I sincerely doubt that someone will list their Sunfire's as having "the Apogee mod" as that is what Robert Levy of Sunfire refers to them as. Sunfire's technical dept calls this their "thermal and high current update". Good luck finding used models that have this done.
As far as the Kappa's go, use what you have. Just take it easy on the spl's and you won't hurt your amp. The more that you push the volume up, the less headroom and mores strain on the amp. Too much strain on a steady-state basis with a lack of headroom results in thermal stress, distortion and the potential for the amp and / or the speakers to go "poof". Sean
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As far as the Kappa's go, use what you have. Just take it easy on the spl's and you won't hurt your amp. The more that you push the volume up, the less headroom and mores strain on the amp. Too much strain on a steady-state basis with a lack of headroom results in thermal stress, distortion and the potential for the amp and / or the speakers to go "poof". Sean
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