Hello all !!! I'm thinking to buy a Marantz SR5300 A/V receiver (6-16 ohm impedance recommended) and the following speakers... - Front MORDAUNT-SHORT 902 (8 ohm) - Center MORDAUNT-SHORT 905c (8 ohm) - Rear MORDAUNT-SHORT 903s (4 ohm) As you see, Marantz recommends speakers with 6-16ohm of impedance, and the MS 903s is a 4ohm speaker... Is this a problem ??? Can this "variety" of impedance damage the speaker and/or the AV receiver ??? Would be better substitute the 903s with the 902 and buy a pair of 904 for the front channels ??? Thanks in advance for your help !!!