Quote Originally Posted by alancohen View Post
I think I'm going to squirrel away some nuts and berries for a pair of 604-8H-IIIs from Bill. I can build my own cabs. They'd make a nice shop speaker. I do spend lots of time out there.

I want a set for the bedroom as well. I probably don't have room for a 15" driver cab. Maybe a 12". If the bi-amping experiment does not work out, I'll have a pair of 1W 300B OTL monoblocks without a home. I thought a bedroom system, where the volume would normally be very low, would be perfect for them. Didn't Altec make a 12" Duplex too? Like you, I'm hooked on horns.
I'll bet those GPA 604-8H-III's sound phenomenal--they've even got (the modern version of) Tangerines. To answer your question, yes, Altec made multiple 12" duplexes. Most of them were lower quality (IMHO) ceiling speakers, but they did make the 601's which were nice hi-fi/studio monitor speakers. They pop up once in a while on craigslist and Ebay etc. Here are a couple of links.....

http://altecpro.com/pdfs/vintage/Spe...20Speakers.pdf

2 Vintage Altec 601C Speakers in Barzilay Walnut Cabinets N 3000 E Crossovers | eBay

They also made the 601-8D which wasn't as good IIRC.....

http://altecpro.com/pdfs/vintage/Spe...%20Speaker.pdf

GPA also makes a 12" duplex with a single magnet which I haven't heard but doesn't seem to have the extended bandwidth I'd want. I really don't know much about the 212-8A's though....

http://www.greatplainsaudio.com/downloads/212_8A.pdf