I guess you can call me a newb about subwoofers and amps and HU's, but i have a quick question....I got 2 12" alpine type r 1223d pushing 600rms with a mono alpine pdx1.600...as for the HU it is a alpine cda 9857...speakers are stock but im buying either type r or type x...

with this HU will it be enough to power all 4 type r or type x speakers? or would i need another amp?

Inside the HU when you go into the bass engine...what does the Q and Fre stand for? I know its tuning the sound but would you guys recommend i set it as for maximum SQL?

Thanks I really appreciate it.

 

it would be ok for the ones with the lower power handling.

 

the type r or x def need an amp to shine.