Ampeg B-15 Musical Instrument Amplifier User Manual


 
Heritage B-15 Bass Amplifier
4
Heritage B-15 Bass Amplifier
Introduction
Hand-built and hand-wired in the U.S., the
Ampeg Heritage B-15 delivers legendary
tone in a design that truly lives up to the
iconic standard set by inventor Jess Oliver
50 years ago. The Heritage B-15 features
circuit paths of both a 1964 and 1966 B-15,
including classic Baxandall EQ controls and
premium 6SL7 octal preamp tubes along
with a bias switch, recreating each years’
distinctive bias methodology.
The extremely high-quality flip-top cabinet
features the legendary double-baffle design
and houses a highly-researched, custom-
designed 15” Eminence driver. The Heritage
B-15 is no mere tribute; it meets and
exceeds the performance, look and tone of
the legendary original, down to each and
every component.
In order to get the most out of the
Heritage B-15, please read this manual
before you begin playing.
And thank you for choosing Ampeg.
Features:
• Hand-builtintheU.S.A.
• Limitededitionproduction
•Only50unitsavailable
•Numberedandmatchedheads/cabs
• ClassicAmpegflip-topdesign
•Chrome-platedchassis
•RuggedcabinetsmadewithBaltic
birch and poplar
•Legendarydouble-bafflecabinetdesign
delivers classic tone
• Twodistinct,hand-wiredpreampcircuits
•Channel1–1964(B-15NC)
•Channel2–1966(B-15NF)
• Selectablebiasmodesforultimatetone
control
•1964–cathodebias(25W@4or8
)
•1966–fixedbias(30W@4or8
)
• High-gradenewandN.O.S.tubes
•Preamp–3x6SL7
(N.O.S. JAN Philips ECG 6188)
•Rectifier–1x5AR4(GZ34S)
•Poweramp–2x6L6GC
• LegendaryBaxandallbass/trebletone
stack on both channels
• Dualinputsperchannel(0dBand–15dB)
• Custom-designed15”US-madeEminence
driver
•4”voicecoil
•109ozceramicmagnet
•Aluminumdustcover
• Externalamplifierout
• Removabledollywithcasters
• Dimensions(HxWxD):27”x21”x14”
w/dolly
• 96lb/43.5kgw/dolly
Table of Contents:
Important Safety Instructions 2
Introduction / Features 3
Heritage B-15 Front Panel 5
Heritage B-15 Rear Panel 6
Important Information About Tubes 7
Heritage B-15 Block Diagram 10
Heritage B-15 Specifications 11
Heritage B-15 Service Information 12