lagoausente
Well-known member
I'd consider one of the numerous 12 V to +/-15 V DC-DC converters for the audio supply. A pack of six 1.5 V cells will provide pretty long power life. Adding a pair of 10 ohm + 10 uH/220 uF filter for each channel should get rid of the switching noise.
Phantom power is more of a problem--you might consider my 48 V DC-DC converter design (see some thread in the Drawing Board, still untested though), two stacked 24 V DC-DC converters or a +/-24 V DC-DC converter with floating outputs.
I´m considering buying just a +/- 24, and regulate then to +/- 20 for the Supergreen. It also need +5V and +48. I have a few doubts:
- what out current should be ok?
- Better two 24 converters, or one dual +/-?
- In any case would get 48 V, could take it for the phantom, and at the same time fot the +/- 20 regulation?
I have found this candidates:
http://www.switching-powersupplies.com/shop/dc-dc-converter/module-type/page1.html
this ones have the price online, and seems easy to order, but I´m not sure if the current specs are enough, for example the DKE15A-24 model gives +/- 313 ma.
The other candidate could be: http://www.motien.com.tw/products/v7l.html
There are diferent models, the higher wattage gives +/- 625 ma.
Would like you opinions, or suggestions about other converters.