Author Topic: RMS and Ohms  (Read 1654 times)

Offline th3_f15t

  • I live here
  • *****
  • Posts: 1,060
RMS and Ohms
« on: 16 February 2014, 15:14 »
Basic question, as my mind isn't working today so can't quite remember my GCSE physics stuff!

Looking at a set of new front speakers for my 2007 Golf, looking at some JBL GTO-609C 16.5cm components. The specifications list them as 75w RMS @ 3 Ohms.

Now, my head unit pumps out 50w @ 4 Ohms per channel, so will connecting these up cause problems? If I'm right, lowing the resistance of a speaker (the Ohms) will result in a greater power draw from the amp (in this case, the built in amplifier from the head unit). I'm concerned I may fry the head unit if I had all 4 channels connected to a set of these speakers (2 front, 2 rear).

Or will the speakers just get a 4 Ohm connection and run on that power?

Many thanks for help.

Moving over to Flickr, sorry for the broken picture links!