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Cutting below 80 HZ on my mains, so subwoofers handle deep bass?

Sorry in advance if these are obvious questions.

I recently picked up two Rythmik L12 active subs to go with my Tekton Lore towers (10" full range driver with super tweeter). The Lores do an admirable job with deep bass (down to 30 HZ) but the L12s destroy them in quality and depth of the low-end.

The towers and subs use separate pre-amp outputs, but share one volume control. The subs are set at 80 HZ and below. Because the towers and subs currently share a lot of the same frequencies (which can potentially cause the bass to be overwhelming) is it possible to add an external crossover style device to cut 80 HZ and below from the main towers? It may improve the mids and highs if the tower drivers aren’t working as hard? And the sound may seem cleaner with greater instrument separation?

Thanks!
pts

Showing 2 responses by aolmrd1241

aolmrd1241
1,046 posts
 
If you low pass your mains at 80 hz, this could be a less expensive alternative to see where your at. You really do not want to cross high and low at the same 80 hz frequency. A bit higher [high pass cutoff] is recommended rather than the same as the low pass filter cut.

http://www.parts-express.com/harrison-labs-fmod-inline-crossover-pair-100-hz-high-pass-rca--266-274
aolmrd1241
1,046 posts
 
pts said..."So maybe cut 60 HZ and below for the mains, and set the subs at 80 HZ? Then there’s still a little play between the two. I see how not drawing such a hard line with the frequencies could help not create a hole in the audio."


Setting the subs low pass at 80 hz will not relieve the mains from also playing in the subs bass frequency range. The inclusion of a high pass filter of say 100 hz will only let the mains produce frequencies at 100 hz and higher,thus relieving the sub and mains from reproducing the same frequency... With less overlap... the better the in room bass response.    
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