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In Reply to: RE: Dacs with a great bass. posted by beppe61 on April 10, 2015 at 03:13:25
Interesting how I never before considered Bass important because my loudspeakers are really not all that large.
However, I will note that I believe there is such a thing as the 'illusion of bass', sort of the envelope of the bass. So, while the loudspeakers cannot shake the room, there is a leading edge and a trailing edge that may suffice and if messed up, merely confuses the music line.
Also, I think the power supply of the DAC has got to be the most critical because not only is the DAC handling the audio range, but it is oversamplying at, at least, 8x the audio cutoff frequency, so the noise riding on the power supply has additional freq range in which to affect the results.
Follow Ups:
"Also, I think the power supply of the DAC has got to be the most critical because not only is the DAC handling the audio range, but it is oversamplying at, at least, 8x the audio cutoff frequency, so the noise riding on the power supply has additional freq range in which to affect the results."
The "8x the audio cutoff frequency" is where the analog post filter is needed..... The RF noise reflected to the power supply (and surrounding electronics) is from the switching of the bits (essentially square waves, whose spectra run to RF), which occur more frequently at higher rates. So the noise spectra isn't so much related to sample rate, but higher rates will increase the intensity of the RF noise.
The "illusion" of great bass and great bass might be perceived totally differently. Great bass, more than anything else, sustains clarity in large scale and dynamic music. The "illusion" might call attention to the bass, but if the overall clarity of the performers suffers, the bass IMO isn't so hot.
Hi and thanks for the interesting reply.
Let me comment here below
" Interesting how I never before considered Bass important because my loudspeakers are really not all that large "
i come from a similar experience. My speakers have never had a woofer bigger than 6". I never had the feeling of missing anything.
Then i went to a friend's house and we listened to some of my cds on his JBL Horizon ... i was missing a lot, a lot indeed.
I think that the low part of the spectrum gives a nice sensation of room filling ... sound with space and body.
" However, I will note that I believe there is such a thing as the 'illusion of bass', sort of the envelope of the bass. So, while the loudspeakers cannot shake the room, there is a leading edge and a trailing edge that may suffice and if messed up, merely confuses the music line "
it could be but there are instruments that cover the lowest part of the audio range. If the speakers cannot reproduce that part the outcome cannot be fully realistic. For instance the piano. No minimonitor can give a realistic reproduction of a piano.
" Also, I think the power supply of the DAC has got to be the most critical because not only is the DAC handling the audio range, but it is oversamplying at, at least, 8x the audio cutoff frequency, so the noise riding on the power supply has additional freq range in which to affect the results "
it is also my sensation that digital is very sensitive to noise in the supply. Probably more than analog.
A better elimination of this noise could improve sound quite remarkably.
The more common mods on cd players were on PS of clock and dac chip.
So i think it is a very critical aspect.
Thanks again.
Kind regards,
bg
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