Axiom Home Page Forums General Discussion Technical Questions 6ohms or 8ohms?

Hi everyone, I am glad to be a newcomer in the great Axiom family. I've just purchased a set of speakers 1 months ago(M22, VP150 and QS8) and by the way there are amazing speakers :-)

now I've decided to get myself a new receiver worthy of my speakers. so I finally pulled the plug on a Yamaha RX-V2500(I got a great deal from Mark at AudioShop by the way).

now here is my problem:

the Receiver give me the option to be set in 6 or 8 ohms mode.

but my speakers are a mix of both :
M22 are 8ohms
VP150 and QS8 are 6ohms(8ohms compatible)

so my logic choice was to put the receiver in 8ohms, but now I wonder if it is really the best choice? anyone got any input on this matter?

thanks!

Leave the receiver in the 8 ohm position... unless you have problems with the receiver shutting down (really that should only be a problem if you run A & B speaker sets together)

Bren R.

"8 is Enough"

Oh, and for reasoning... usually the manufacturer will drop voltage to the power rails in the lower impedance position... like making sure you don't overheat your car by intentionally shutting down half the cylinders.

Bren R.

I have the RX-V2600 which is a newer model for RX-V2500. You should set the reciever for 6 ohm. This is the basic rule i read somewhere. The tech support from Yamaha will tell the same thing i said.

Enjoy!

Han

thanks for all your input!

while waiting for an answer, I've search a bit on AVSforum and it seem in fact like the general opinion seem to favor the 8 ohms setting stating that in fact a 6 ohms(or 4 ohms on some receiver) setting might reduce the power output.

As Bren and Randy already suggested use it in the 8 ohm mode. Here is an article from Audioholics that pertains to these switches.

Han, the tech support guy can't say "oh, yeah, the switch is pretty much just a dummy thing that Underwriter's Labs makes us put on it" because on the off-off-off chance you damage a transistor, then they'd be liable.

Bren R.

Hi, Rick:

I talked to tech support in Axiom and Yamaha. They both suggest me set it to 6 ohm for my HT: M60tis, VP150. I will switch back to 8 ohm after i read the link.

Thanks,

Han

Odd, do you remember who you talked to at Axiom?

Bren R.