructions...............................................2-3 Table Of Contents..................................................................4 Introduction...........................................................................4 Features................................................................................4 Scrambler Bass Overdrive Top Panel Features.........................
Scrambler Bass Overdrive Scrambler Bass Overdrive Top Panel Features 4 3. ON/OFF LED: This LED illuminates purple when the pedal is engaged. 4. DRIVE: Use this to adjust the amount of Bass Scrambler™ overdrive effect. Rotate the control clockwise for a more overdriven sound, or counter-clockwise for a less overdriven sound. 5. BLEND: Use this to blend the Bass Scrambler™ affected signal with the clean unaffected signal. 6. TREBLE: Use this to adjust the high frequency level.
Scrambler Bass Overdrive Scrambler Bass Overdrive Rear and Bottom Panel Features 9. POWER CONNECTOR: This is where to connect the optional power supply. Before plugging in the power supply, make sure that you are using the correct one for your country (see below). NOTE: A power supply may be purchased through your favorite Ampeg Dealer.
Scrambler Bass Overdrive Scrambler Bass Overdrive Bottom Panel Features 10. 9V BATTERY The Scrambler Bass Overdrive may be powered by 9V battery instead of using a power supply. As seen in the illustration below, it tucks in nicely inside a compartment of the circuit board next to the edge of the pedal. NOTE: Unplug the input cable when not in use, as the 9V battery will drain (and eventually die). NOTE: When replacing the bottom of the pedal, line up the rectangular foam piece over the battery.
Scrambler Bass Overdrive Scrambler Bass Overdrive Suggested Settings * Volume to taste 8
INPUT 15 dB PAD [INTERNAL] FET PREAMP DRIVE TRUE BYPASS BLEND TREBLE VOLUME OUTPUT Scrambler Bass Overdrive Scrambler Bass Overdrive Block Diagram
Scrambler Bass Overdrive SCRAMBLER BASS OVERDRIVE TECHNICAL SPECIFICATIONS Signal to Noise Ratio (50 Hz @ 300 mV RMS) >85 dB Maximum Gain +18 dB Tone Controls Treble: Impedances Input: 1 M @ NORMAL, 83 k Output: 120 Power Requirements Internal: 9 V Battery External: 9 VDC, ≥20 mA Size (H x W x D) 2.2 in x 2.6 in x 4.5 in 56 mm x 66 mm x 114 mm Weight 0.6 lb / 0.
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