Does the impedance have to match?


I have a cheap all in one receiver/dvd. I want to upgrade the speakers that came with it. All the speakers that came with it are 3 ohms including the passive sub.
My question is do I have to change all the speakers to have the same impedance including the sub. Or could I just change the front and center speakers. It is connected to the tv in the livingroom. I only use it for watching football and movies. I have a 2ch set up in another room for music. My girlfriend likes the way it looks in the living room, so the receiver has to stay. I just want it to sound a little better without blowing it up.
tommy583
No you don't have to match impedance. In fact you're better off getting higher impedance spkrs -- & most after market spkrs are higher impedance anyway. Go for very "sensitive" spkrs i.e. their "dB/1w" rating should be 90 or more.
Agreed. But, if this is a home theater receiver, put your money in the center channel. That is where all the info is coming from to begin with. The fronts barely do anything in HT setups (for the most part). I would think that this would have the biggest impact in what you are trying to achieve...especially with movies.
Yes it is a surround reciever. So you guys are saying that I could run say 8 ohm speakers for the fronts and center. Then it would be ok to leave the rears and sub with the 3 ohm speakers that came with it? I was under the impression that I would have to change them to 8 ohm speakers also. Thanks for your input.