hmm.. well i looks like a set 2 10" kickers in a devided box being braced by the amp mounting spot and maybe somewhere else.. it looks like it might be ported but with the size of the boxes i dont see why it would need to be..
I have 3 questions for you sleeperanger.
1 What size of amp are you running? (Watts RMS!! not peak please)
2 what gauge of wire are you powering it with?
3 why do you think you need a cap?
i would have your battery and altenator checked if all your lights are dimming with only 400 watts. i just installed 2 kicker l7s with 1500 watts that barley dimmed the headlights. if your truck is manual everything try switching to a bigger alternator as they dont put out as much.
i have a 400 watt amp and im not having any dimming issues. even with the negative wire to the battery badly corroded. sounds like you alternator cant charge your battery. or the battery cant store all the power. check all the connections.
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