Ampeg Analog Bass Preamp Owner`s Manual

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Bottom Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Suggested Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Technical Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Warranty and Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

What’s in the Box

Classic Analog Bass Preamp Pedal, Quick Start Guide.

Introduction

The Ampeg Classic Analog Bass Preamp pedal is like having a choice of Ampeg amps
right on your pedal board. Dial in a wide range of authentic Ampeg tones with the 3-band

tone stack and highly exible Ultra-Hi and Ultra-Lo circuits. It’s the most aordable way

into the pure analog bass tone of Ampeg.

Like all Ampeg products, your Classic Analog Bass Preamp pedal is designed by
musicians and built using only the best of components. Each pedal is tested to conrm
that it meets our specications, and we believe that this pedal is the absolute best that it

can be.

In order to get the most out of your new pedal, please fully read this Owner’s Manual,
as well as the Important Safety Instructions included with your pedal, before you begin
playing. Best of luck in all of your musical endeavors!

And thank you for choosing Ampeg.

Features

• Delivers a wide range of authentic Ampeg tones

• Classic 3-band tone stack, plus volume

• Ultra-Hi and Ultra-Lo circuits for tonal exibility

• True bypass, analog design with incredible signal-to-noise ratio

• Roadworthy, all-metal chassis construction

• 9V DC supply or battery capable (not included)

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Top Panel Features

54

6

87

9

110

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2

1. INPUT: The signal output from an

instrument (active or passive) may be

connected to this 1/4" Input by means

of an unbalanced, shielded instrument
cable.

NOTE: There is a –15 dB Pad Jumper
located inside of the pedal. Details on
switching the jumper may be found on
page 5.

NOTE: Unplug the input cable when not

in use, as the 9V battery will drain (and
eventually die). Details on replacing the
battery may be found on page 5.

2. CLASSIC PREAMP SWITCH:
Engage this switch to activate the
Classic Preamp pedal. This pedal is
true bypass, meaning the signal will
pass through from input to output, with
no circuitry in between, when the switch
is disengaged.

3. ON/OFF LED: This LED illuminates

purple when the pedal is engaged.

4. VOLUME: Use this to control the overall
output level. Use it wisely and turn it

down when making connections or

trying something new. Unity is at 12:00.

NOTE: The Volume control is active
only when the pedal is engaged.

Classic Analog Bass Preamp

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 at at the

center position.

6. ULTRA LO: This switch, when
engaged, enhances the amount of low-

end 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.
The midrange frequency output is at at

the center position.
Rotate the control counter-clockwise

for a “contoured” sound, (more distant,
less midrange output) or clockwise for a
sound that really cuts through.

8. TREBLE: Use this to adjust the high
frequency level. This provides up to 10
dB of boost, or 10 dB of cut, at 4 kHz.
The high frequency output is at at the

center position.

9. ULTRA HI: This switch, when engaged,
enhances the amount of high-end

output by 7 dB at 8 kHz.

10. OUTPUT: Typically, this 1/4" Output
jack connects to the input of an

external power amplier – or powered

loudspeakers, as long as they have their
own input controls to adjust the volume
level – by means of an unbalanced,
shielded, instrument cable.

However, it may alternatively be
connected to an external mixer,
recorder, or interface. In this way, you

do not have to mic the speaker cabinet

in order to add it to the main mix or

to record. The level of the signal is

aected by the Volume control when

pedal is engaged.

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