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2 18" Sub box?

tv559
in Subwoofers / Speakers

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Posted

I am about to install 2 18's in the back of a Gmc Sierra Ext. Cab. I will be taking the back seat out. My question is should I have the subs and port facing up or Subs facing forward and port up. I was told to have the subs facing forward and port up but I would like more opinions on this.

Thanks,

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    Two 18's in the extended cab? With port? I'd say you're looking at almost wall size. Face both forward.

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