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<blockquote data-quote="zGhost" data-source="post: 5422738" data-attributes="member: 605292"><p>Seems to me a single 12&quot; getting 400 watts RMS should hit quite hard in a truck cab. I go back the the wiring. Is it wired exactly as pictured. I mean did you jump both the positive and negative coils then run the positive from 1 coil and the negative from the other coil to the amp? If the coils aren&#039;t jumped, it is incorrectly wired. Another way is to just run 2 sets of wires off the positive and negative of each coil to the positives and negative on the amp. You could term both sets to the boxes connector plate and run 1 set to the amp. That CRV is a 1 cubic foot box should in fact sound a bit boomy (or have a accented output probably around 60/80 Hz as that box is on the lower limit size wise for that woofer. What ever you do don&#039;t try and port this 1 cub foot box //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif I think the CRV&#039;s start out at around 2.5 cubic feet for ported designs. Turn all your head units controls to flat (make sure the loudness is off to) turn both the amps gain to min and start over with the gain on the amp. After you get this set so theirs NO distortion at a &quot;reasonable volume&quot;, feel free to tweak up the amp bass circuit gain until you like the sound (I have never gone more than 6db myself). Then turn her up and finish the main gain until you here distortion. Of course 1st make sure you got the sub wired correctly for some reason I think its not. That sub should kick pretty hard in a truck cab with that power, though your not gonna set SPL records with it.</p></blockquote><p></p>

[QUOTE="zGhost, post: 5422738, member: 605292"] Seems to me a single 12" getting 400 watts RMS should hit quite hard in a truck cab. I go back the the wiring. Is it wired exactly as pictured. I mean did you jump both the positive and negative coils then run the positive from 1 coil and the negative from the other coil to the amp? If the coils aren't jumped, it is incorrectly wired. Another way is to just run 2 sets of wires off the positive and negative of each coil to the positives and negative on the amp. You could term both sets to the boxes connector plate and run 1 set to the amp. That CRV is a 1 cubic foot box should in fact sound a bit boomy (or have a accented output probably around 60/80 Hz as that box is on the lower limit size wise for that woofer. What ever you do don't try and port this 1 cub foot box [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] I think the CRV's start out at around 2.5 cubic feet for ported designs. Turn all your head units controls to flat (make sure the loudness is off to) turn both the amps gain to min and start over with the gain on the amp. After you get this set so theirs NO distortion at a "reasonable volume", feel free to tweak up the amp bass circuit gain until you like the sound (I have never gone more than 6db myself). Then turn her up and finish the main gain until you here distortion. Of course 1st make sure you got the sub wired correctly for some reason I think its not. That sub should kick pretty hard in a truck cab with that power, though your not gonna set SPL records with it. [/QUOTE]

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