For one of my systems, I am currently running a 7.1 setup with the following pieces:
2) Polk RTI150 front (biwired)
1) Polk CSI40 center (biwired)
4) Polk FXI50 rears
1) Velodyne CHT15
1) Onkyo TXSR805
I am am wondering if it would be a good idea to add an amp to get more power to some, if not all the speakers? What kind of sound difference would I expect from adding an amp?
I am looking for suggestions and recommendations on what type and brands would be best for my setup. Should I just power the fronts and center or all my speakers? How big an amp should I get (I realize the RTI150 are power hungry)?
Also, I the manual I have at home shows the nominal impedance of the RTI150 is 4 ohms. However, the manula on the website shows 8 ohms. Can anyone confirm which is correct? Right now I have the reciever set with the 6 ohm setting (not sure why it's not listed as 8 and 4 in the menu like the manual/specs).