If it has a down firing 12" with a passive 15" on each side those are the rtr dac-1 rhombus speakers. They get down to 16hz truely amazing design.
"gear-heads": OLD subwoofer help needed
I ran across a set of old but quite large RTR subwoofers today. Even though they are pretty much gutted, the design is like nothing that i have ever seen before. The specific model is listed on the cabinet as a "DAC 1". ANY info / leads / background that you can provide would be GREATLY appreciated. I have NO idea as to when they were made, but i would guess sometime around the late 70's or very early 80's or so. Sean
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