Can you confirm this is on all delta cards? 44,66, 1010Rack? We have many 44's here on our production machines and have not encountered problems like that, not currently using any inputs on the 1010 rack. I seem to recall opening up a 44 breakout one time and it was completely passive, never bothered to reverse engineer the PCI card though, and haven't had the 1010 Rack opened up. anyway I guess YMMV. looks like the OP wants ADAT I/O anyway. There was at one time an ADAT box that could plug into a detla 1010 Rack PCI card, but they are hard to come by these days, basically only on Ebay.
I have heard mixed reviews of the Behringer ADAT converter, mostly that the MIC Pre is permanently inline, the line level input just gets padded down a bit and run through the pre. Most of the complaints are from studio guys (which Is how I got into audio in the first place), could be fine for broadcast, and the price is certainly budget friendly, though I am a firm believer in you get what you pay for (up to a certain point). Also, although MOTU makes some nice hardware with ADAT I/O, there will likely be no linux support for them ever. MOTU is not supportive of linux, one might say even actively hostile(or perhaps just protective of their IP) as they won't even share the needed info for 3rd parties develop a driver. Nathaniel C. Steele Assistant Chief Engineer/Technical Director WTRM FM On 9/28/2011 10:51 AM, Rob Landry wrote: > > On Wed, 28 Sep 2011, [email protected] wrote: > >> I've run into similar issues with the M-Audio Delta cards - a need to >> put isolation transformers in the audio lines to get a clean sound. > A client of mine is using those cards in two studios. In the air studio, > where he is only playing audio, they are fine, but when he installed the > cards in his production room he had hum on his record inputs at -45 dB or > so. When we looked at the cards closely, we found that the "balanced" > inputs were single opamps with (if I remember right) 10K ohms in series > with the inverting input and 10K ohms going to ground on the other side to > create something that measures balanced but has no common-mode rejection > at all. So, we added Western Electric 111C coils. > > What's amazing is that a piece of technology made by the phone company in > the 1930's still sounds as good as anything that's ever been developed > since. > > > Rob > _______________________________________________ > Rivendell-dev mailing list > [email protected] > http://lists.rivendellaudio.org/mailman/listinfo/rivendell-dev > > > _______________________________________________ Rivendell-dev mailing list [email protected] http://lists.rivendellaudio.org/mailman/listinfo/rivendell-dev
