I restarted the Altec A7 Voice of the Theatre renewal with Tim and Colin, soo to follow into the High Efficiency 2 way hot setups will be Joe I hope, he is going 2-way, but not VOTT but reflex and Altec horn/driver.

Anyways, this is about a 16" coaxial driver made by a Bill Hanshack who runs Great Plains audio. Bill was one of the last GOOD engineers working for Altec before they let the bean counters run them out of business.

The woofer cone is a 15" 515 variant and a 902 driver on a Mantaray horn lens. Crossover I am using is the N1500 (1500hz) with 2 different adjustable controls for HF compensation adjustment, and a MF adjustment.

I have mine in 4 cubic ft cabs tuned to 40hz(temporary until my cabinet make completes the 10 cubic ft enclosures for me(exterior - interior I am going to guess at around 8.5 cubic ft after bracing and drivers and ports are taken into consideration. I am thinking of going with a port of 6" x 10" x 14" deep for around 28hz(at least that is what my feeble mind is thinking).

Current evaluation using Yamamoto 45 SET amp/DeHavilland - Verve pre/Audio Note -cd21x cdplayer:

The pinpoint imaging is nice and the soundstage sets back well enough. The bass goes deep but is thin(tolerable - bigger box will help out here). The treble sounds decent enough even though the plastic Mantaray horn is thin plastic.

This is a speaker system for someone who don't want to tweak(other than crossover controls), imaging is good and I would recommend these if you have a large room.

Unlike most High Efficiency speakers, this speaker likes more power to come alive. The 2 wpc Yamamoto did not wake them up like my McIntosh MC-240(40wpc).

More on this will follow, time for more beers and currently listening to "Talking Heads live in concert CD).

If anyone has any specific questions to ask about the 704-8A or willing to travel to Columbus, Ohio to hear them, just drop me a line through the forum(e-mail).

Ron