I'm looking to change my speakers, but am short on funds. Until I can get a really great audiophile system, I was thinking of going with Wharfedale Diamond 8.1's, which can be purchased very inexpensively. The only problem I see is that the Diamonds are at a nominal 6ohms impedance, and have an 86 db sensitivity rating. Do any experts out there know if this will be a problem with the Denon AVR-3805? Thanks in advance.