JohnSwenson;557729 Wrote: > The switcher that came with the SB3 was very poor. It radiated a lot of > noise, AND sent a lot of noise back down into the AC main as well. > There was some going into the SB3 as well, but my findings were that > the radiated noise and the noise sent into the mains was usually far > more of a problem. > > The switcher that comes with the Touch is much better, it produces a > lot less contamination of the environment. But its not perfect. A > properly designed linear supply can still produce a lower noise > environment. > > Note I'm not talking about the actual signal coming out of the Touch. > My measurements show very little effect on the signal out from the PS > quality. The Touch has a much better power supply immunity than the > SB3. > > Unfortunately linear supplies are not created equal. Some can still > produce radiated noise and send noise back into the mains. Its > definitely possible to have a linear supply that will sound worse than > the switcher that comes with the Touch. Because of this I'm not very > hot on getting a cheap linear supply. While they probably can improve > the sound of an SB3, (ANYTHING will improve the sound over that thing > that came with the SB3) there is a good chance they would actually make > the Touch sound worse. > > Price is not necessarily a good harbinger either. There are some > expensive supplies that still send a fair amount of noise back into the > mains. If you are going to get an expensive one make sure you can > audition it first, or get a money back guarantee. > > Note that I build my own supplies so I have NOT bought commercially > available ones, I cannot say which ones are good or not, don't ask. > > If you are a hard core audiophile and like to tweak things to get the > absolute best sound possible, go ahead and try linear supplies. (I have > a design for a really good one if you are interested in making your > own.) If not, just use the supply that came with the Touch. > > John S.
Hi John I'll bite...would it be possible to post a schematic of your favoured supply? :) Thanks -- Tripmaster ------------------------------------------------------------------------ Tripmaster's Profile: http://forums.slimdevices.com/member.php?userid=33519 View this thread: http://forums.slimdevices.com/showthread.php?t=79977 _______________________________________________ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
