Nordstrand 3 Band Preamp
3B-3 ( 1 pickup - 3 Knob)
- Volume (pull passive)
- Mid
- Treble/Bass Stack
3B-4a ( 2 pickup - 4 Knob)
- Volume/Volume Stack
- Passive Tone (pull passive)
- Mid (pull frequency selector)
- Treble/Bass Stack
3B-4b ( 2 pickup - 4 Knob)
- Volume/Passive Tone Stack
- Blend
- Mid (pull frequency selector)
- Treble/Bass Stack
3B-5a ( 2 pickup - 5 Knob)
- Volume (pull passive)
- Blend
- Treble
- Mid (pull frequency selector)
- Bass
3B-5b ( 2 pickup - 5 Knob)
- Volume (pull passive)
- Blend
- Passive Tone
- Mid (pull frequency selector)
- Treble/Bass Stack
3b preamp specs:
- Overall gain is +/- 10db by a trim pot on the circuit board.
- Bass +/- 12db @ 50Hz
- Treble +/- 12db @4khz
- Midrange +/- 12db @ 1k with no external capacitors. Add two capacitors as indicated in the table to change the frequency.
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Nordstrand 2 Band Preamp
2B-3a ( 1 pickup - 3 Knob)
- Volume (pull passive)
- Treble
- Bass
2B-3b ( 2 pickup - 3 Knob)
- Volume (pull passive)
- Blend
- Treble/Bass Stack
2B-4a ( 2 pickup - 4 Knob)
- Volume (pull passive)
- Volume
- Treble
- Bass
2B-4b ( 2 pickup - 4 Knob)
- Volume (pull passive)
- Blend
- Treble
- Bass
2B-4c ( 2 pickup - 4 Knob)
- Volume (pull passive)
- Blend
- Passive Tone
- Treble/Bass Stack
2b preamp specs:
- Overall gain is +/- 10db by a trim pot on the circuit board.
- Bass +/- 12db @ 50Hz
- Treble +/- 12db @4khz
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