Need help - buying new rear speakers for use with rear wireless receiver

[smail.nathan]

Hi all... I have a yamaha Yamaha RX-V663BL receiver, paired with a polk center speaker and two polk fronts (polk rm202 is the center, polk rm201's are the fronts). I currently have two bose (181's, I think?) as my two rears.

Needless to say, I hate the sound of the bose. Hate it. Love the rest of my system. In my apartment, the wife insists that the two rear's are hooked wirelessly - no compromise there. So please no suggestions telling me to drop the wireless - it's not an option.

The wireless quality is good - I have a LG ACC97WK rear wireless receiver - much better than the old Rocketfish I used to have - no drops or buzzing here.

Anyway, I want to upgrade the bose to two polk rears - I can get my hands on two matching polk rm201's to complement my front for pretty cheap -about 150 for both alltogether. I want to do this very badly, but I have one fear - the polks are rated at 8 ohms. The two bose I currently have are 4 ohms. The lg rear wireless says it's designed to use with speakers that are 4 ohms.

I don't know that much about this kind of stuff - would hooking up 8 ohm speakers to the rear wireless receiver damage the speakers or the rear wireless receiver? In other words, should I not do this? And if not, what speakers would you recommend for the rear? Everyhting I find that seems decent speaker-wise seems to always be 6 or 8 ohms. Like to keep the sound timber-matched, which would mean sticking with the polks.

Any ideas? Hope that I can just get the polks, but I don't want to do that if it would damage the new speeakers I would get or the rear wireless receiver.

The LG unit is pretty rare now a days, so I don't want to have to try and find a replacement. Thanks for all your help!