George
See if you can get a listen to these.
http://nuprimeaudio.com/product/evolution-one/?v=7516fd43adaa
See if you can get a listen to these.
http://nuprimeaudio.com/product/evolution-one/?v=7516fd43adaa
Anyone using a Class D amp w/ribbon tweeters?
I'm looking for some feedback about using a Class D amp
with speakers that use ribbon tweeters.
Anyone have any experience? How do they sound?
At least 3-4 years ago I was still believing that ribbon tweeters
were not a good mix with Class D b/c of the sibilance it produced from the tweeters.
But now we have gone from ICE modules to NCore, Pascal, etc
and other proprietary designs (Dig Amp Co) that may not be so bright, digital etch, etc
Anyone know about using more modern Class D amps with
ribbon tweeters while having better control of the high frequencies?
Thanks
Gary
with speakers that use ribbon tweeters.
Anyone have any experience? How do they sound?
At least 3-4 years ago I was still believing that ribbon tweeters
were not a good mix with Class D b/c of the sibilance it produced from the tweeters.
But now we have gone from ICE modules to NCore, Pascal, etc
and other proprietary designs (Dig Amp Co) that may not be so bright, digital etch, etc
Anyone know about using more modern Class D amps with
ribbon tweeters while having better control of the high frequencies?
Thanks
Gary
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- 29 posts total
jackd135 posts08-24-2018 3:39pmGeorge Still the same switching frequency at around 600khz, to me it’s too low for the low order output filters filters to get rid of it all without having bad phase shifts (artifacts) down low into the audio band. That why in older tests you still see switching noise across the top of 10khz square waves. https://www.stereophile.com/images/1212AM1fig02.jpg ) (Unless lately, last year or so Stereophile have been filtering it out in testing, with "Audio Precision’s auxiliary AUX-0025 passive low-pass filter". a high order "but very low power handling filter" between the tested amp and the Oscilloscope picture https://www.stereophile.com/images/418BC600fig03.jpg just so you don’t see the switching noise on the 10khz square wave, which I believe is not the right thing to do, as that filter is not there when you listen because it can’t handle any power at all. Technics SE-R1 switching frequency is around 1.5mhz, better, because it’s phase effects are not into the audio band so much, but 2-3mhz would be best. Cheers George |
I’ve heard sibilance in some recordings over the years , and I hear no top end sibilance produced by the Bel Canto ref1000m. The BEl Canto c5i is a newer model and the top end on that is perhaps the most relaxed of any amp I have owned. In practice, I find fears of Class D deficiencies these days are totally unfounded. i will likely only go with Class D amps moving forward as needed. At one point I considered tube amps but Class D amps put an end to that need, though I still like tube amps as well especially if well matched to rest of system, but I do not like the additional cost of ownership due to maintenance, etc. In teh end I’d rather spend as much time as possible just listening to the music and Class D enables that very well. |
- 29 posts total