# Crossover mixer

**URL:** <https://unity.neuraldsp.com/t/crossover-mixer/6209>\
**Category:** Feature Requests\
**Tags:** quad-cortex\
**Created:** [December 8, 2021, 7:12am UTC](https://unity.neuraldsp.com/t/crossover-mixer/6209 "2021-12-08T07:12:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![greim](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/greim/32/2398_2.png) [@greim](https://unity.neuraldsp.com/u/greim)\
**Post date:** [December 8, 2021, 7:12am UTC](https://unity.neuraldsp.com/t/crossover-mixer/6209/1 "2021-12-08T07:12:27Z")

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This would be a “mode” or “variant”, like the splitter crossover variant, but on the mixer. That is, at the mix point, it would discard everything above frequency X on channel A, and discard everything below on channel B, then mix what remains to produce the full-range signal.

For example say I like the high-end of amp A, but the low end of amp B. This would give me the best of both worlds, and would open up a lot of tone-shaping options.

It can’t be done with a crossover splitter, since effects applied after the split tend to “escape” the crossover bands. That is, a distortion pedal—even though the incoming signal only contains 800Hz and below—will add coloration above 800Hz to the outgoing signal. The frequency-selection needs to happen after all effects are applied, i.e. at the mixer.

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**Author:** ![Firerock](https://avatars.discourse-cdn.com/v4/letter/f/7feea3/32.png) [@Firerock](https://unity.neuraldsp.com/u/Firerock)\
**Post date:** [December 11, 2021, 12:45am UTC](https://unity.neuraldsp.com/t/crossover-mixer/6209/2 "2021-12-11T00:45:53Z")

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You could try using the current crossover option and just add high and low pass filters at the end of each fork of the split.