front loaded 3 way mid tops

Hi.
I've been running the 1st prototype of the opus cs850 for a couple of years now, to good effect. my own hyper-critical criticism of them would be that the high mid & top are fractionally too loud, in that they run about -6dB on the opus amps, compared to the bass which runs at 0dB, which is fine, but i've got a theory that if the speakers were quieter I could run the amps louder, and closer to the limit, so with live music I could rely on the opus amps' limiter to sort out any 'loud bits' in the live music & do away with comp/limiters on a lot of the channels.
Also, the low mid is not really having it on the CS's. I've overcome that up to now by running a 2x15
 'wheelie bin' per side (sometimes 2) up to 180 Hz, and running central subs up to 80Hz.
so, a possible solution:
just one high mid cone per box instead of 2, custom engineered to become a duel concentric for the stunning new opus 1.4" comp. Then both top. (without it's horn) & hi mid should be somewhere around 3dB quieter.
then, as they're both so much smaller, there's space for 2 x 10" bass/low mid cones beneath them. a 3 way box. probably end up passive between the hi mid & top.
here's the 1st one next to a CS850, and also 2 x single cone low mid boxes to compare drivers & compare ported vs sealed.
just waiting for some more samples to turn up.






also had the idea (thanks mykey) of rounding the fronts to minimise edge diffraction, and to make the internals more cylindrical, cylinders being 2nd best to spherical.










I'm not going to go into the drivers used, 2 of them are oem's anyway, at least not for the moment, but it's quite an interesting idea for the diyer as duel concs can be bought complete, and a simpler trap box could be an easy build for anyone.
more to follow after driver & box shape listening tests.

how are you planing on wireing the sub!!. . . . . . .

djcrude wrote: how are you planing on wireing the sub!!. . . . . . . 1 driver would be at 8ohms 2 drivers would be at 4ohms 3 drivers would be ar 2ohms   but at 2 ohms is it stable?? or is their another way of wireing

any news opus?

on the cabs btw they look lovely

Faital Pro have some tasty ones that might fit the bill, if you can get them.  Not sure on coil material, but they have models bettwen 3-700watt, good xmax and suitable efficiency.