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I changed my active crossover and the new one needs more current than I get from a TP Placid HD bipolar. I think I need +/-15vdc and at least 1A. I have 2 Placid bipolar psus sitting idle and wonder if it's possible to wire them in parallel to double the current.
Any advice/comments are appreciated.
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Hi Bill,
I had to power a WaveIO with a Placid HD. This requires 0,750- 0,800 A and it could be done with the Placid.
This is naar the ultimate load of the placid of what I understand. If you attach your heat sinks to the housing it will dissipate more heat.
That was the advise I got from TPA at the time.
So 1,5A seems to be out of the question with one single PSU.
Parallel could work in my opinion. You could experiment with that I guess. But please take a second opinion from one of the experts here.
The Centaur must be up for the job tough or do you really a need bipolar PSU?
Grt,
Jordo
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Thanks Jordo.
I'm not sure about the Amps but 0.5A per side was not enough to power the crossover. For best sound I want plenty of headroom. I do need bipolar to power the balanced input boards.
I worry that joining the psus in parallel might be unstable, joining the 3 outputs together (plus, gnd, neg). Can anyone advise on this?
Cheers, Bill
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Don't run Placids in parallel.
You could just use a LCBPS. You can get up to 1.5A out of each side.
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But then the common (ground) would not be common, right?
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I'm not sure you mean. It's a bipolar supply, so GND is GND.
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Sorry, I forgot it's a biploar supply.
What transformer do you recommend?
I thought the rule of thumb is to get something bigger than the desired output (30v x 1.5A = 45VA), so I need at least 50VA.
Do you have anything?
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