Ampeg Classic User Manual

6
Classic Analog Bass Preamp
Classic Analog Bass Preamp Rear and Bottom Panel Features
11. 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 at
your local Ampeg Dealer or ordered directly
from LOUD Technologies Inc. Be sure to ask
for part number:
2045758-00: United States
2045758-01: Europe
2045758-02: Japan
2045758-03: United Kingdom
2045758-04: Australia
2045758-05: China
2045758-06: Brazil
11
BOTTOM PANEL ACCESS
A –15 dB pad jumper is located inside
the bottom of the pedal. This is also
where the 9V battery is housed.
Removing the bottom is easy. Simply
start by placing the pedal top down
on a soft, dry cloth.
Remove each of the four screws
by turning them counter-clockwise.
Be sure to keep them in a safe place
as you will need them again!

Ampeg Classic Specifications

Audio Specifications

signal to noise ratio	75 dB
maximum gain	+18 dB
bass tone control	+7/–20 dB @ 40 Hz
mid tone control	+5/–11 dB @ 500 Hz
treble tone control	+10/–10 dB @ 4 kHz
ultra hi	+7 dB @ 8 kHz
ultra lo	+2 dB @ 40 Hz / –10 dB @ 500 Hz

Impedance

input impedance	1 M @ Normal, 83 k w/–15 dB Pad
output impedance	120

Power Requirements

internal power	9V Battery
external power	9VDC, ≥20 mA, center negative

Weight and Dimensions

size (H x W x D)	2.2 in x 2.6 in x 4.5 in
size (H x W x D) metric	56 mm x 66 mm x 114 mm
weight	0.6 lb / 0.3 kg