hypex ncore

[Telstar]

Originally Posted by Julf

Depends on how you define "clean". Is "clean" response within +-3 dB? Or an absolute upper limit at least 2 * higher? Or something else?

-3dB at 30khz is fine, including also the eventual amplifier rolloff.
With clean i meant two things:
*perfect 15khz squarewave
*no dithering/aliasing artifacts up to 30khz (better 50)

[mr_push_pull]

anytime the HF debate comes up, I can't help but remember that most of the audio catalog available today is in a format that can't hold any audio info past 22kHz. last time I checked, oversampling can't "reinvent" the information that has been low-pass filtered at the recording side in order prevent aliasing.
I've read many positive reports about super-tweeters. funnily, the latest I can remember came from a guy that used RedBook. talk about credibility...

[StigErik]

-3 dB at 30kHz will not give you "perfect" 15kHz squarewave.... not at all. You'll need bandwidth far into the MHz range for that.

[Julf]

Originally Posted by Telstar

*perfect 15khz squarewave

Why? Nobody listens to 15 kHz square waves.

*no dithering/aliasing artifacts up to 30khz (better 50)

Again why? if you can't hear those artifacts, all you need to do is make sure they don't cause any intermodulation or distortion.

[Julf]

Originally Posted by mr_push_pull

anytime the HF debate comes up, I can't help but remember that most of the audio catalog available today is in a format that can't hold any audio info past 22kHz.

Maybe some of us only listen to quadrophonic vinyl from the 70's

[mr_push_pull]

Originally Posted by StigErik

-3 dB at 30kHz will not give you "perfect" 15kHz squarewave.... not at all. You'll need bandwidth far into the MHz range for that.

I guess he meant perfect as in as much as the scope's display allows, given certain timebase

[Julf]

Originally Posted by StigErik

-3 dB at 30kHz will not give you "perfect" 15kHz squarewave.... not at all. You'll need bandwidth far into the MHz range for that.

Well, to be precise, to get perfect square waves you need unlimited bandwidth. Hmm... Maybe there is a need for terahertz amps...

[Julf]

Originally Posted by mr_push_pull

I guess he meant perfect as in as much as the scope's display allows, given certain timebase

"These claims are being made by people with cheap scopes with limited resolution"

[mr_push_pull]

Originally Posted by Julf

Maybe some of us only listen to quadrophonic vinyl from the 70's

quite possible.
personally I have such varied musical tastes that I can't imagine myself in that position. music can deliver such a wide range of emotions that I find sticking to certain genres/time windows very restrictive in that regard. but I digress.
well...

[Julf]

Originally Posted by mr_push_pull

personally I have such varied musical tastes that I can't imagine myself in that position.

I raise you a tuvan throat singer accompanied by 3 mustaphas 3 and one fake cuban conjunto doing kraftwerk covers...