That I don't know, but I have personaly not heard them so I can't arguethe worst sounding shallow mount subs i have heard was the earthquake.
Same perfomance as a P1i am a fosgate dealer. they are in the p3 series because the cast basket and it is a higher grade sub.
Now don't get me wrong I liek a lot of rockford's products. personally I think the p3 15"s are you're best products right now as far as moofers go, and you amps pwn, (T300-2) do 800 rms (rated @ 300)
