rowuk
Been here a while!
Pain in the ass, ex-patriot yank living in the land of sauerkraut
Posts: 1,011
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Post by rowuk on Sept 25, 2007 9:38:53 GMT
To all concerned!
I record many of the live concerts that I play. The general setup is a stereo pair of Schoeps for the big picture and a small handful of support microphones to compensate for deficiencies in the acoustics (big churches with +5 seconds of reverb for instance).
I use a Focusrite saffire 8 channel AD/DAC and it can get its power one of 2 ways, over the firewire bus (sound is ok) or with a dedicated AC (sound is MUCH better) power supply.
The present external (non-switched) PS has 1x 15VAC 1.4A and 15VAC 0.6A. There has to be a better way!
Any suggestions? Perhaps recreate a 50HZ sine wave of sufficient power? General filtering? Better isolation (no $3K kettleleads for mobile recording applications!)?
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Deleted
Deleted Member
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Post by Deleted on Sept 25, 2007 21:49:25 GMT
rowuk It is a bit hard to give general advice on a subject like this without having some knowledge of the equipment's internal power supply circuitry . Do you have a schematic of the unit's PSU section ? Perhaps even an internal high resolution photo of that section MAY help. It may be possible to feed in regulated DC, or even use a higher rated 15 +15VAC toroidal transformer e.g. 50VA, but without further information, one can only guess. SandyK
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rowuk
Been here a while!
Pain in the ass, ex-patriot yank living in the land of sauerkraut
Posts: 1,011
|
Post by rowuk on Sept 25, 2007 22:58:36 GMT
will try and open the bonnet next week. I'll be making music (Brückner and Bach) and drinking Rioja this weekend.
I was thinking about making a 50 Hz sine wave generator of sufficient power................. Free of RFI..........
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