Robin Bowes;542768 Wrote: > On 03/05/10 00:39, mswlogo wrote: > > > > In the correction I said your not actually getting more dynamic > range > > but your better fitting the data to the window of dynamic range you > > have by letting it clip a little. > > Yes, so you're actually *reducing* dynamic range. > > > If folks are using "The Knob" I highly doubt many use it from > strickly > > at the top end. They either think it is safe to use for like 30dB or > > not. I swing my analog easily 30dB and if folks do that digitally > they > > are killing the quality of the audio. Then folks jumped in saying > you > > won't hear the loss at low levels (B.S.). Granted there might be > VERY > > few that have matched there analog gain such that they stay in the > top > > 10dB (digitally). But I suspect that is extremely rare. > > I think you'd be surprised - it's actually a well-known and understood > issue. There are a couple of pages on the Slim Devices wiki: > > http://wiki.slimdevices.com/index.php/Connect_To_PowerAmp > http://wiki.slimdevices.com/index.php/Digital_Volume_Control_and_SNR > > and a set of test results someone performed: > > http://mysite.verizon.net/forumwebspace/RightMark/Test%20Reports/Volume.htm > > R.
Regarding last test. Volume of 20 says it's "50%". 50% is 6dB that's 1-bit of attenuation !!! Since that article was publish I believe it's now a log (dB) scale. I believe it used be linear. Not sure on that. But the test clearly says "50%". If anything it should be much clearer what they mean. Because it sounds like percent to me. Because if it was 50% of the log scale that would be 48dB and I assure you the SqueezeBox DAC would not output the low 16bits of the DAC that well. Totally misleading. Regarding 2nd test. Quote from that article. "...it does NOT mean that those first 8 bits of attenuation are "free"." He even states DACs only do 20bits. So if anything you might argue 4bits are ok. But 4-bits are not free either. How long do you want to go with this. -- mswlogo XP > Cat5 > Transporter/DuetController > SPDIF > Meridian G68 > DSP6000, DSP5500HC, DSP5000 XP > Cat5 > SB3 > SPDIF > Meridian DSP5000 XP > Cat5 > DuetReceiver > SPDIF > Meridian G91 > DSP5000 'My Transporter Setup' (http://forums.slimdevices.com/showpost.php?p=350741&postcount=45) 'Hitch Hikers Guide to Meridian' (http://www.meridianunplugged.com) ------------------------------------------------------------------------ mswlogo's Profile: http://forums.slimdevices.com/member.php?userid=9090 View this thread: http://forums.slimdevices.com/showthread.php?t=77725 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
