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G&L L-1500/L-2000 Controls Question

The knobs on both basses are volume, passive treble cut, and passive bass cut. The switches are slightly different though. Both have series/parallel switching for the pickup(s), but some special order L-2000's have series/parallel/single coil switching. The L-1500's other switch is passive/active, while the L-2000's is passive/active/active with treble boost. Oddly, the L-1500's active mode actually has more treble boost than the L-2000's active with treble boost setting.
 
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do the treble and bass cut knobs work in passive mode? If so what is the difference between the active and passive mode?

Thanks,
Dan C.

Yes, as Jim said, they work in passive and active modes. They are passive controls, cut only. The treble control is just like any other passive bass's treble cut. The bass cut is unusual, but appropriate considering the massive low end produced by the L-2000's neck pickup. Heck, it's even useful on the L-1500.

So, active mode gives you some aggressive "bite" in the tone, and like any active pre, it prevents treble loss over long cable lengths.