Impedance

[MikenTX]

I was given a new Yamaha amp and was looking at setting it up. Problem is I cant set it to the speakers I have. I use a set of KG4s for A&B mains, C1 center, and a set of Polks as rears. According to Yamaha I cant do this.

1) How important is getting the impedance set right?

2) Can the speaker impendance be changed?

[Michael Greenway]

What is the nominal impedance of your Polks? Are you running more than a pair of front speakers? If you have just one pair on front then there should not be a problem using the Yamaha.

[Steve Phillips]

I have an older MX-630 2 channel and asked Yamaha if it would handle a 2 ohm load.They said NO!.

Well it was used to drive my 2 4 ohm subs and had been doing that for 4 years with no problem.

I ran both subs on one channle (2ohm)and the center bi-wired 4 ohm on the other using A&B speaker outs.

did fine and never got hot even after two action movies.

I decided there were no benefits from doing this and stopped.

I wouldn't load anymore than 4 ohms one anyone channel.

2)I don't think so,not easily anyway or worth the effort.

Just my opinion

I'm guessing it's a 5 channel reciever,but need more info on the KG4s.I remember them being produced 6 and 8 ohm and maybe 4 ohm.What are yours?Yamaha I would assume is being careful.

Make sure it's well ventilated and it should do fine.Yamaha in the past has done well with lower than 8 ohm loads.

But don't take my word for it,better safe............

This message has been edited by Steve P on 03-03-2002 at 10:56 AM

[MikenTX]

Polks and Center are 8 ohms .... KG4s are 4 ohms. I have been running two sets of KG4s. One on A and one on B. My Yamaha does not offer this combination.