mandos

I was about to post that you CAN do it, but 1/2 power goes to resistor, 1/2 to the speaker...200W is possible, but you'd need a big ___ 4 ohm resistor(we have them here for benching amps, they're about the size of 1/2 a normal brick)

But since it was so old, I didn't post that.

Notacop

sorry chris. you are wrong.


All of you are wrong. I am right!!!!



The item you are thinking of is not a simple resistor, but an impedance matching transformer: http://www.bcae1.com/trnimpmt.htm

I forget the specific model name, it was made by stinger iirc, and was called something along the lines of an accuvolt.


They are not selectable, but you buy the one that will give you the load you want. Say you have a 4 ohm speaker, it will let you get 2 ohm, and the full power goes to the sub.


However last I saw a single one went for 75-100, for a pair, you might as well have just bought a different amp.

SCI_TC_GUY

^^^ wha??? crazy...

mfenske

What he's looking for is a transformer that reduces the impedence by a ratio of 2:1. These gained some popularity in the late 90's. IIRC Stinger and Veritas made them and called the product Accumatch. This device would effectively lower your impedence to 2 ohms but would come at the expense of some parasitic loss, meaning while your amp would make the 2 ohm power some of that would be lost to the transformer. Mark

Jhhnn

Impedance matching transformers are used in PA systems all the time... but they're usually not designed for the kind of power handling you're talking about, but rather much, much lower... they're used to keep the total impedance up in systems with massively parallel speaker systems...

Nor will their use do what you want, increase the power to the speakers. They'll actually decrease available power because of electrical inefficiency.

You probably need a separate mono amp to drive the subwoofers to do what you want...

mandos

Wow...I learned something.

That's pretty nifty, if not a little silly....at least for car audio purposes.

Supertech

I think you will find the following link to be of value in your quest.

http://www.bcae1.com/trnimpmt.htm

It includes a calulator to determine your specific setup.

popalock85

www.playerchain.com

chadfo

Please explain how this has any relevance in this thread? This is not the "who is the best threadjacker post?"

mandos

Well, technically he's jacking his own thread....but I agree, doesn't really make sense.

Notacop

I beat you to that link.... check a couple posts above you