Subwoofer and Converter

You need explain much more before any substantive assistance can be given

Why do you need to connect your home sub-woofer to your car in the first place? I believe the ohm rating for car audio is different than that of say, a home theatre system.

my opinion: If you want to put a Sub-woofer in your car (I don't recommend this in the first place) go buy a 12V audio amplifier (you can get them for cheap nowadays) and a properly matched (Wattage/Ohms) speaker to plug into it.

I'd guess that if your trying to save a quick buck by tossing a powered 110V speaker into your trunk, you might try comparing the cost of a suitable (5A+) 12V to 110V power converter to power it VS. the cost of an inexpensive 12V amp/speaker setup.

if your going to do it, do it right the first time.

Your Speaker says it needs 100-110V 2.5 A. That is 250 W. If you want to feed it with 12V, you need at least 250 / 12 = 21 A !
So, an invertor that can handle at least 250 Watts, and a carsystem that can give those 21 Amps extra is what you need.

No matter what conversion you do, the power (Watts) ALWAYS stay the same !!!
(actually you gonna need a little more because you'll loose power IN the convertor)

oh man, i sure made myself look stupid on that one. I completly fell on my face with the 5A statement. I guess every once in a while it's ok to throw out the knowledge of simple electrical math and replace it with.... a sleepy void of intelect.

My apologies...

Wow! A very clear and concise self depreciating statement

Can I use that?

Simple! Buy a subwoofer for cars!

azzu12399,

Please help us help you, simply stated what is the pertinent info? Make, Model series etc..

You need to supply the ACTUAL output power of your amplifier, from what I can make out you have given the input supply voltage (100/120V ac) and the current rating of the input supply fuse (2.5A). I seems to be a powered home subwoofer (with a built-in amplifier), so I am going to assume it's output power range is somewhere in the order of 50-200W RMS.

As for the converter, you need a 12V to 230V DC inverter. You are better off buying a car audio amplifier as they are inexpensive, and will likely be cheaper than the inverter needed for your powered home subwoofer (with its built-in amplifier). With a little simple rewiring of the subwoofer speaker you can power it from an inexpensive car audio amplifier.

12V to 230V DC inverter

Why when the subwoofer is 100/120V vac?

Oops, that's a typo that slipped thru. The inverter obviously must be 12VDC to 110VAC for equipment designed for a 100-110V ac supply.

You can check the output voltage of your Subwoofer power supply system, If it is 12VDC, you're lucky because you can modify your subwoofer. If you don't know how to do it, look for a technician that can handle the job.

thankz for lot's of answer.