I’m shaking my head at the small speakers others are recommending. To buy small new speakers for that large room, because you ’read’ new is better, is to shoot yourself in the foot. Restored Vintage, done by others, or you do it, will give you much more appropriate choices for that large room.
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Case in point, to make my point:
the photos of those JSE Infinite Slope Model 2’s were horrible, perhaps this will give a better idea of what they are
meanwhile, the black ones with the lousy photos are exactly the same except:
high gloss black laminate
thouroughtly upgraded with the help of the original designer/manufacturer
all 4 woofers re-done by Audio Classics, the people who overhaul McIntosh equipment among others.
original design benefits from two unique patents awarded to Richard Modafferi, of McIntosh tuner fame.
1. infinite slope crossover 100 or 120 db/octave, amazing clarity
2. phase shift controlling the 12" and 10" ’progressively’ to provide amazing lows and smooth use of them together within balance of the upper mid/mid/tweet.
Those patents were originally licensed by JSE and now licensed by Joseph Audio
Someone has to need them who lives close enough. If I had room for them, I would have my woodworker sand the laminate and add a select, perhaps exoctic wood veneer.
Oh, yeah, change them to 3 wheels, put corner blocks just above the floor, no touch unless they start to tip during relocation, i.e. alternate positions/toe-ins.
here’s a review to their baby brother Model 1’s which also sound amazing, in a smaller space
talks about the two unique patents
http://www.hifi-classic.net/review/jse-infinity-slope-model-1-486.html
I widh I had another room, or my son had already bought his new house