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Ampeg B15 User Manual

Ampeg B15
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Thank you for selecting the Ampeg B-15R Portaflex Bass Amplifier. Revived from the past and enhanced for the present,
this limited production model offers all of the best features of the 1960’s classic plus more. In order to get the most out of
your new amplifier, please read this user’s guide before its use.
0db and -15dB Input Jacks
Tube Bias Select Switch
Patented “Flip Top” Enclosure
Ultra High / Ultra Low Boosts
Impedance Selector (8/4 Ohms)
Ampeg Vintage 15” Speaker
Input Gain Control
Line Out/Line In jacks
H.F. Horn w/Level control
Three Band EQ
XLR Balanced Line Out Jack
100 watts RMS
Five Position Mid Freq Select
Line Out Level Control
All Tube Design
Master Volume Control
Pre/Post Select Switch
Removable Dolly Board w/Casters
Half-Power Switch
Ground Lift Switch
Proudly Made In America
All Ampeg products are designed for continuous safe operation, as long as common sense is used and steps are taken
to help avoid certain problems. Abiding by the following rules can help prevent damage to your equipment, yourself, and
others.
The unit is equipped with a three-pronged AC power cord. To reduce the risk of electrical shock, NEVER remove
or otherwise attempt to defeat the ground pin of the power cord.
Connect the unit ONLY to a properly grounded AC outlet of the proper voltage for your unit.
Avoid sudden temperature extremes, rain and moisture. Also, avoid sudden and intense impact. (If the unit has
been subjected to any of the preceding abuses, have it looked at by an authorized service center.)
NEVER set the unit on a support that might give out under its weight.
Always keep the total speaker impedance at or above the rated load.
Unplug the unit before cleaning it. NEVER spray liquid cleaners onto the unit. Wipe it with a slightly dampened,
lint-free cloth to remove dirt and film.
Do not use the unit if it has sustained damage to the chassis, controls, or power cord. Refer the unit to an
authorized service center for inspection.
Audio equipment capable of producing high volume levels are also capable of inflicting permanent hearing loss
or damage, if the exposure to such levels is prolonged. Such damage is progressive and irreversible! Consider
using quality hearing protection devices.
INTRODUCTION:
FEATURES:
IMPORTANT SAFEGUARDS AND PRECAUTIONS:

Questions and Answers:

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Ampeg B15 Specifications

Power IconPower
output power rating100 watts @ 5% THD, 8 ohm load, 120VAC
power requirements (120VAC)60Hz, 400VA
power requirements (100VAC)50/60Hz, 400VA
power requirements (230VAC)50/60Hz, 400VA
Speaker Specifications IconSpeaker Specifications
speaker size and ratingAmpeg Vintage 15”, 8 ohm, 150 watt, 2” voice coil, 56 oz magnet
high efficiency piezo tweeter8 ohm, 150 watt (w/network)
crossover frequency3kHz
Control Specifications IconControl Specifications
ultra high switch6dB Boost @ 4kHz
ultra low switch10dB Boost @ 40Hz
bass control25dB Range @ 40Hz
mid control34dB Range @ 200, 400, 900, 1.5k or 2.5kHz
treble control30dB Range @ 4kHz
Input Specifications IconInput Specifications
input impedance (0dB)3M ohms
input impedance (-15dB)47k ohms
max. input signal level accepted (0dB)1V RMS
max. input signal level accepted (-15dB)5.75V RMS
Performance IconPerformance
total system gain50dB w/tones flat, Ultra Low and Ultra High off
signal to noise ratio90dB
Weight and Dimensions IconWeight and Dimensions
dimensions24”W x 16-1/2”D x 24-1/4”H w/amp flipped inside, w/out caster board
height w/amp flipped out, w/out caster board32-7/8” H
height w/caster board37-1/4” H
weight117 lbs

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