gregklanderman wrote: > Thank you for all the great info Jeff! It may take me a bit to digest > it all and get back to you with additional questions. It looks like > HifiMediy has a number of amps in different sizes and load impedances. > Do you have the regular or MCAP ones? Do they need any special cooling? > Do you have everything boxed up and hidden in the wall or what? What > speakers are you using? In wall/ceiling? > > So the control side of the SSR is just tapped off the LED on the DAC+, > and then switches power to the PSU which feeds the amp? And you're > using the auto-off plugin too. > > The other option Phillippe mentioned, triggering a raspi GPIO to control > a switch looks fine too, I would just have to find an appropriate > switch. Modifying and recompiling squeezelite should be no trouble. > > Thanks!
Yeah I like the hifimediy amps they sound good even with some high end speakers and (even if I say so myself) slightly gold plated ears. Unit 1 is in the basment attached to a floor beam, has been many years so don't remember wether this is an mcap version or not. This one has a 300VA Toriod, amp and ssr in a RS Steel box its a bit of a squeeze (!) The T2 heatsink is completely enclosed in the box and the box is sealed. The T2's seem to run quite warm even quiescing (about 65-70 C on the heatsink using my engineers finger) but do not seem to get much warmer even when working quite hard. I have not had any reliability issues at all. Speakers on this system are KEF Ci160Q's in the drop ceiling which sound really good while lying in the bath ! Units 2 and 3 are in standard cases these have inside:- 5V 1 Amp SMPSU (For Pi) supplies the Pi via a 1A fuse to the yellow circled inputs on the DAC+ picture 30V 300W SMPSU Raspberry Pi 2 With PiCorePlayer DAC+ HifiMeDiy T2 MCAP Fotek SSR This is even more of a squeeze !! The T2 heatsink is completely enclosed in the box and the box is sealed. The T2's seem to run quite warm even quiescing (about 65-70 C on the heatsink using my engineers finger) but do not seem to get much warmer even when working quite hard. I have not had any reliability issues at all. 2 and 3 have HDMI out and FLIRC's for visualisation and local control (not used often) Speakers are KEF 102/2 and 101/3 Correct, GPIO4 on the PCM5122 feeds the LED on the DAC+ board I hijack this (before the current limit resistor (the ssr is constant current)) to power the SSR. In this way the control is software independent if the output is enabled the power amp switches on, this allows the use of any RPi audio software which supports the DAC+ (I use piCorePlayer which I have found to be excellent and immune from switch off corruption) *Players:* SliMP3, Squeezebox 3 x 3, Squeezebox Receiver, SqueezePlayer, PiCorePlayer on RPi 2 with Hifiberry DAC+ x 2 *Server:* Logitech Media Server Version: 7.9.0 - 1443766458 on Centos 7 VM *Plugins:* AutoRescan / BBCiPlayer / PlayHLS / PowerSave / PowerSwitchIII *Remotes:* iPeng8 / Orangesqueeze / PC *Music:* 383GB, 1269 albums with 17756 songs by 4381 artists mostly FLACs / Last FM / Soundcloud *Want a webapp ?* See http://forums.slimdevices.com/showthread.php?104305-Webapp-for-LMS ------------------------------------------------------------------------ Jeff07971's Profile: http://forums.slimdevices.com/member.php?userid=49290 View this thread: http://forums.slimdevices.com/showthread.php?t=104084 _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/discuss
