Heritage B-15 Bass Amplifier

Heritage B-15 Front Panel

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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.

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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.ON/STANDBY SWITCH: Use this switch to activate the amplifier after the On/Off switch [11] is turned on. Always make sure the On/Standby switch is in STANDBY mode when powering the Heritage B-15 ON or OFF [11]. Allow at least 30 seconds before turning the On/Standby switch to the ON position. During short breaks this switch should be set to the Standby position to help prolong the life of the amplifier’s tubes.

10.BIAS SWITCH: With this switch, users may now select between 1964 cathode bias or 1966 fixed bias, 1964 or 1966 preamp or have the ability to mix and match.

11.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 On/Standby switch [9] on at least 30 seconds after turning on the On/Off switch.

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