Owner’s Manual
Classic Analog Bass Preamp TABLE OF CONTENTS What’s in the Box ������������������������������������������������������������������������������� 2 Introduction ����������������������������������������������������������������������������������������� 2 Features ����������������������������������������������������������������������������������������������� 2 Top Panel Features ����������������������������������������������������������������������������� 3 Rear and Bottom Panel Features �����������������������
Classic Analog Bass Preamp Top Panel Features 4 5. BASS: Use this to adjust the low frequency level. This provides up to 7 dB of boost, or 20 dB of cut, at 40 Hz. The low frequency output is flat at the center position. 6. ULTRA LO: This switch, when engaged, enhances the amount of lowend output with a 2 dB boost at 40 Hz, and –10 dB cut at 500 Hz. 7. MID: Use this to adjust the midrange frequency level. This provides up to 5 dB of boost, or 11 dB of cut, at 500 Hz.
Classic Analog Bass Preamp Rear and Bottom Panel Features BOTTOM PANEL ACCESS 11 11. POWER CONNECTOR: This is where to connect the optional power supply. NOTE: Before plugging in the power supply, make sure that you are using the correct model power supply for this product. Failure to do so may result in damage to your unit and void your warranty. A DC-1G Power Supply may be purchased from an Ampeg Dealer, or you may purchase one directly from the Ampeg Online Shop, at shop.ampeg.com.
Classic Analog Bass Preamp Bottom Panel Features NOTE: If you are experiencing excessive distortion (distortion begins at approximately 0.5V RMS) then you might want to utilize the -15 dB Pad by moving the jumper to Pins 2-3. NOTE: When reattaching the bottom plate to the pedal, line up the rectangular foam piece over the battery. Turn the screws clockwise to affix to the bottom to the pedal. NORMAL PIN1>> 13 –15dB 12 12.
Classic Analog Bass Preamp Suggested Settings Set Volume control to taste = Switch engaged (down) = Switch disengaged (up) Slappin’ Da Bass Rock Reggae Motown Classic Dino Pick/Grind 6
INPUT 15 dB PAD [INTERNAL] VOLUME ULTRA LO ULTRA HI TONE CONTROL CIRCUITRY 7 TRUE BYPASS MIDRANGE BASS TREBLE OUTPUT Classic Analog Bass Preamp Block Diagram
Classic Analog Bass Preamp Technical Specifications Signal to Noise Ratio (50 Hz @ 300mV RMS) 75 dB Maximum Gain +18 dB Tone Controls Bass: Mid: Treble: Ultra Hi: Ultra Lo: Impedances Input: 1 M @ Normal, 83 k w/–15 dB Pad Output: 120 Power Requirements Internal: 9V Battery External: 9VDC, ≥20 mA, center negative 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.
