I did a google search for Dahlquist and found this info on a web page. lower mid looks like a Phillips AD5060
Also, give Simply Speakers a call or check out their web page. They rebuilt my woofers this past May for around $60 each. They also rebuilt my DQ 1W driver. I understand they can repair any driver in the DQ10. They are very good at what they do. They might also know what each driver make is.
Also, give Simply Speakers a call or check out their web page. They rebuilt my woofers this past May for around $60 each. They also rebuilt my DQ 1W driver. I understand they can repair any driver in the DQ10. They are very good at what they do. They might also know what each driver make is.