Many moons ago I owned the DQ10. I used a 200 watt Forte amp and the combination was outstanding. I think the DQ10 would compete with any speaker made today. BTW, it is listed number 6 of the most significant speakers of all time!
www.theabsolutesound.com/articles/the-12-most-significant-loudspeakers-of-all-time/
www.theabsolutesound.com/articles/the-12-most-significant-loudspeakers-of-all-time/