what output am i getting from my amp?

Hi everyone I'm just trying to clarify what I think I already know? I have a vibe slick a4 amp and a vibe slick 12inch sub-400watts RMS, I have 2 of the channels powering components up the front and the other 2 channels in bridged mode powering the sub all at 4ohms, goin by the specs will the bridged channel be outputting up to 500watts? SPECS     SLICK A4 Type     4/3/2 Channel Class     AB Height     65mm Width     545mm Depth     245mm RMS @ 4 Ohm Stereo     4 x 150w RMS @ 2 Ohm Stereo     4 x 250w RMS @ 4 Ohm Mono     2 x 500w RMS @ 2 Ohm Mono     - RMS @ 1 Ohm Mono     - Max Power     2000w Frequency Response     20 Hz - 20Khz SNR     90 db THD     0.8% Bass Boost     0-24db HPF     50-1Khz LPF     30-300Hz Input mode     2 or 4 Channel Subsonic filter     - Remote control     Optional Line out     - Pase switch     - Low level input     0.2 - 6v High level input     0.4 - 12v Thanks.

Yes.

I posted another about setting the gain via a multi Meter approx 40v from my calculations, does it make a difference weather its 40hz 0db or say 40hz -10db?