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In Reply to: RE: Maggies and acoustic panels posted by Satie on May 27, 2016 at 17:12:22
Curious why you chose a bipolar design... was it just to make use of the 'carcass'?
This little subs are something else. Granted, I'm still not finished the integration with the Mags yet as there are some things that aren't quite right; but, for their size they 'fill' very nicely. What's crazy is that even when the system is running at high levels (95db peaks) the woofers are barely moving.
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I had bipole in mind for extension. With the woofers facing forwards and back it was either dipole or bipole, since dipole would have cancellation I choose bipole. It makes for a more percussive bass as well, which complements the maggies which don't produce that kind of bass kick.
I run 75-80's db average, which on large orchestral works and big band jazz I listen to comes out to top peaks in the 105-115 db range.
Which Mags do you have and where are you crossing your bipole bass bins at?
I run a TIV/Neo8 and the subs were run for a short while cut in at 30hz 3rd order symmetrical with the bass panels. Did not really seem that useful even in the less bassy equidistant arc configuration, but gave me punch that would otherwise not be there. When I started experimenting with wall loading the bass panels the subs became superfluous entirely as I am at 0 db relative to the mids at 20hz and there is a broad hump 30-50hz 4-6 db above midrange levels with wall loading.
I took that target curve from the Focal Nova Utopia as it seemed to do things very right in the bass (rising genty to +3-5db 20-40hz in room) as opposed to the big Wilsons with their center humps at 80-100 hz. Yet when we played the 20 and 25 hz warble tones on the wall loaded TIV the owner of the Focals was asking "what's that?". I didn't manage to get the bass to be as smooth as it is on the Focals and overshot the target at 30-50hz but it gives you a good Fletcher-Munson compensation which is good for LP and CD EQ - but makes SACD sound too bass heavy; as it is typically mastered with the bottom octave boosted 6db relative to CD releases on classical..
Anyway, with wall loading the TIV bass was sufficient and all I got from the subs was extra TT rumble and a whole mess of extra wiring..
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