Thanks for the input. I hope I did okay purchasing the polk lsim system. Cost me $2200 for all 7 speakers after I sold the Yamaha Receiver

I know I could have done better for a set of towers on the used market but I wanted a fully matched system. My ears also disprove of aluminum tweeters.
You guys found the specs. Sorry for not posting them sooner:
https://d3vqw2nv1topde.cloudfront.net/assets/Product Documents/Product Information Sheets/LSiMSeries InfoSheet.pdf
2.83V Sensitivity: 88db
I figured adding amps would go better than buying an AVR with 100-125w 2 channel rating. That way during movies the Marantz can split the power to the center and 2 surrounds. I wish it had a pre-out for the center, then I could have the option to amp that as well.