No, sorry, but an adult forum this isn't.

I'm going minimalist / vintage with it's foundation the old vintage KLH 4.5 inch full range drivers found in the models 14, 19, etc. paper cone, cloth surround, BIG alnico magnet & motor structure. I'm mounting them open baffle on a fairly narrow baffle (12.5 X 48 inches). eight per side.

For the low-end, I'm staying with vintage KLH: a single 60's vintage Model 6 per side, stuffed in the corners of the room to (somewhat) match the efficiency of the array. For the high-end, I'm using a NOS pair of Radio Shack dual radial horn tweeters. Crossover is VERY minimal; seated listening posiition is only about 6 - 8 feet away, so comb filtering isn't too big of a deal. I'm running off tubes: either a vintage magnavox EL84 PP amp, or Sherwood S-8000 (7868 PP). If I REALLY want to shake the house (movie night) I run them off my Marantz 1152DC (125 wpc @ 4 ohms).

The sound has impressed anyone who has listened to them; very revealing. I feel the OB design really helps with the transparency. They sound best about 2 feet from the back wall. I eventually want to implement an active crossover w/ digital EQ for full flexibility and optimization. The klh FR drivers should start comb filtering around 1200-2400 Hz, although I havent measured them. . . they sound very good to my ears. Will try and do a full ribbon tweeter array eventually also, as I know the little Ratshack tweeter is a compromise . . .

I've been thinking of going with a front ported design of 2 modular units that can be stacked up, with 3 8545 drivers in each module. Ports would be situated so that they would be located one at the top and one at the bottom of the assembled setup.

Project has been delayed so I could pick up a new source, preamp and amplifiers so that I can spare those from my current system and relegate them to the project which would be built at my friends place. Also I'll be picking up some R45 ribbons and extra 8545 drivers next month which would actually give me enough for possibly building a rear channel R645 for rear channel use or in another room.

Marlboro

I couldn't find any specs on them but i guess its within the realm of possibility that they do go down that low since the B&G ribbon lines go to 600hz.

How much is the total cost for this monster?

Marlboro

I've got most of the items used. So far I'm in at about $1500 for the drivers alone, still need another pair of 30" ribbons so that will add another $850 or so, crossover components would be extra on top of all of that as would cabinet construction.