Boy...did I get an ear full!!! Only joking folks! I must confess that most of what I read is very interesting but my exposure to technical knowledge is really not there! ( Business Major :)....any way...Sean answered this question by answering my reply to another thred elsewhere!! So Thanks again Sean and I will be on the look out for a Perreaux 3150 power amp (which has high current) needed to drive my sub woofer's (4 ohm load) Infinity's.