Dahlquist dqm-7 & dqm-9c, use the same woofer??

[Indynryder]

I have been researching both of these models. I can't seem
to get a deffinite answer, but all measurements, etc. Point in
that direction. Any help would be apreciated. thanx.

 

[PB196]

Just checked my 1986 Buyer Guide and yes, they both have 9" woofers. Actually so does the DQM5.