If you can swing a used pair of 40.1's, you can sell your sub and get off the speaker merry-go-round. I use 40.1's in a room of similar size (26' x 14' x 7.5') driven by VAC 30/30 MKIII Signature... or when I want a different flavor, change over to a Music Reference RM9 MKII.
You should have no problem driving them with your 70 wpc Quicksilver amp... although others insist upon driving Harbeth's with stout solid state amps. I've tried eight different amps with the 40.1's, including three solid state amps, but the two amps I have now are the best I've heard.
You should have no problem driving them with your 70 wpc Quicksilver amp... although others insist upon driving Harbeth's with stout solid state amps. I've tried eight different amps with the 40.1's, including three solid state amps, but the two amps I have now are the best I've heard.