Can I use a 4 ohm subwoofer with a 6 ohm AVR?

[Valkeneer]

I recently bought the Sony STR-AN1000 that says to use speakers with a nominal impedance of 6 ohms to 16 ohms. I also have two very old Klipsch KSW-150 powered Subwoofers that appear to rated at 4 ohms.

Can I use both my 4 ohm subwoofers with my new AVR? Are there any cautions or issues to be aware of?

 

[Trell]

The powered subwoofers have their own internal amplifier and is not what the manual of the receiver refers to.

 

[Valkeneer]

So can I safely connect them? I don't see any other references to the impedance of the speaker itself.

 

[Trell]

Yes, that should be the case whether you use speaker or line level input on the subwoofers.

 

[j_garcia]

The AVR does not "see" the impedance of the subs since they are not powered by it.