Dahlquist DQ-10 Passive Crossover

Burning out your speakers is hardly relevant to my request for DQ-10 crossover information. Maybe you should get Voice of the Theatres.

Yeah, thanks. I'm convinced that the concern for bass boost is why Jon separated the legs because the topology he used there would have messed up the rest of the series circuit. The resistors across the woofer, where a cap should be, bring the woofer Re below 3 ohms, and the midbass crosses over way under the published 400 hz. The cap in series with the midbass appears to be the only place he could put one in order to roll it off but he could have put it ahead of the bass resistors too. Maybe that didn't pan out. As an experiment I replaced the 80uf cap, which rolls the midbass off at approx 180hz (too low for the stock driver's capabilities IMO and the reason that replacing it improves the midbass), with a 36uf cap for a 400hz rolloff and the upper bass disappears. The lack of bass was a criticism of the prototypes, and according to J. Gordon Holt, Jon scrambled to correct it. A pretty imaginative change to the layout, I have to say. A desire to have the cosmetic appearance of a Quad and a reasonably sized bass enclosure really painted the DQ-10 into a corner.