Heritage B-15 Bass Amplifier

HERITAGE B-15 TECHNICAL SPECIFICATIONS

Preamp Tube

3 x 6SL7 (N.O.S. JAN Philips ECG 6188)

 

 

Power Amp Tube

2 x 6L6GC

 

 

Rectifier Tube

1 x 5AR4 / GZ34S or user optional 1 x 5U4G

Two channels

1964 channel is based upon the 1964 B-15NC Preamp Circuit

Two inputs

Input 1 is 0 dB, Input 2 is –15 dB

EQ

Baxandall Bass +/–10 dB @ 40 Hz

 

Baxandall Treble +/–18 dB @ 5 kHz

1966 channel is based upon the 1966 B-15NF Preamp Circuit

Two inputs

Input 1 is 0 dB, Input 2 is –15 dB

EQ

Baxandall Bass +/–11 dB @ 40 Hz

 

Baxandall Treble +18 / –30 dB @ 5 kHz

 

 

Power Tube Bias

 

1964

Cathode per 1964 era B-15NC

1966

Fixed per 1966 era B-15NF

 

 

Output Power Rating (8 or 4

)

1964 Bias

25 watts rms @ 5% THD

1966 Bias

30 watts rms @ 5% THD

 

 

Ext Amp I/O Bus

1.25 Vrms (+4 dBu) @ amplifier output clip,

 

unbalanced bus connection, post volume controls

 

 

Speaker Outputs

1 x 8 (Heritage B-15 cabinet)

 

2 x 4 (One 4 cabinet or two 8

 

cabinets; i.e. Heritage B-15 cabinet plus 8

 

extension cabinet)

 

 

Speaker Specs

Custom-designed 15” Eminence driver

 

Die-cast aluminum frame

 

109 oz ceramic magnet

 

4” Voice Coil

 

Aluminum dust cover

 

400W power rating

 

Made in the U.S.A.

 

 

Cabinet Construction

Highest quality Baltic Birch, solid Poplar and

 

featuring dovetail box joint construction

 

 

Size (H x W x D) with dolly

27 in/686 mm x 21 in/533 mm x 14 in/356 mm

 

 

Weight with dolly

96 lb/43.5 kg (approximately)

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