HELP Need frequency response details for Digi Pre past 20kHz

[Schmiglish]

Hi, im looking for information, a graph hopefully showing the dB dropoff after 20kHz of the Digidesign Pre Hd preamp.

Any information which can point me towards the answers would be fantastic as i cannot seem to find anything on the web.

Thanks in advance!

J

[albee1952]

This may be a tough one to answer. Regardless of what the analog portion can deliver, the converters have nyquist filters, which restrict the upper limits(maybe that would be worth a google search for more reading)

[Schmiglish]

Hey Cheers for the reply. I tried that already with not much luck. I think i may have to just complete the tests myself at this point.

These graphs should be available tho.. :/

[musicman691]

Originally Posted by albee1952

This may be a tough one to answer. Regardless of what the analog portion can deliver, the converters have nyquist filters, which restrict the upper limits(maybe that would be worth a google search for more reading)

But wouldn't the sample rate change the Nyquist filter spec so that if for instance you recorded at 96 KHz the filter cutoff would be higher than for 44.1 KHz?