Recommendations for power Infinity Kappa 9's pease

[Mr Peabody]

The 555 and 5500 are both 200x2, the 555 is an older model. Both are good amps. If you could buy both it would be the best but I believe either could probably run the 9's in full range.

[efertheredfish]

Hello

it seems to be pretty amusing what was recommended above. There is one thing you can be sure. After having the crossover repaired to met its orginial specs and woofers refoamed you should consider that your louspeaker is like new, so I would enourage you to use newer eletronics, becouse they surpass the preformance with the loudspeaker.

If you want to drive the whole loudspeaker with one amplifier I would recommend you the Modwright KWA 150 power amplifier. It sounds better than the Pass amp and even more natural in the mids and highs.

If you want to biamply I would certainly encourage you to use a vaccum tube amplifier for thr midrange and tweeter. I have tried the Balanced Audio Technology BAT 150 VK Se and it sounded beyond my dreams.

For the preamp I'm thinking about an Asthetix Calypso or a Modwright SWL 9.0Se.

This amps aren't cheap, but the Kappa 9's are close to the Genesis 3 in preformance and they sound excellent with that amps. It is often said that the Polydome produces harshness or shrillness, but once you hear them with newer eletronics or tubes in the mids and highs it sounds almost totally different. (airy and spaceous)

Hope that helps.
Stefan

[efertheredfish]

The Emotiva 2 doesn't have the power to drive the Kappa 9's , but I was very impressed with the XPA-1 on the 9's.

[bfalls]

The Emotiva 2 doesn't have the power to drive the Kappa 9's , but I was very impressed with the XPA-1 on the 9's.

Wow! It must be quite the load. The XPA-2 is capable of 300w/ch, has a 1.2KVA transformer and additional 450,000uf secondary capacitance. The Kappa's spec say the load is 4-6 ohms. The output must be at some incredible phase angles.

I have the XPA-5 (200w/ch 8ohms) driving my Legacy Focus mains. They have three 12" woofers, 2 7" mids and two tweeters with only 94db efficiency instead of the Kappa's 102db. It has no problem driving the Focus. I've had them bi-amped before which helps with adjustments, but I didn't really notice a difference in power.