Geez, DQ-10's were omnipresent for a few years back in the late 70's before Jon Dahlquist went on to dabble in real estate and left the HiFi world behind. I remember the first pair that I heard was at the strangest audio shop. It was South of Market, close to B of A World Headquarters. It was justa door in a wall.
Inside, you walked up a staircase to a warehouse where the guy had everything. Kind of like the Abbot & Costello movie where there's a small tent in the desert and inside the tent is a spacious palace. The DQ-10's were one of his main displays. The other was a big pair of Dayton Wright Electrostats. Exotica galore.
Unfortunately, he was an "analytic" type as opposed to a "romantic".The way to hear things was at the point where the artist interfaced with the microphone. Everything in excruciating detail. Detail my foot, it was un-listenable.
They were good speakers for the time. Most speakers from that era haven't aged well. KLH 9 and Quad ESL retain their allure for some.
Sejidoren--If you bought them and you like them, that's all that matters.
a door in a wall.