Any power-amp needed for car audio setup?

SanchezMaster

New member
I recently purchased 2 x 800W Kenwood subs to fit in my car.
Have a Peak Power of 800W
And a Rated Power of 200W

My head unit is the Kenwood KDC-U346 and has Maximum Output Power of 50W x 4

How am I to power the subs, and how big a poweramp is required?
Also, do I need a crossover or a low band pass to send low frequencies to the sub?

Sorry, i'm a bit of a rookie.
Cheers :)
 
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