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!
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Showing 4 responses by dlcockrum

Some things said here are inaccurate.

First, my experience is that the subwoofer settings are not "brick wall" filters and allow a good bit of transmission of frequencies above the setting, which may or may not be accurate anyway.

Second, neither are the crossovers in the speakers "brick wall" drop-offs at the rated frequencies, rather they continue to generate sound at lower frequencies on a modest rolloff of output as the frequency drops.

I have found that it is necessary to set the crossover frequency of my REL subs far below what is notionally indicated to avoid bass bloat. Going higher is a step in the wrong direction, IME.

Third, subwoofers integrate better with full-range speakers when they are felt and not heard. The 30hz and lower frequencies from the sub(s) generate sound pressure that loads the room, giving a perception of greater bass weight and also better soundstaging.

Dave
Inline passive filters after the amplifier normally don’t relieve the amplifier of the load it sees when simply driving the main speakers, which is the primary reason that some systems may sound better with a crossover in the preamp or between the preamp and the amplifier splitting the low-level signal between the main amplifier/speakers and a subwoofer.

Dave


That is a super preamp, lalitk. Fine sub too. Congrats.

Dan Wright know his stuff. ModWright equipment is not cheap, but worth the cost and then some.

Dave
"In-line passive filters before the amplifier."

Okay Kenny. Thanks for the clarification.

Dave