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High quality high pass filtering for speakers?

Is there a good option for high-passing the speaker connection in a high-end system? 

I want this for a few reasons.
1. NO loudspeakers will come close to a really good standalone sub. Even $20k + speakers end up with really bad distortion at 50hz.
2. My sub has 3 parametric EQs, which helps tremendously in dealing with a 12db spike I have around 60hz. It's no help at all if the speakers are playing that frequency.
3. Even with 2-way speakers, there is still a lot of overlap between sub and speakers without a high pass. Not ideal.
sboje

Showing 2 responses by erik_squires

erik_squires
15,902 posts
 
Should say it also depends on what you want to fix.

If you want to minimize your main amplifier's output, you want an active crossover before the amp.

If you want to perfect the integration between your sub --> room and sub --> satellites, a miniDSP on the sub alone will do it for you. :) requires measurement and iterations.

Best,


E
erik_squires
15,902 posts
 
Your comments about a good sub, well integrated are not wrong.

So, no high pass filter is a brick wall. If your 2-way is sealed, and you add a 2nd order filter you end up with a total 4th order. Pretty steep, 24dB/octave.

That is how THX attempts to do things, with 80 Hz satellites, and a matching 24dB/octave lp on the subwoofer.

The best way to do this is before your amp. Either using a miniDSP type of solution, or an analog system like Bryston's crossover. The advantage of the miniDSP route is unlimited EQ and time delay being available at both high and low pass.

Best,

E
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