Audio Systems: 15V 4A AC Adaptor instead of 12V 4.2A, voltage regulators, exact specs

Question
Dear Sir,

My previous power supply (12V 4.2A) that I used for creative 2.1 speakers has fried. Tried to find a compatible replacement for it in major stores including creative labs store. However couldn't find the exact specs and creative labs service recommended me a 15V 4A AC Adaptor and I ordered it. But I havenot tried it yet and I'm kind of concerned about the difference. Do you think it is OK to use a 15V 4A AC Adaptor instead of a 12V 4.2A one.

Thanks very much,

Regards,

Murat

Answer
yes, there won't be a problem. inside your equipment is voltage regulators that drop it down to 9 volts anyway. just don't go any higher than 15 volts to the input. if for some internal reason it still doesn't work,(which i suspect since you said 'fried') you might check the +9 and -9 regulators, they look like large 3 legged transistors and will be near where the power comes in. i'd open unit up and get my nose close to it to check for a burnt smell. i could go on and on about what to check, but try it and get back to me if there's a problem.