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New member - Dahlquist DQ10 questions

Hello gentle people,

im a retired electronics engineer so I now have time to do some repair projects I've been wanting to do. 
I've wanted to get back into listening to my stereo setup and be able to play vinyl again so I resurrected a pioneer pl 50 table and then got to looking at my DQ10's thinking I'd refoam the woofers, check the crossovers, etc. I've owned the dq10's for over 25 years and never did a thing to them but when I got them apart, I found the woofer surrounds to be in great shape, which I thought was really weird. The guy I bought them from mirrored them and I'm wondering if he then coated the woofer foams and that's why they're in such good condition.
I did find one of the 5" mids has a approx 1/4" tear in the rubber surround. It plays ok but I'm thinking the surrounds on both mids should be replaced. 
I've been doing a lot of reading but see no replacements for rubber surrounds for these.
Anyone know of a source?
Also, I'm driving these with a (about to be recapped) quad 405-2, that is driven by a Mac C27. 
Im thinking even after a recap, the quad may not be up to the task. Thoughts?

Thanks very much

ritamacaw
almarg's avatar
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almarg
9,670 posts
 
Regarding replacement of the surrounds on the mids, contact Bill LeGall at Millersound.net. His repair work on older speakers has received effusive praise from many members here over the years, including me, and he is a delight to deal with.

Regarding use of the Quad amplifier with the DQ10s, I see in the manual for the speaker that its impedance is specified as 8 ohms, and varies over the frequency range from about 5.5 ohms to about 10 ohms. And amplifier power ratings of 60 to 200 watts are recommended for it. The 100 watt/8 ohm rating of the amp falls right in the middle of that range, so I see no compatibility issues. Having no experience with the amp, though, and just brief exposure to the DQ10 many years ago, I can't comment on the sonics that would result.

Good luck, and welcome to the Forum! Regards,

-- Al (also a retired EE)  
ritamacaw OP
17 posts
 
Thanks for your response Al, much appreciated. 
I'll checkout miller sound. 

Have a great holiday. 
Michael
tomic601's avatar
tomic601
12,884 posts
 
lots of info out there on improving the already good DQ-10. Memory has it w phillips midrange, which should be available or repairable. I would replace the Piezo “super tweeter” for sure, those were obnoxious.
have fun, the quad is a good amp from a legend!
best
jim
goose
682 posts
 
I had the DQ-10's as my first speaker.  I drove them with Mac gear (C-28 pre and 2205 Amp).  The amp was rated at 200 watts per side.  My experience was that they really needed a lot of power / current to get to them going.  I don't think you should be shy about getting a lot of power to them, the more the better.
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