Amp Jargon

"Power amplifier, 19"/2U, 2 x 600W/4 Ohm, 2 x370W/8 Ohm, 2 x 700W/2 Ohm"

Always been wondering...

When a spec says an amp delivers 2 x 600W / 4 Ohms


Say you have two speakers, Do they mean :

a) that the combined impedance should equal 4Ohms

or

b) that each speaker has an impedance of 4Ohms???

I would think combined R for each output channel is 4 ohms. so each speaker is 4ohms, but I dont know for sure

Don't you mean, so each speaker is 8Ohms???

i.e.

1/R = 1/8 + 1/8 = 1/4

=> R = 4Ohms?

I presume that was a typo!

so, does anyone know what the specs mean for sure??

it depends how you are wiring, if you have 2 outputs at 4 ohms but you have 8 ohm speakers you would need 2X 8 ohm speakers on each side wired in in paralell which would be seen by the amp as 4 ohms per channel,

they do mean 2x 600 w into 4 ohms on each channel,

Its long to explain but i will try give it a go,


so if you have 2 X 4 ohms speakers on the amp thats gonna give you a 600w output per channel 4 ohms on each channel( also you want to find out if thats rms or some silly peak output rating too which if there using clever marketing could mean you only have 150w rms per channel)

The 2 X 8 ohms is meaning 370w @ 8 ohms per channel,

the ohm resistance means 4 ohms will be more effcient as more of the voltage gets converted to movement of the speaker,

Really i would need to know what your hanging off the amp, what are the speakers you are looking at rated at ?

See, I'm just trying to find an suitable amp for some that will drive two 4Ohm bins... so the amp needs to drive a 2 Ohm combined load... the bins are 300W each.

Any ideas for a relatively cheap amp that would do the job??

somthing like this could do the trick ,

http://www.dv247.com/invt/12971

i will let you know once i have found some more options

Cheers Dsp, that's grand... just needed to be sure of how those specs were to be interpreted!

Nice wan