OK, all you 'lectric gurus out there, I need a sanity check. Mainly because I'm finding it difficult to believe that it could really be this easy.
I have a piece of gear. Well, it's a powered speaker. It's not even mine, it's the GF's. They are computer speakers from a company I never heard of. Nice little jobbies, sound pretty good. She got them when she was living in England. They look like those itty bitty Altec Lansing line arrays with the 1 inch aluminum drivers?
Anyway, the thing has this AC adapter. It's a brick, like a laptop adapter but bigger. It's switchable because, well, obviously it's from the U.K. so the power feed is different. But since, it's an AC to DC transformer, all that matters is the output.
Well, her cats chewed through the power cable and it's gnarled pretty bad. They chewed through the end and since it's captured, I'd have to take the whole thing apart to replace the power cord. That's a problem because the guts are encased in epoxy except for the power transformer. The company that made this adapter still exists but this thing went out of production 10 years ago. They have printed boards left, that's it. They offered to mail me a board and a parts list if I wanted to assemble it. I don't, really, but if I have to, I will.
So I had a brain fart and thought "Why not a universal, switching adapter? All that matters is the output, not the input." I thought nah, who's gonna have an 18.5V adapter running at 1-2 amps? Nothing runs at 1-2 amps anymore. Not at 18v at least!
Then I found this guy: http://www.sunvalleytek.com/universa...ut-p-1088.html
The output is apparently progressive as well as switchable. It also has a voltage setting of 18.5V at 5A max. If that's the case, this speaker thingy runs at around 1-2 amps. Now, my brain is telling me that if this puts out 5A max at 18.5V, this should power these speakers without blowing up the little amp. The number that matters for that is 18.5V and that's one of the options.
However, my inner skeptic is telling me I'm an idiot, no way it's that easy and that I'm gonna blow up my GF's stuff. Normally, I wouldn't care, I'd try it anyway and what comes is what comes. Since this isn't mine, she is attached to them because it was a Christmas gift from her grandma and replacement is difficult, I don't want to ruin it on her.
So could somebody please give me a second opinion on whether this will work or not so I can stop worrying about and just fix the damn speakers. Hopefully I can get it done before Christmas.
Summary of issue:
- Speakers from U.K. need 18.5VDC at ~1.5A input
- Power supply in link puts out 18.5VDC at 5A maximum
- Will the maximum amperage of 5A be an issue for the speakers only requiring ~1.5A