Dunlavy SC-IVa how best driven

I am pleased that my Classic 150s will work well. I have loved these amps and the way their solid state front ends and 4 pair each of 6550C back ends provide the best of both worlds. I do have two more questions if you are kind enough to help out. It appears that the 4 ohm outputs should be used and with a room 16W x 17D x 11H what might the best placement be?
Thanks for your hel.
Jeff

Since the impedence and sensitivity of the SC-IVAs and the Duntechs I had are quite similar, the 4-ohm taps should work fine with the Dunlavys (in fact, they were the best sounding taps on that amp in my view). As far as placement goes, your room is about the minimum size for those speakers. Dunlavys are nice in that you can place them closer to a back wall than many others and still get reasonably decent sound (you will lose some soundstage depth back there), but they do sound much better away from the back and sidewalls. You should try to set up the speakers so you're sitting about 8-10 feet away from them so the drivers can better integrate, then bring them out from the back wall as far as you can without pushing your listening seat too close to the back wall (which will give you more, maybe too much, bass); they can also be set quite far apart if you like without affecting the imaging (I had my Duntechs about 9 feet apart; I've heard a pair of SC-VIs which were 20 feet apart image like a pair of mini-monitors), just toe them in more and watch out for sidewall reflections. Dunlavy advises putting them along the long wall, but in your case there isn't that much of a difference. These are just general suggestions--while they weigh a lot, it does pay to experiment with the placement, and they can be moved with a little effort so long as you don't have the spikes on them. Good luck!

Spectron Musician II. 500WPC will make those Dunlavy's sing!! Drop me a email,, I may be able to help you match up your pair.

I have the Dunlavy SC-V(s) and am quite familiar with
the entire Dunlavy line. One thing for sure is that Dunlavy
speakers love high current designs. In fact, I believe the
deep clean bass potential with these speakers is unsurpassed. I have had terrific success using two ARC D200
amps vertically bi-amping the speakers. Great Northern
Sound Co. can do wonders throughout the system in terms of
cost effective modifications that will maximize system potential.

I had a friend drive a pair of IV's with a pair of B&K M200's. He then added a second pair of B&K M200's (all amps sent back to the factory for calibration). The differnece was startling. I know these speakers are 91 db efficent. I know these speakers don't vary much in impedance. I know the manufacturer claims 150 watts max. I know the manufacturer doesn't think bi-wiring or bi-amping helps these speakers. I also know what we heard. The soundstage became enormous particularly in height and depth. There was an effortless quality to micro and macro dynamics that was both staggering and elegant. Vocalist became more coherent and dare I say human. Why such a difference? I don't know. Maybe we wanted to hear the differnce? Maybe the amps were running in class A longer? I don't know. I do know that it happend consistently, time and time again, even in different rooms.