Krell amp upgrade question


A little background: I used to drive a full B&W Matrix home theatre system (801s2, 804s1, 805, center HTM) with a combo of Krell KAV 250a x2, and 250a/3 amps. I was very happy with the sound for both stereo and HT, and only had a ground loop issue with the front mains - thought due to long XLR runs (>15ft) and solved with "isolating" XLR plug adapters.
Fast forward to today: I just picked up a gorgeous pair of B&W N800 to replace my Matrix set. I was planning on bridging each 250a as pseudo-monoblocks but then need to decide how to run the rest of the HT. I still need to successfully drive a B&W N HTM-1 center, but the surrounds have become in-ceiling or B&W WP-1.

Options:
- acquire another KAV 250a (very difficult to source)
- bridge 2 channels of the 250a/3 for Center, and acquire another 250a/3 (also difficult to source)
- sell the 250a/3 and replace with a Krell Showcase 5/ other "newer" but less powerful Krell multi-channel amp

Of note: the 250a/3 I currently have may need service as I am noticing crackling during playback - although this may be from source material, and the ground loop is still present - although will most likely be minimally noticed in surround speakers/ can be eliminated with the isolating XLR plug adapters.

It is NOT an option to scrap everything and buy all new amps!
Appreciate thoughtful comments.
doctock993
Just because Krell doesn't print the specs for 2 ohms in the manual, doesn't mean it won't be able to handle the load. I think specs for 2 and 4 ohms are more important to people now because brands like B&W and Martin Logan are more available due to them being sold in places like Best Buy. A typical receiver just won't cut it for those types of speakers, despite their power ratings. But you do have a point about what's printed in the manual. Personally, I would like to see more specs in the manual to avoid confusion. Having owned the amp, I think it will be fine used either bridged or 2 channel.

One thing you can do that should answer some questions, is to run the amp you have bridged into just 1 of your speakers as a test. If the amp has trouble driving the one speaker bridged, you can expect the same results if you get another amp. Also, many people report that bridging a stereo amp lowers the sound quality. Of course, results will vary depending on many factors, but I think its something to keep in mind.

If you do try the single amp bridged, make sure you compare it to just 1 speaker non bridged. It makes the comparison much easier.
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"Why is the KSA 250a/3 "definitely better than the Showcase"?"

The KSA has a lot more power. I've heard the showcase strain under loads that the KSA would not. I think it sounds better, as well.
Per Krell awesome Tech support this morning: "No issue driving < 8 ohm when 250a is bridged."
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I'm currently using 2 of the 3 channels of the 250a/3 to run the N800s. I'm noticing that the N800 love to suck up power and as I have the 250a that I can easily bridge, I was thinking they could happily power them. Then all I would need to do would be find a way to amp the HT side of things.

Why is the KSA 250a/3 "definitely better than the Showcase"?
"Options:
- acquire another KAV 250a (very difficult to source)"

Actually, I've seen a few of those listed recently, and for low prices. Its a pretty good amp. I used to have one. Its definitely better than the Showcase. Have you tried just 1 running stereo with your N800's? You should have enough power with just 1 amp.