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Please help me get my missing frequencies

My sub has a Low Pass Filter, switchable from 38-65Hz 6 positions. As far as I can tell, my PrePro sends out the entire LFE channel to the sub no matter what the crossover is set to. If the highest freq setting in the sub's LP filter is 65Hz, and the LFE can contain freqs up to 120HZ, then I am missing nearly a 55hz band. Can anyone think of a solution that I can get at those missing freqs?

Thank you in advance,
Cap
captaincapitalism

Showing 2 responses by sean

sean
6,231 posts
 
It looks like the "normal" mode sends the bass for all the speakers that you have set to "small" mode to the subwoofer. If you are running all the speakers in "large" mode, the only sounds that the sub would be fed would be the LFE channel. At least that's what i got out of reading what you posted here. This is normal and nothing to fret over. Hopefully, you've purchased speakers that are capable of low frequency output and are running them on the "large" setting. Sean
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sean
6,231 posts
 
It sounds like you've got an adjustable "rumble" filter along with a variable subwoofer crossover. If that is the case, you should be running the LP filter as low as possible or just below the point of tuning if your speakers are vented ( port, passive radiator, etc... ). The sub should be adjusted for whatever frequency gives you the best sound. This would allow the mains to play full range and then have the sub augment them as the LFE channel is called into play. Sean
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