The amp you need will obviously depend on the efficiecy of your sub. I plan on purchasing a Snell Type 1800 sub, a ported but nevertheless inefficient sub. I plan on purchasing an Ashly pro amp in the 1000W bridged area with MOSFET output devices; MOSFETs ae very good into the low frequencies. Also, you need to check out the power-handling of your particular sub; some units really crap out on power-handling at the very lowest frequencies. My motto, however, is this: excessive power is barely adequate.
