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need help with subwoofer setup. crossover related

Hi all

I need some help with the crossover setup for my subwoofer. My neat mf5 speakers goes down to 29hz -3db while my subwoofer crossover is only to 40hz at the lowest. So i have a overlapping of frequency. 

My amp and preamp have no subwoofer management and my subwoofer do not have eq. My squbwoofer ia the genesis g928 with dual 12inch woofers.

My room is acoustically treated with bass traps and diffusers. I am very satisfied with my 2 channel and was trying to achieve to the low 20hz ffrequency for pipe organ music and to increase soundstage.

I know many will recommend getting a external dsp like mini dsp or velodyne sms1...but there will be an extra cable to connect these devices to my main system. And therefore will effect the performance of my main system indirectly. 
What i desire is just to crossover the subwoofer to 30hz lowpass to blend well with my speakers. Or to crossover my speakers high pass to 40hz to blend well with my subwoofwrs. 

So is there any way i can externally or internally crossover my sub to 30hz without affecting the main performance of my current speakers?

Or is there any way i can crossover my speakers to 40hz without an external device? (Without the involving another set orlf ultra expensive interconnects)
Thank you all for the help and sorry for the long post.
nieveulv

Showing 1 response by audiokinesis

audiokinesis
2,765 posts
 
Overlap can be dealt with via the phase control on the subwoofer amp.

I recently set up a system where the mains had a muddy bottom end but we didn't have a suitably high-quality highpass filter to roll off their bottom end. So I overlapped with the subs and put the subs out-of-phase with the mains. This not only resulted in a good blend and pretty much eliminated the buddy bass of the mains, but subjectively it seemed to clean up the rest of the spectrum of the mains a bit as well. I can't explain why.

We did use measurements to get it dialed in; would have been difficult by ear.

Duke
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