Posted by mhammill on April 23, 2002 at 19:06:24

In Reply to: compression driver + 15 inch or large piezo horn + 15 inch posted by Rudi on April 23, 2002 at 14:31:50:

The ksn1188 piezo does go down to 700hz and is remarkably smooth with a 5x15 parts express horn but the efficiency is no match for a delta15. It's about 93db and a delta15 is more like 100db so it just won't keep up. But there are other 15" woofers that would work very well with this horn.
But no match for a theater 4pi.
Good luck.
Mike H.