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RE: Questions about high pass filter and balanced bridge

I thought you were referring to use these after the amp before the speaker, which would likely be a terrible idea.

In theory a single pole highpass and low pass of the same Fc should complement perfectly. The reason it might not happen in practice is if the impedance of the preamp output is significant with respect to the FMOD impedance. It could throw off the corner frequency of both the high pass and low pass in non complementary fashion and degrade the level of match.

That is what FMOD are trying to show with their graph showing different response with preamps of differing output impedance.

Unfortunately FMOD doesn't seem to give the schematic for what's inside. Without that it's going to be tough to get predict the response even if you know the preamp output impedance.

You might try emailing FMOD with the output impedance of the preamp and see what they say.


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  • RE: Questions about high pass filter and balanced bridge - Ugly 06/13/1714:10:39 06/13/17 (0)

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