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In Reply to: RE: Matching AMPs with Speakers posted by Leo loves music on August 18, 2024 at 11:12:26
What is the question?
Follow Ups:
. . . 42
. . . in theory, practice and theory are the same; in practice, they are different . . .
CJ 17LS2 -> Cary V12 + Plinius SA102 -> B&W 801
+ other tweaks.
Very good result. Happy.
Those two amps have different visions.
Yes. I have B&W 801 S2 speakers.
There are quite a few folks who had bad luck with these speakers. Finding a matching AMP can be difficult and expensive. For example:
https://forum.audiogon.com/discussions/warm-sounding-preamp-suggestions
wanted to clarify why you showed two very different amplifiers.
Are you biamping your 801s using both - presumably SS on bottom with tubes on top?
.
My point here is not bi-amp. My point is that matching AMP can be very expensive and not elegant.
I fully understand the challenge of speaker/amplifier matching. Quite a few amps regardless of power don't deal well with the reactive loads.
Anything that Nelson Pass designed does since the 800A. His partner used Dayton-Wrights and Threshold demoed using stacked DWs at shows in the early 80s. High powered tubes like my VTLs work very well also.
In your case, the Cary would likely not be the best choice for driving the woofers. Similarly, the Plinius might not be the most delicate for the top.
I have provided a link. But everybody is too lazy to read. So I copied his post here. Hopefully he doesn't mind the copyright issue.
I have provide a link. But everybody is too lazy to read. So I copied his post here. Hopefully he doesn't mind the copyright issue.
wasn't going to be antagonistic about the speaker.
I confess that I prefer a "tilted" frequency response with a bit of rise at the bottom and corresponding attenuation at the top. That's what I hear with live instruments.
Bright is not what I seek. Cary is known to coddle the signal. :)
In order to fix the B&W I used the following technique:
1. bi-amp
2. DIY BAF (bass alignment filter)
3. DIY bandwidth control
I haven't heard the 801 S2 so I can't comment on them. I have experimented with my 801 S3 with different amps and configurations from active to passive with different results. However, it has a frequency response of 24Hz to 25kHz at -+ 6dB with a nominal impedance of 4 ohms and a sensitivity of 87 dB. I have found that they do require lots of power to make them sing properly as they have a swingy impedance that can go as low as 2 ohms. This means it will require a powerful amp with a very stable power supply of 2 ohms.Presently, I'm driving them with a Krell EVO 402 power amp that puts out 400w/c on 8 ohms and 1600 w/c on 2 ohms together with the Krell EVO 202 preamp. The sound is very dynamic and visceral devoid of brightness on the top end.
Edits: 08/22/24
Power is not the issue.
Edits: 08/22/24
Everybody has its own preferences. I have a dedicated listening room with ample of room tunes which means the room is not bright to say the least. As I said I'm happy with the way the 801 S3 sounded as it synergized with the listening room much better than the Genesis III speakers that I also have.
"The room is too bright, there is glass in 2 of the walls, but that isn't going to change."
.
"Changing the electronics made some difference, but usually not enough."
He is also correct
"I can tell you from direct, first hand experience, that in order to fix your problem, you need to get rid of the speakers. I can also tell you that you will definitely get rid of them. The only variable will be how much money spend trying to make them work."
8 Ohms 600W
4 Ohms 1,200W
2 Ohms 2,400W
If this Krell doesn't have enough power, what else has? spaceX?
You should try it to see if you like it or not.
Yes, everybody has his own preference. I do not like bright at all. I need midrange correctness.I have achieved my goal. But I didn't try to matching the AMPs. I just used some natural sounding AMPs.
Thanks for the help.
This guy is correct again
"Keep in mind that any bandaid components you buy now, will probably not be a good match for whatever speakers you buy when you replace the B&W's."
Edits: 08/22/24
I also abhorred the bright-sounding system as well...however, as always there's a place for everything and everything has its place. The bright-sounding system can be useful if the listening is unusually dead.
CJ 17LS2 -> Cary V12 + Plinius SA102 -> B&W 801
+ other tweaks.
I was wondering the same thing.
I do like the Cary V12 in his setup. I had a pair of AES/Cary SixPac monoblocks with 6 EL34 tubes per amp. They were wonderful and a true bargain. I replaced a pricey CJ amp with the less expensive SixPacs they were that good.
The beauty of Cary V12 is that, it can run 6 tubes per side, or 4 tubes per side, or 2 tubes per side. UL(class AB) or Triode (class A) with a switch flip.
I assume SixPac can do the same.
Yes, SixPacs could do the same but I always ran mine with 6 EL4 ea.
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