Powered mixer specs say:

XXXXX watts @ 2 ohms
XXXX watts @ 4 ohms
XXX watts @ 8 ohms

The more ohms the speakers are, the less watts the mixer puts out. My Peavey TLS5 speakers are 8 ohms.

Peavey says anywhere between 150 to 300 watts are required for my speakers. The only powered mixer that reaches the 300 watt top end in stereo is the Mackie 808s. It is 600 watts per side 2 ohms and 300 watts per side at 8 ohms.

Anyone here understand all of this @#$@#$!$#@#@?

Anyone knows of any 2 ohms speakers?

It's a simple application of Ohm's law. Watts = (Voltage x Voltage)/Resistance. So an amplifier with 40V rms output will deliver 200 watts into 8 ohms, 400 watts into 4 ohms and 800 watts into 2 ohms, all things being equal (which they usually aren't). Generally speaking, you won't find 2 ohm speakers. This rating is meant for two 4 ohm speakers in parallel.

Bryan

An ohm is a unit of measure of the resistance of an electric circuit.
A watt is a unit of electric power.

So if you are in your swimming pool and you try to kick your girlfriend in the butt and knock her down it will take a lot more power in your leg to do it than if you done the same thing on the deck of the pool. Therefore it takes a lot more power under water to get the same reaction than it does in air because there is more resistance. So it is with your speakers. A speaker of 8 ohms has much more resistance than a speaker of 4 ohms. Therefor it takes more power to get the same noise out of a speaker of less resistance. There are formulas that will give you precise answers of watts, ohms and all that if you are really interested. Just keep in mind, if your going to punch a guy in the nose, better check your watts of power in your biceps against his ohms of resistance to your watts of power.

Taken from the wisdom of Grandpa Doug. I know Uncle Dave could do a better job of explaining, but after all, I’m getting old and he aint married to Ruthie.

How about the yogi with the 2 ohm mantra of resistance: ohm - ohm

Scott

Good one Scott

I hope I can remember my physics well enough:

Watts = Voltage x Current or
= Current x Resistance(or Impedance) x Current

Buy powered speakers--it's all done for you.
You'll get amps that are tailor-made for the speakers.
DonM

yes Don.....and less to carry....

You did a fine job of explaining it Doug ! As for being married....oogh(shudder)... That word is only a few pages away from the "K" word in my book of freights !
Too soon to even joke about that stuff!

and Don ....... The Mackie advertises a 450 watt powerhouse in their cabinet, when actually, it only produces full power at 4 OHMs ! The cabinet is loaded with 8 ohm speakers ! It's not quite a lie, but it ain't no 450 watts either. Now we have to read lables for carb content as well as speaker inpedance !

Yes UD, but are those 8 ohm speakers in parallel? If so then you'll get the 450 watts (assuming they're truthful). And I must be doing something wrong. Still happily married after 33 years and looking forward to another 33.

Bryan

P.S. Book of freights?? Do you drive a truck in your spare time?