AVS Special Member
Join Date: Dec 2005
Location: central Louisiana
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Just in case anyone searches this old thread I just saw, I'll answer. Yes I tried a few other horns, the threaded version of the horn the 4pi used, also a few others from parts express including the HM17. All of the other horns were plastic and cheap next to the JBL beefy aluminum horn. It really is a nice expensive feeling horn.
At first it sounded slightly harsh as i stated in my reviews (I later discovered they needed more break in time). That's what led me to try other horns. Of all the horns, the JBL horn was definately the best by far, it imaged superbly and as the speakers broke it really smoothed out and was just outstanding. To me the 4pi horn was close but sounded a tad ...spitty at times.
Other than that, I have built a few subs and loudspeakers and was very surprised to find very thin insulation inside the cabinets. Knowing the 4pi had a similar woofer by JBL and similar crossover point and it had thick r13 in the cabinet....I upgraded the center channel with r13. The deeper part of the vocals smoothed out even more and i would definately recommend it to anyone who buys them as a cheap little upgrade.
As far as the foam in the horn, I tried it, I actually felt they where so smooth (to my ears) that I really had no use for it.
Nothing has come close to the dynamics and just pure "goofy grin" feeling these gave me. Soon we will building a new house and I WILL have room for these behind my screen, actually (at the moment) I'm thinking I'll probably going with a 6 channel system with 6 3677s all the way around the room.