powering two pairs of Dahlquist DQ10s


I just got a second set of Dahlquist DQ10 speakers and am wondering how to use them.

I have he first set mounted on a wall, powered by a van Alystne mod Double Dyna 400. Somebody suggested to me that I could use the second set on stands underneath the first and biamp them.

This is new territory for me. How exactly would this work? Is it also possible to power them both with the same amplifier?
bosconermal
I agree with the other posters who recommend getting them off the wall. They generally will like being in or near the cardas recommended locations - see cardas' web site.

I had two pair, twice. The best sounding happened to be side by side on stands that raised them about 18-20 inches off the floor. Each pair was driven by an Audio Research D76A, which were driven by an Audio Research SP3A1. The system was one of the best I've ever heard - open, airy, played deep and tight and loud with excellent transient response, detailed but pleasing highs. Rock and roll was close to perfect. If I could get that sound back I'd never want to make another tweak.

I later had a 2nd double pair that I mounted in custom steel frames so that they were vertically stacked rather than horizontally side by side. This configuration was visually more impressive but sonically not as good, but it could have been different/lesser electronics and/or less desirable room acoustics.

In any event, DQ-10s are classics and worth every penny if you find good ones on the used market. 2 pair has the potential to be a knockout.
I have 6 pairs of DQ10s set up. I used some industrial strength metal racking obtained from Lowe's and modified them to accommodate all the Dqs. They are essentially stacked upon each other in three sets of rows. I am unable to post a picture here. If you send me an email to jenguillo7@cox-internet.com, I'll send you a picture and schematic of how they are hooked up. Essentially l amp is pushing 2 sets of DQ10s. Your amp must be able to handle the split load. Good luck.
You could always use a Speltz Autoformer to bring the impedance of two pairs operating off of one amp back up to double or even triple the impedance of a single pair.
Years ago, I heard 2 sets stacked, the top set was upside down. The guy made a bracket that molded around the top edges of the bottom set and the top set slid into the bracket, then had screws or bolts go through the side of the brackets into the speakers that stablized them fairly well. in this case, 2 sets were an improvement over 1 in almost all area's.