| Mating Acoustats with Ribbons - Click HERE for Original Thread |
| coloradosound |
My Acoustat 2+2's are about 1/2 too tall for my ceiling,
so I am planning on rebuilding the frames and using
1/8" Aluminum (insulated with a Teflon/fiberglass tape
next to the panels ends) I also have some of the Carver
48 inch ribbons and was thinking that these could be
used to improve treble/dispersion. Since I will be building
a wider frame to accomodate the ribbons, I was wondering
If I should place the ribbons on the outside edge of the
panels (mirror image pair), or place them between the panels?
Also should I keep the angle between the panels (I think
it was 11 degrees), or change the angle, or mount the panels
straight flush with each other?
I plan on using a gentle slope to x-over in the
600-800Hz range.
Any ideas, suggestions, tips, etc.? |
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| david yost |
I have speculated about this sort of thing myself. I have a bunch of Acoustat panels and 6 of the old Gold Ribbon Concepts drivers...even bought a Behringer crossover/eq to play with. I was going to go with a 2+2 set-up with the ribbons in the center. My concern with mounting the ribbon inboard is that it could be modulated by the bass panels more than if it were mounted to the outside. On the other hand, the original Quad 57 does this without audible problems. I would be tempted to run it this way for symmetry of horizontal dispersion if nothing else.
You might want to get in touch with Thomas W. from the Infinitely Baffled subwoofer site, as I think he played around with Acoustat arrays with ribbon/leaf tweeters some years back. |
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| ThomasW |
I run a similar setup for my mains.
On each channel I have a pair of 1+1s. Between them is a B&G RD75 and a line array of Technics leaf tweeters. This is a variant of the classic Quad arrangement.
The Acoustats are used as mid woofers, they run from 80Hz-600Hz. The RD75 runs from 600Hz-5K, the leafs from 5K up.
Crossover functions are handled by Marchand units.
Where in Colo are you? I'm in south central Denver if you want to stop by for a listen |
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| coloradosound |
Sounds interesting, Thomas. I'm down here in the Springs.
I also have some (2) of the B&G RD75s!, but one of them is non-
functional, but I do have 4 of the 48in. Carvers that all work!
I think the BGs roll of around 18K (which is probably why
you are using the leafs?). I want to try to keep it simple as
possible and I was also looking at the Marchand X-Os.
I like their line level passive units (small inductor and cap!).
Maybe we can get together when we can find the time. |
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| ThomasW |
| Send me an email if there's a day when you're going to be up in Denver. My schedule is very flexible so I can accommodate virtually any time or day that's convenient for you... |
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