I'd be surprised if your setup wasn't as good or better in terms of sensitivity and range, Michael. You're a connoisseur. If you couldn't find what you want, you'd build it yourself (and I seem to recall you did!).1poorguy Actually I have relatively average speakers rated at 90dB (most expensive was the Paradigm floor standing speakers at $1500 the pair).The remaining 13 speakers are about average cost in their range – at about, roughly, $5-800 a pair. What I am big on is amp power. Speaker sensitivity was more important back in the day when amps were about 50 watts max but the present Yamaha Z-11 A/V churns out a total of 1180 watts (140x7, 50x4) and can drive the speakers (eight Ohm) easily. Since it takes double the amplification to raise the volume -3dB, I have lots of headroom with the Z-11. I haven’t built speakers in years (other things sorta got in the way) but if I were I have a design: hollow concrete spheres with a full frequency transducer mounted in an opening of the sphere. In effect large Helmholtz resonators.MichaelR
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