Or will the built in crossover capabilities of the amp be sufficient?


Here is what I'm running..


HU=Sony DSXS300BTX


Polk Audio Pa1100.5 5-channel/1200 watt

Amp Info...

Crossovers: The amplifier features built-in 12 db/octave crossovers which can be set to High-pass, Low-pass or Flat for the Front and Rear channels. The mono-subwoofer channel is always set to Low-pass. The High-pass filter attenuates low frequencies and is used with mid-range speakers and tweeters. The Flat setting does not attenuate any frequencies and is for full range speaker systems. The Low-pass filter attenuates high frequencies and is used for subwoofers.

Crossover Frequency: The front and rear crossovers can be individually set between 50 to 500 Hz, while the mono-subwoofer Low-pass crossover can be set between 30-250Hz to fine tune your car audio system

(variable high- and low-pass filters (50-500 Hz, 12 dB/octave) on 4-channel section)


Polk Audio DB651s

Infinity Kappa 10.9 tweets

Alpine Type-S SWS-1043D Dual 4 ohm