2. amps-preamps
  3. 126837-80492

Class D Technology

So I get the obvious strengths of Class D. Efficiency, power output & running cool which allows for small form factors. I also understand the weaknesses somewhat. 1. Non-linear & lots of distortion that needs to be cleaned up with an output filter. 
So my question is, if it weren't for efficiency & power, would there be any reason to own a Class D amp? Do they beat Class A in any other categories that count for sound quality?  
seanheis1
georgehifi's avatar
georgehifi
10,312 posts
 
I believe you won’t find one tech guru here on Audiogon that would recommend a Class-D amp over "big current" linear amps for these kinds of loads, sure they may work, but are you getting the best from them? I think not. 2nd graph
http://www.lippaudio.org/old/MySystems/Scintilla/impedance.html

BTW: Carver 120 and Kronzilla Mark II are NOT big current amps, sure they consume big current, but they won’t push it into speakers load like these Appogee’s

Cheers George

kijanki's avatar
kijanki
4,428 posts
 
It is far from mud slinging, buy it appears that you make strong technical statements on the subjects that you are completely unfamiliar with.  I pointed out units just to show that you don't have any electrical engineering education.  This thread is not too bad, but your crusade against Delta-Sigma converters is plain insane.  Cheers.
georgehifi's avatar
georgehifi
10,312 posts
 
I understand your just protecting your JR120 investment, that "if" you had the knowledge you could have built for 1/8th of the price. http://www.usaudiomart.com/details/649188442-icepower-200asc-modules/

And I’ll bet you’ll be the first to sell it when the technology comes that get’s rid of the switching noises problems without effecting the amps sound.

Cheers George
dlcockrum's avatar
dlcockrum
2,190 posts
 
It’s about sound George. Obviously from your many condescending posts, you consider yourself the foremost "guru". Try a little humility and you might learn something.

Best to you George,
Dave

georgehifi's avatar
georgehifi
10,312 posts
 
Can’t "see the forest through the trees" even though they are presented to you.

The Apogee’s in 1ohm mode were never meant to be driven with tube amps, especially ones like you mentioned, they needed big s/s amps like Krells, Classe, Mark Levinson, yes and even the earlier big JR’s, ones that could pump current into most loads down to 1ohm. You should know this being an owner of a Krell FPB-600c and why didn’t you drive the Apogee’s in 1ohm mode with that, I’m sure you would have changed your mind about the classd-.

Only condescending to the posts that believe that Class-D can drive a speaker to "it’s full potential", when most of the load it represents is around 1ohm, and we’re not even mentioning -phase angles yet. Though I think they will be pretty benign being a planer speaker.

Cheers George
More to discover