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HI! I have sometimes problems with "ground" hum from the power on my set-up. The problems are most often with my 78 rpm turnable playback system consisting of a Rek-O-Kut turnable, Pro-Ject pre-amp, Packburn 323A and Rek-O-Kut re equalizer and de-hisser. It is not quite permanent. BUT; when it sometimes appear it seems like it also make the music signals sound distorted, especially at the end of the records. May such hum also have something to say for the music signals, like distortion, maybe, or will it just cause that "famous" "ground" problems hum sound from the loudspeakers? All the best Jan -----Opprinnelig melding----- Fra: Association for Recorded Sound Discussion List [mailto:[log in to unmask]] På vegne av Goran Finnberg Sendt: 29. august 2011 19:48 Til: [log in to unmask] Emne: [ARSCLIST] Dawn of Digital update -- at long last, clarity on Philips' digital first Tom Fine: > A former Soundstream employee finally set the record > straight on this. Philips' first all-digital release > on LP was John Williams "Pops In Space," 1980. The > original LP has a banner across it stating "FIRST > Philips Digital Recording." Philips' engineers wanted > to use a digital recorder they had developed, according > to this person. But the record's producer, George Korngold, > had used Soundstream the previous year to record the > soundtrack to "Kings Row" and requested Soundstream be > used on the Philips session. http://www.mancini99.freeserve.co.uk/Michael_Mailes.html DECCA recording engineer Michaels Mailes says: Interesting perhaps to note that in 1980 John Williams became musical director of The Boston Pops orchestra. I had made recordings with Arthur Fiedler/Boston Pops and had experience working in Symphony Hall. Philips made a contract to record J.W and found that they didn't have equipment or crew in America at the time of the 1st proposed recording date. Decca had recording equipment in the States having made contracts with several orchestras. Logical conclusion! Ask Decca! Together with Stanley Goodall (Recording engineer) we made J.W's first recording; 'Pops In Space' recorded on the Soundstream system. ----------------------------- So it would seem that this disk was not only done on the Soundstream system but was also engineered by Michael Mailes and Stanley Goodall of the DECCA/London company using their Neumann M50 tree technique and equipment feeding the Soundstream digital recorder. > Philips' engineers wanted to use a > digital recorder they had developed, I really do not think that this is correct. Philips recording centre never had any plans making their own digital recorder as did DECCA/London. http://www.mancini99.freeserve.co.uk/Decca_1.html Philips used the Sony 1610 converter with a suitable video recorder in the very beginning as did most everyone else. Later on they moved on using the dcs 900 converter. -- Best regards, Goran Finnberg The Mastering Room AB Goteborg Sweden E-mail: [log in to unmask] Learn from the mistakes of others, you can never live long enough to make them all yourself. - John Luther