I have a Pioneer VSX-D510 AV receiver. It's rated at 80w+80w at 8 ohms (front). So, I have just purchased Jamo E 470 front. The spec states these speakers are 4 ohms. But! The speaker connections on the back of receiver indicate that you can use speakers with 8-16 ohms impedence. Do they match together? Is VSX-D510 "strong" enough? Many thanks for any help!