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Thanks Christine, my speaker's sensitivity is a low 88dB @ 1 watt per meter and I have 325 watts at 4 ohms.

In the instruction manual for my Arnie Nudel designed Infinity Reference Standard Kappa 7's it says to “buy an amp with as much power as you can afford.”

With my 4 ohm Kappa 7's I discovered I needed not only lots of amp power but also one that was stable down to 1 ohm, because the Kappa's 7's hit a low of 2 ohms.

I had a Denon 80 channel watts per channel receiver that ran very hot with these speakers and didn't have the "oomph" they did at the store sort of like they were running out of steam. That was in 1993 and I talked to Arnie and he suggested I select an amp with at least 150 watts per channel that was stable down to 2 ohms and that would solve my problems. I worked at the Good Guys back then and I was discussing the problem with representative from Adcom. He suggested the GFA-555II as a solution as it "measured" steady down to 1 ohm and outputted 325 Watts into 4 ohms and he correctly said I would never hear strain or overload again. The speakers have performed flawlessly for the past 13 years!

So Chirstine at 90dB @ 1 watt per meter your speakers are 2dB more efficient than mine so you amp power seems to be just about right.

I too have always preferred the sound of inefficient speakers.

Happy listening,
Teresa


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  • Thanks Christine, my speaker's sensitivity is a low 88dB @ 1 watt per meter and I have 325 watts at 4 ohms. - Teresa 13:36:04 09/11/05 (1)


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