Black Cube Power supply Post #1

mantisory · 21st September 2007, 06:45 PM

I originally posted this in 'analogue' but i think it may belong here...
I was interested in getting the PWX power supply for my lehmann black cube, but they are not currently CSA approved for sale in Canada. So, i figured I may be able to build one.
According to stories on the web the new PWX uses a special 30VA toroid transformer that has a grounded isolation coil between the primary and secondary...obviousy i will not be able to source this, but i could start with a 30VA tranny and go from there. a couple questions though:
Does anyone here know what the power requirements of the Black Cube are, or have experience build an upgraded PS?
I have a PS i built for my bugle that runs about 15V, but...
anyway, thanks for your help.
B

gni · 27th September 2007, 05:16 PM

That is a tough one. . . might go back to manufacturer and see if
they will help. . .

mantisory · 27th September 2007, 06:07 PM

yeah, i dunno...maybe i will see what kind of voltage/current is coming out of the current supply and go from there - i have seen a black cube for sale somewhere where the person had used a welbourne labs ps-1...

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21st September 2007, 06:45 PM	#1
mantisory diyAudio Member Join Date: May 2002 Location: toronto	Black Cube Power supply Post #1 I originally posted this in 'analogue' but i think it may belong here... I was interested in getting the PWX power supply for my lehmann black cube, but they are not currently CSA approved for sale in Canada. So, i figured I may be able to build one. According to stories on the web the new PWX uses a special 30VA toroid transformer that has a grounded isolation coil between the primary and secondary...obviousy i will not be able to source this, but i could start with a 30VA tranny and go from there. a couple questions though: Does anyone here know what the power requirements of the Black Cube are, or have experience build an upgraded PS? I have a PS i built for my bugle that runs about 15V, but... anyway, thanks for your help. B

27th September 2007, 05:16 PM	#2
gni diyAudio Member Join Date: Sep 2006	That is a tough one. . . might go back to manufacturer and see if they will help. . .

27th September 2007, 06:07 PM	#3
mantisory diyAudio Member Join Date: May 2002 Location: toronto	yeah, i dunno...maybe i will see what kind of voltage/current is coming out of the current supply and go from there - i have seen a black cube for sale somewhere where the person had used a welbourne labs ps-1...

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