Dunlavy SC-IVa how best driven

I used ARC Classic 150s with my Duntech Princesses for years (John Dunlavy's design at Duntech that was the precursor of the SC-IV and IVA). Those amps had more than enough power for those speakers, and plenty of strength in the bass in particular. I think that they will work VERY well with the Dunlavys, don't replace them till you hear them with the speakers. My feeling has been that the Dunlavys really benefit from great tubed amplification more than the Duntechs, which had a warmer midrange; by using the Classic 150s you'd also get the benefit of solid state-like control and extension in the bass.

Ive also heard Duntech Princesses driven by the Classic 120,s great sound.
Jwin I ran my Dunlavy SC4a,s with a Pass x-350, But agree they sound much better with my Papworth Audio M200,s(240watt tube monos) Highly recommend tubes with Dunlavys. But I,m a tube man
Steve

You do not need a lot of power with the Dunlavy's - the Classic 150's are more than adequate. The SC-IVA's have a relatively high sensitivity (~91db) and a relatively stable impedance. Thus, they are conducive to the use of tubes. Indeed, after hearing the Dunlavy's with about a dozen different amps, the best amplifier for use with the SC-IVA's was, without a doubt, the BAT monoblocks (120w/ch).

I run my Dunlavys with a McCormack DNA2 Deluxe. Preamp is Pass X1. Hard to fault!

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