I have two old Nuforce Ref9 amps. One with a blown power supply. They are old Skynet power supplies that are single rail (I'm not even entirely sure what that means), dual-voltage 48V and 5V aux. I have been searching for a replacement and have found many things that are very close but nothing that seems to be exact.
First, I found a brand that looks well-made named Cosel but I have not found any use in audio. They look more industrial. I would also need a small step-down device for the 5V circuit. Is there any reason to think that this would not be suitable for audio?
And I am assuming I would add one of these to make the circuit work.
There is also this Chinese option but it is 46V not 48V. Is this too big a deviation for reliable operation?
Then, I am completely unclear on how closely matched the auxiliary voltage needs to be. I am not even entirely sure what it does. Does it provide current for a soft start? The power light LED is wired to it, that is for sure.
And last, after it's all replaced, should the fuse be paired to the power supply or the original spec.
I am feeling entirely out of my league on the specs, I just want these things to work. My overall technical prowess is about as good as swapping the power supplies between the two units to determine it is the power supply that is bad, not the amp board.
Thank you in advance.
First, I found a brand that looks well-made named Cosel but I have not found any use in audio. They look more industrial. I would also need a small step-down device for the 5V circuit. Is there any reason to think that this would not be suitable for audio?
And I am assuming I would add one of these to make the circuit work.
There is also this Chinese option but it is 46V not 48V. Is this too big a deviation for reliable operation?
Then, I am completely unclear on how closely matched the auxiliary voltage needs to be. I am not even entirely sure what it does. Does it provide current for a soft start? The power light LED is wired to it, that is for sure.
And last, after it's all replaced, should the fuse be paired to the power supply or the original spec.
I am feeling entirely out of my league on the specs, I just want these things to work. My overall technical prowess is about as good as swapping the power supplies between the two units to determine it is the power supply that is bad, not the amp board.
Thank you in advance.
That is not reassuring...
It depends mostly on there overload capacity and the type of regulation.
Impossible for us to answer with the info at hand.
You always fuse for the least speced load downstream, in this case, it might be the power supply! You never want an underspeced components downstream of too big of a fuse.
I am sorry to say it seems like you are. As you'll be handling mains wiring, you need to be a bit careful. It is entirely possible, but you need at least a modicum of know-how to proceed safely. In this situation, I would side with rayma's advice.
Best case, sell these on ebay as-is for parts or repair, and use the money to buy a new amplifier
of the same (now Chinese) brand, or different brand (huge number of choices available), which
will come with a factory warranty. I would go for the latter.
of the same (now Chinese) brand, or different brand (huge number of choices available), which
will come with a factory warranty. I would go for the latter.
Get a 48V Meanwell supply and a smaller one for the 5V.
Done ;-)
Edit: €60. Mean Well UHP-350-48
And € 5. Mean Well IRM-03-5
Jan
Done ;-)
Edit: €60. Mean Well UHP-350-48
And € 5. Mean Well IRM-03-5
Jan
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I just ordered two. I mean, they already don't work, worst case scenario I blow them up and they stay broken, right? It's really just mounting/connecting spade terminals together and drilling a few holes in aluminum.