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
Back in the early to mid 80's The DQ-10 was my reference speaker. As tomic601 states the drivers are of Phillips design, the woofer was made by Advent. I replaced the Piezoelectric super tweet with  a modified  Panasonic ribbon with level control. That improved the highs immensely. Also replaced mylar caps with high quality polypropylene caps. Make sure you get them up on their optional stands instead of the short 4 inch pegs that normally come with the speakers. If you can't find Dahlquist stands, they are fairly easy to make. They put the speaker approx. 12 inches off the floor.
I recommend Bill LeGall at Millersound for any speaker repair.   A true artisan, in a world that is running out of true artisans.
Should you not have the stands, I have a pair from mine (when I sold then I guess the guy didn't want them)

If in the NY area they are all yours, happy to give them to a fellow QC-10 owner.
If you happen to want to make your own stands, below are some dimensions for making them obtained from Regnar, years ago. I finally retired my DQ10’s this past year after 40 years of faithful service, passing them on to a neighbor.

DQ-10 Stand Dimensions

Top platform: 15" W x 7.5" D
Back Lip attached to top platform: 15 W x 1.5" H
Column posts (in between top platform & Bottom Base): 7" H
Bottom Base: 22" W x 11.5" D
Posts are 60mm square

Mike