DaveJS;662573 Wrote: > Regalma1, > > The power supply was plugged in and the Touch was on and playing music. > All voltages that I reported were taken with the Touch plugged in and > streaming music. > > I measured the power supply that came with the Touch when it was not > plugged in to the Touch. In that case, the power supply voltage (for > the one that comes with the Touch) was jumping around. Since there was > no load in this case, I don't think that I can conclude anything. I > would have to splice in to my original power supply cable to learn > more. My Fluke meter jumps around more when not measuring something as > compared to when it is measuring something. For this reason, I never > commented on the stability of the stock power supply. > > I confirmed that the voltage was more steady if the voltage regulator > is closer to the Touch, but it is still beyond me what a linear power > does to improve the sound of a signal that is being passed all > digitally. I believe that it does. Is it line noise? Is it a varying > voltage making the clock run at a different speed and increasing > jitter? I don't know. Sound loss in digital to digital transmission > does not make sense to me. A digital to analog change is pretty easy > to comprehend. Also, how steady does a voltage have to be in order to > not degrade sound? By the end of testing my ears were fatigued, so I > couldn't properly judge the sounds. I did not prove or disprove > anything in terms of audible sound quality improvements due to a > steadier voltage. Also, I do not have an "audiophile" quality system > yet by my standards. Each system will be different.
I just slapped my Fluke 175 across the (off-load) output of my Boom beta switched power supply. It is rock solid 18.08 volts. You should not see any "jumping around" if your PSU and DMM are working properly. -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... Touch(wired/XP) - Audiolense 3.3/2.0+INGUZ DRC - MF M1 DAC - Linn 5103 - full Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Pekin Tuner, Townsend Supertweeters, Blue Jeans Belden Digital,Kimber 8TC Speaker & Chord Signature Plus Interconnect cables Stax4070+SRM7/II phones Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything. ------------------------------------------------------------------------ Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=90742 _______________________________________________ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
