i picked out 6 Polk Audio RC65i 2-Way In-Wall Speakers for the eaves of my outdoor patio, i have a thread going in these forums concerning the speakers. the speakers will be spread out evenly over a 24 by 28 foot area.they are 8 ohm speakers. i need a receiver to drive these 3 sets of speakers.we dont need surround sound ,strictly a receiver amp that will play our music. i havent been able to find a receiver that has an A B and C speaker output. is there one. will i need to buy a speaker selector switch and wire it to the A speaker output. if i need to get a seperate amp i am open to that. do i need to worry about impedence matching for the 8 ohm speakers. i have been out of the audio hobby for a long time so any advice is great. i am leaning toward a powered subwoofer as well.cost isnt really an issue but i dont want to be in the thousands of dollars