Soundcraft Power Supply

[Chrome Heart]

Hey all, is there an "off the shelf-ish" power supply replacement for a 200B Soundcraft. Im not interested in rebuilding the original again.

 

[Chrome Heart]

Nobody? No suggestion for a power supply replacement? Something with a bit more to offer? Help me out fellers. Ill build it myself if you point me in the right direction.

 

[pucho812]

plenty of companies can do you a PSU or you can piece one together from several singled ended PSU's  in one box. What are your required volts and amps?

 

[analogstudio7]

Hi,

Try GRS Pro Audio. The specialize in PSU's for recording consoles. www.grssystems.com

I have 4 different PSU's from them that are now over 10 years old and still working great. Very high quality units that are built like tanks with a lot of extra current output versus the original OEM PSU's!

I think ther also have some of the units on Ebay too, but not sure.

Cheers!

 

[MarkusBass]

Soundcraft 200B has very basic power supply: +/-17V (with LM317/337) and +48V (using discrete parts). You can find such a circuit in any contemporary mixer. But I haven't seen them as a separate modules. And why you don't want to rebuild the old one? It should be reliable under the condition that LM317/337 are properly cooled (I mean attached to a haetsink) and +48V voltage is not shorted to the ground. I could rebuild it for you but I'm a little bit far away. Can you post a photo of the old PSU?

Mark

 

[Chrome Heart]

Thanks for the info. Ive already rebuilt it once, and since Im using it in a 24 ch frame I thought Id like a supply with a bit more amperage.

 

[pucho812]

if you buy an adjustable PSU with a single out put and adjust it for 17VDC, then get a second exact same psu and adjust it for 17VDC. Then take the first PSU wire the output V+ to the multi pin cable going to your console and ground the V- on that first PSU. That will give you your +17.  On the Second PSU take the V+ and wire it to ground  and wire in the v- out to the multi pin cable going to your console this will give you -17Vdc. There you have now made a bi-polar PSU for 2 single ended units.

On my mini trident(16 Channel series 65) I did just that. I got 2 18V PSU and wired them in to get my +/-18VDC needed and added a 48VDC supply for phantom.  Even put them into a medium size circuit breaker box as I was trying to make it as inexpensively as possible.  Works flawlessly and sounds awesome.

 

[MarkusBass]

Thanks for the info. Ive already rebuilt it once, and since Im using it in a 24 ch frame I thought Id like a supply with a bit more amperage.

Then the easiest way is to use very similar IC but with a higher curent output, something like this one: http://www.linear.com/product/LT1083
Of course I would start from actual curent requirements and checking the transformer that you have, and looking at the heatsink (whether it needs to be increased). This is the cheapest way to solve the problem you have.

Mark

 

[Chrome Heart]

if you buy an adjustable PSU with a single out put and adjust it for 17VDC, then get a second exact same psu and adjust it for 17VDC. Then take the first PSU wire the output V+ to the multi pin cable going to your console and ground the V- on that first PSU. That will give you your +17.  On the Second PSU take the V+ and wire it to ground  and wire in the v- out to the multi pin cable going to your console this will give you -17Vdc. There you have now made a bi-polar PSU for 2 single ended units.

On my mini
trident(16 Channel series 65) I did just that. I got 2 18V PSU and wired them in to get my +/-18VDC needed and added a 48VDC supply for phantom.  Even put them into a medium size circuit breaker box as I was trying to make it as inexpensively as possible.  Works flawlessly and sounds awesome.

I recently rebuilt the Paragon Flickinger console and did a similar scenario. I used 10 supplies in a rack to make 5 +/- pairs supplying power for lights, EQ's, pre's, meters etc.