I need to know the voltage of the speaker for ac adapter matching

Jean, take the speaker with you to the source or electronics shop and they will match you up with proper universal adapter.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
power adapters

Amazon com Universal 5V 1 2A AC Power Supply Electronics

5V Power Adapter eBay

http://www.walmart.com/c/kp/universal-ac-dc-adapters

Complete Guide to Using the Correct Charger or Power ...

www.groovypost.com/.../choose-right-power-adapter-charger-phone-lap...

Jun 24, 2013 - If the device has a DC input of +12V / 5.4A, get an adapter that has a DC output of +12V / 5.4A. If you have a universal adapter, make sure it has the proper current rating ... Ideally, you'll have the same voltage, current and polarity on your ......or hdmi on my laptop .can you say what's the reason for the same.

How to select an AC to DC power adapter - ApogeeKits

www.apogeekits.com/power_adapter_selection.htm

An explanation of regulated versus un-regulated AC to DC voltage power adapters. ...voltage output power adapters and how to use this information to select the right one... Some (more expensive) DC voltage output power adapters have voltage ... Care should be take to ensure that the maximum input voltage of the load ...

AC/DC Power adapter ' Laptop Parts 101

www.laptopparts101.com > Laptop parts

Dec 26, 2008 - It's very important to use the right adapter for your laptop. ... Polarityon the new adapter's plug must be the same as on the original ... AC/DC power adapter voltage and amperage ..... I have purchased an non-hp dc-dc convertor (150W), 12Vinput, 19V output. .... So the cable component has to be replace.

Determining Proper A/C Polarity - Galen Carol Audio

www.gcaudio.com > Resources > How-To's

"DC to AC" cords are not really a common item. They are called "Inverters". Typical inverters are 12VDC to 120VAC and are found in mobile applications to operate houshold current type (120VAC) devices. Inverters cost many times more than thier "AC to DC" or "AC to AC" sisters.

An "AC to DC" and "AC to AC" cord however, is a very common item. They are usually called simply "AC Adapters" and are sold in many electronics stores (Best Buy, Fry's, etc.) and electronic specialty stores (Radio Shack) and electrnics suppliers (MCM, etc.) Nearly all of them are designed to reduce the voltage in your home (120 VAC volts alternating current) to a different but usually lower voltage that is either AC or DC.

In order to select the proper AC adapter, you need to know:
(1) Input Voltage - this is the outlet voltage - often 120 volts in N. America, (2) Output voltage - this is the voltage the device needs and is often indicated near the jack, The adapted must match this voltage. (3) the device voltage type - this will be either AC or DC. The adapter must match the type as they are NOT interchangeable. (4) the size and type plug on the cord that will allow it to mate properly with the jack. There are many, many types and it should be tested for fit prior to plugging in and must match the device jack (5) the power requirements - this is usually shown as a number in Watts (w) and / or Amps (a). It is very important that the apdapter power rating is equal to or greater than the amount specified by the device. Failure to meet the requirements above can cause failure of the device, adapter or both.

I hope this helps and good luck!

The Creative SBS 370 Works on 11.5V AC (IT IS NOT DC) 1600mA (Means 1.6 Ampere) and 18.4VA. So, the Power Adaptor which you connect to the power socket behind the woofer is an AC ADAPTOR and NOT A DC ACAPTOR.

the power supply from the state side has two ratings looks something like

input
120V ac

output
XV dc XXX mA

that out put line is what your looking for you can purchase a universal adapter locally as long as its able supply the Voltage out from the state side wall adapter.

Does your electricity fluctuates,that might cause.
.

If your AC adapter has a voltage regulator that might also cause the damage.if the voltage is too igh for your system it night cause the damage.

You can get a replacement and watch out for those things before connecting next time.

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.

This is an old type of PC speaker system. Can it be powered by batteries. How many batteries needed??
Multiply the number of batteries by 1.5 volts and you
get the voltage rating of your needed adapter. You can also take a look at the back of these GE speakers. Maybe you can find the voltage rating.
You may also consider buying a new set of PC speaker that can be plug direct to your power outlet.
You can buy it at a cost slightly higher than your
needed adapter.

speakers are damaged as well buy new units damage not repairable

NO, it is very under rated and powered. You need an 18 volt and not a 12 VOLT. They should not be that hard to find in an electronics store. Also the amp rating is also important. Make sure you are matching both amps and volts AC or DC to the the label on the woofer or you could end up blowing the out.