On Wed, 1 Apr 2015 19:31:00 +0000 Fons Adriaensen <fons@xxxxxxxxxxxxxx> wrote: > On Wed, Apr 01, 2015 at 10:25:16AM +0200, Ralf Mardorf wrote: > > > The power supply of the ADA8000 gets too hot to mount it in a rack. > > :-) Memories. I was once present at a recording session in an anechoic > room with some of the guys from Parma Univ. They had a small rack with > four of those stacked on top each other and just some space below and > above that cluster. After half an hour they were to hot to touch and > the smell was quit clear. They didn't fail then, but three of them did > the next time they were powered. > > I had eight of them at the CdM, and over the years six of them failed, > in all cases the power supply. > > But mind you, the same problem exists with some RME gear which also > uses cheap $5 chinese PSUs even if the unit costs 2k Euro. > > Ciao, > Memories indeed! In the late 1990s I worked for a company that specialised in (then state-of-the-art) video conferencing systems, these included some quite sophisticated noise, interference and echo cancelling units. While I was there, they were slowly phasing out one type and replacing them with a newer smaller and cheaper units, only every time they tried to pair old with new, the new ones would lock up after a few hours. My one claim to fame there, was that it was me that worked out that (logically) everyone put the new units on top of the old, but those old ones got incredibly hot. Stack them the other way round and although it looked odd, they all worked fine :) I can't for the life of me remember the name of the units, But I know the old ones started with an 'E' and the new ones with a 'D' and I only remember that because we prefixed the notes with those initials. P.S. The video part of the system was separate specialist kit. Computer graphics couldn't make the grade, especially when you wanted to do multiple picture-in-picture :) -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
