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wrote:
I have a speaker set, that says it needs 13.5V to run (13.5V DC IN, and
the big power brick thing says 13.5) - but my power brick is dead. I
just hooked up a 12V power source, and the LED came on. So at least I
know it's not my sub woofer (where all the speakers / volume control
plugs in).

Question is: can I run at 12v, just not as loud? Or will this blow
something up, cause a fire, etc...? Or will it just cause damage over
time? Or will it work FINE, with no major hazards, just not get as
loud?

Other numbers to consider:

ORIGINAL HARDWA
Input 120 VAC 60Hz 50W
Output 13.5VDC 2.5A

POSSIBLE REPLACEMENT
Input 120V AC 60Hz 23W
Output 12VDC 1000mA

If it works, just not as loud, I'm set... I really don't want to spend
more money on another powersupply.

Thanks!

Nu

It may well run on the 12 Volts OK, but I would be concerned that the
current (Amps or mA) rating of the 12V PS is less than half of the
original. This could lead to overheating of the PS, etc. Without knowing
what the speakers minimum Amp draw is, there is some risk.

BTW, 13.5 Volts DC is same as automotive DC voltage (nominally 12 Volt).
The set is probably also sold in an automotive version. What does a
replacement "brick" from speaker vendor cost ?? A 13.8VDC 3 Amp PS from
RS is $42US. Model 22-507 at http://www.radioshack.com