Power problem I recently lost the power adaptor that came with these speakers so I bought a new universal-type adaptor. Do I set it to - or + ?

Radio Shack

at most electrical stores you can buy a universal power adaptors with a selection of socents to fit most connections. and which has a selector on it for various voltages settings.
take one of the little connectors and see which one fits. then checking the polarity on your device set the polarity the same when plugging the connector into the power supply cable. adjust voltage as needed.

Warning: when connecting a variable power adaptor alway connect on the lowest voltage setting and work up as too high voltage can distroy your appliance.

Does your iMac have a headphone jack, this is an output source that can be used to input to other amplified sources. I'm not sure what type of connector that is on your Pro speakers but if it has a universal jack then plug this in the headphone jack on your computer.

we are not a parts provider, but Radio Shack makes universal power adapters that should work.

buy better speakers before you start a fire.
thrift store, cheap!

Your adapter is Part No. AVX300-A6859, Model No. 9701-00748-IUND.
Or You could get a universal that is rated for output of 18volt DC, 650ma, Center Positive.
I have used a 15volt DC, 900 ma with no problem, but I never run the volume high.

Good Luck

On the bottom of the Modem, it usually lists the type of voltage/current ratio, for example, My modem is a 12VDC in, output is .75A Through the modem. Each modem has its own power requirements. Therefore if they dont match, you have the chance of either underpower (which means no use) or overpowering (and killing your modem permanently)

Best suggestion si the same as above by cnavarro, Buy the Right power supply for it, dont just try anything. get the matching one. Otherwise it will be Incident A or Incident B. Neither would work well, and you would end up buying a new modem all together.

Get the speakers with you walk a distance for your Nearest electrical shop as quickly as possible and your roblems will be solved...

here is an free 800 number you can call and ask the techs to make positive friend

Polaroid electronics
1-866-400-5168



Hope that fixya up there

http://an-labs.com/multi/sw190.html 12vac