matjans said:
The ones I have compared largely have been car amps. I have compared some home amps but it has been a few years so I wouldn't use that as an example. I have used a few class D amps in car envrionments and have found there is a large difference between a regular one and a great one. I just would like to see some of the people on this site post some comparative analasis of their class D amps when put against what I beleive is generally considered (at least I consider) the highest of the high end amps available. I think that at some point class D amps will compare to these usualy large class A amps but I am not sure that they are there yet. I would like this to happen though because that would mean that the truly super high end would become something much more affordable.
Hi,
I will be the first to admit I'm not fully up to speed on car audio.
However you've volunteered JL as a possibly good brand.... and so I'll use them to make my point.
I took a quick look at their web page.
I've seen in one class .... slash amps I think.. they offered two main types. "Subwoofer" and "full range".
I could look it up for a bit of a laugh:
High-Damping Class D Circuit with discrete control circuitry (U.S. Patent #6,441,685)
But it is already labelled as being for sub woofer use.
Now click on their "full range" amp in the very same "slash" category..... ooops.. they changed it to class A/B???
Don't let them fool ya, they're using the 10 cent circuits of yesteryear, and this is on what they're calling their flagship line.
I've noticed the very same thing with their E class.
Thanks for bringing up JL it was an excellent example to make my point with.
I will be the first to admit I'm not fully up to speed on car audio.
However you've volunteered JL as a possibly good brand.... and so I'll use them to make my point.
I took a quick look at their web page.
I've seen in one class .... slash amps I think.. they offered two main types. "Subwoofer" and "full range".
I could look it up for a bit of a laugh:
High-Damping Class D Circuit with discrete control circuitry (U.S. Patent #6,441,685)
But it is already labelled as being for sub woofer use.
Now click on their "full range" amp in the very same "slash" category..... ooops.. they changed it to class A/B???
Don't let them fool ya, they're using the 10 cent circuits of yesteryear, and this is on what they're calling their flagship line.
I've noticed the very same thing with their E class.
Thanks for bringing up JL it was an excellent example to make my point with.
Speaking of car audio, has anybody tried out panasonic's newer high-end decks? The top three models - CQ-C9901U, 9801,9701 - all use a "digital" amp. They are shown here:
http://www2.panasonic.com/webapp/wc...rogram=11002&cachePartner=7000000000000005702
I wonder which technology they use in these decks, and how they sound?
Edit: Thats interesting, these decks use tripath chips, as told by Crutchfield:
http://www.crutchfield.com/S-UHYdaT84w9k/cgi-bin/Prodview.asp?readmore=true&g=300&I=133C9801#Tab
Now to find out which chip they use.......
My guess is the TAA4100(A) chip, a 4x62 watts chip that can operate at 14.4v, and was designed for automotive head units.
http://www2.panasonic.com/webapp/wc...rogram=11002&cachePartner=7000000000000005702
I wonder which technology they use in these decks, and how they sound?
Edit: Thats interesting, these decks use tripath chips, as told by Crutchfield:
http://www.crutchfield.com/S-UHYdaT84w9k/cgi-bin/Prodview.asp?readmore=true&g=300&I=133C9801#Tab
Now to find out which chip they use.......
My guess is the TAA4100(A) chip, a 4x62 watts chip that can operate at 14.4v, and was designed for automotive head units.
High End Class D
In my opinion, having heard something from the new generation of Class D emerging this fall, i would say that Class A and Class A/B is now largely obsolete! Or completely obsolete actually. The last small fallbacks on Class D is now overcome, and a thing of the past. And in any aspect Class D will be better that even the best Class A or A/B amplifiers. Not in years, but in .. months!
Just to make clear, i am not talking about those products that were on sale 1-2 years ago or even now, i am talking about the next generation, coming on sale this winter and on.
In my opinion, having heard something from the new generation of Class D emerging this fall, i would say that Class A and Class A/B is now largely obsolete! Or completely obsolete actually. The last small fallbacks on Class D is now overcome, and a thing of the past. And in any aspect Class D will be better that even the best Class A or A/B amplifiers. Not in years, but in .. months!
Just to make clear, i am not talking about those products that were on sale 1-2 years ago or even now, i am talking about the next generation, coming on sale this winter and on.
We have been there, it's was indeed quite interesting. Altough not all papers was at a very high academical level. Anyhow it was very interesting to speak a lot of people behind the Class-D companies.
And it was funny to see that a lot of companies were shocked about the performance of the UcD Class-D feedback technology.....
Regards,
Jan-Peter
And it was funny to see that a lot of companies were shocked about the performance of the UcD Class-D feedback technology.....
Regards,
Jan-Peter
Can't blame me for trying
*sarcasm*I thought class D already sounded like high end audiophile amps. Are you now telling me that they don't but they might by the time winter comes?
I think that it is very obvious that class D is still in it's baby stages and has a lot more potential to be realized. I don't know how class D could compare to something like the pass labs XA160 in it's current stage but I feel it will get there in the next three to five years (optimisticly).
*sarcasm*I thought class D already sounded like high end audiophile amps. Are you now telling me that they don't but they might by the time winter comes?
I think that it is very obvious that class D is still in it's baby stages and has a lot more potential to be realized. I don't know how class D could compare to something like the pass labs XA160 in it's current stage but I feel it will get there in the next three to five years (optimisticly).
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