More Power?

[Pinktulip7]

My Sub Aiwa 75 w connnected with HK AVR 7300 through preout
but I am not getting enough bass or deep sound?

[Mjr7531]

Then buy another sub.
That or try tweaking placement, but looking at your choice of fronts, pick the former,
Matt

[RuSsMaN]

..and Bingo was his name-o.

[Dr. Spec]

Hell, for that matter, set the fronts to large and the sub to off/no. That Aiwa won't hold a candle to the 12's.