Quick impedence question

[lpmaster 10+ year member]

Will 4 ohm outputs only work with 4 ohm speakers.......or will 4 ohm output be ok for 2 ohm spekaers or even 6 ohm spekaers....help is greatly appreciated...i searched but didnt find exactly what i was looking for...THANKS, Chris

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[supa_c 5,000+ posts]

You can run a speaker at any ohm .

Its the amp that has to handle the ohm load.

 

[Slody4Futbol 10+ year member]

what are you using? an amp or head unit? most amps are 2 ohm stable... stereo mode... if it says 4 ohms... then use 4 ohm speakers or above

 

[lpmaster 10+ year member]

ok, so well ya my head unit is 4 ohm output and my amp is 4 ohm and its fine right now running my co-axial speakers...i just wanted to make sure i wouldnt have a problem running 6 ohm components with it......and apparentyl i wont...would there be any sound losses using 6ohm instead of 4 ohm with it?...clarity or distortion?...just gettin all the info i can, thanks alot those of you who replied...much appreciated

 

[supa_c 5,000+ posts]

There should be no problems.

Usually the higher ohm you go, the less power the amp puts out.

Whatever the amp does at 4ohm RMS expect to only get about 1/2 of that at 6ohms

 

[lpmaster 10+ year member]

alright so maybe a slight drop in max volume output from the speakers them self due to the increase in impedeance?

 

[supa_c 5,000+ posts]

yes

 

[RandyJ 10+ year member]

And I can tell you why really quick.

Power can be found using the formula P=IV. Where I=current and V=voltage

Both I and V can be substituted for another equation which contains R(resistance), but we will manipulate I since your voltage is usually pretty constant (around 13-14V)

Using ohms law, we can find out that I=V/R. Now you can see why an increase in resistance gives you less power. The end result is V^2/R.