what??? 10-35hz? Have u even heard 10hz, LITERALLY? The only time i've ever heard that low is in nice headphones.. never on subs even in home theater... Besides movies, there is no music that low and if u name something, it's either custom made or bass-related... Anyways.. if u are set for 10-35hz.. u will need an amp no powerful than ~800w TOTAL for both subs... The enclosure will need to be HUMUNGOUS to effectively get down that low and the lower power output is required because the subs will want to move very very easily.