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In Reply to: Re: The trouble with wall-wart supplies... posted by SCBailey on November 16, 2006 at 14:11:05:
For example, Mouser sells one from B&K Precision for $225. Part number 615-1621A is a single supply that can produce 0 to 18 volts at 0 to 5 amperes, and is switchable for constant voltage or constant current. It has a digital display. For $220, part number 615-1626A is rated for 0-30 volts at 0-3 amps, and has analog meters.There may be cheaper versions of this kind of supply around: check the electronic supply houses. The DC from these would be far superior to that from a wall-wart, but you still have to deal with any AC noise they generate. You can build your own, but you would have to know where to find surplus parts cheap to make something that costs significantly less and works as well.
I'm not aware of any audio equipment manufacturer that does not cut corners somewhere. Any piece of equipment can be tweaked to sound better, and it is sometimes the hideous prices that prevent more audiophile tweakers from experimenting with the snootier gear. The retail price is some multiple of the manufactured cost, so a few dollars extra spent on parts turns into a much higher retail price. If the wall-warts create a bad impression of the MF gear, look at the competition carefully to see where they have avoided spending money.
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Follow Ups
- I'm talking about lab bench supplies. - Al Sekela 21:15:53 11/16/06 (0)
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