[Nas Escobar]

Well, where's the link to the DB?

Max wattage doesn't really mean much though. That's just if the speaker needs a good amount of power to create bass. Unless your playlist consists of heavy bass music, the important number is the RMS, and you want the RMS to be at exact or a tad higher (about 50 watts or so) because that's your constant power. It's the same concept as buying non CEA-2006 rated amps, yeah they're rated for an insane amount of power, but you'll rarely get that. It's the same thing with your situation. The moments where you will get the max power is rare. You usually have to have the head on the extreme end of the high volume area. That's usually how I've blown subs... Alpine all the way to 35 playing rap music.

Anyways, when you bridge, it all depends on how you bridge them. Parallel drops the impendance down to 2 so you have to add both speakers' RMS to see how many watts the speaker will need and then see if the amp can handle it. IF you wire them in series, you'll get 8 ohms and you add the watts on the speakers to see your total watts needed BUT you have to divide the 4ohm rating of the amp in half since 8 ohms is more resistance. That's how you figure out how many watts the speaker gets (considering that most amps are already rated for 2 ohm, you don't need to do anything to find that value.)