Ampeg HERITAGE B-15 - Manual (Page 5)

Heritage B-15 Bass Amplifier Heritage B-15 Bass Amplifier
5
Heritage B-15 Front Panel
1964:
1. INPUT: The signal output from an
instrument (active or passive) may be
connected to one of the two 1/4" inputs
by means of a shielded instrument
cable. The top #1 input jack is 0 dB
while the bottom #2 input jack is
–15 dB. This channel replicates the
same circuitry as the classic
1964 B-15NC.
2. VOLUME: This controls the overall
output level to the speaker outputs.
Use it wisely, and turn it down when
making connections.
3. TREBLE: Use this to adjust the high
frequency level of the amplifier. This
provides up to 18 dB of boost or cut at
5 kHz. The high frequency output is
flattest at the center position.
4. BASS: Use this to adjust the low
frequency level of the amplifier. This
provides up to 10 dB of boost or cut
at 40 Hz. The low frequency output is
flattest at the center position.
1966:
5. INPUT: The signal output from an
instrument (active or passive) may be
connected to one of the two 1/4" inputs
by means of a shielded instrument
cable. The top #1 input jack is 0 dB
while the bottom #2 input jack is
–15 dB. This channel replicates the
same circuitry as the classic
1966 B-15NF.
6. VOLUME: This controls the overall
output level to the speaker outputs.
Use it wisely, and turn it down when
making connections.
7. TREBLE: Use this to adjust the high
frequency level of the amplifier. This
provides up to 18 dB of boost, or
–30 dB of cut at 5 kHz. The high
frequency output is flattest at the
center position.
8. BASS: Use this to adjust the low
frequency level of the amplifier. This
provides up to 11 dB of boost or cut
at 40 Hz. The low frequency output is
flattest at the center position.
9. 1966/STANDBY/1964 SWITCH:
Use this switch to activate the amplifier
after the On/Off switch [10] is turned
on. Always make sure this switch is
in STANDBY mode when powering the
Heritage B-15 ON or OFF [10]. Allow
at least 30 seconds before selecting
between 1966 or 1964. During short
breaks this switch should be set to the
Standby position to help prolong the life
of the amplifier’s tubes.
From Standby, users may now select
between 1964 cathode bias or 1966
fixed bias, 1964 or 1966 preamp or
have the ability to mix and match.
10. ON/OFF SWITCH: Use this switch to
turn the overall system power on or
off. Always turn this switch ON first and
OFF last! Turn the 1966/Standby/1964
switch [9] to 1966 or 1964 at least 30
seconds after turning on the On/Off
switch.
1 5 2 3 4 6 7 8 9 10
VOLUME TREBLE BASS VOLUME TREBLE BASS
STANDBY
ON
OFF
INPUTS
1
2
1
2