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<blockquote data-quote="Buck" data-source="post: 8768271" data-attributes="member: 591582">It seems to me that if everything is 100% hooked up correctly, then this is a head unit RCA voltage issue and possibly somewhat of a box layout/location issue.&nbsp; I tend to lean on this being mostly a signal voltage issue. I&#039;m not being sarcastic and be careful if you do this, but have you tried playing with the gains just by listening to what the sub is doing?&nbsp; And I&#039;d definitely check the sub and make sure the wires haven&#039;t been pulled out on one coil or anything like that, and I&#039;d also check the sub coils themselves and make sure they&#039;re reading the ohm they should be.&nbsp; There&#039;s only so many things before you figure this out.&nbsp; If you have a headphone aux jack to RCA splitter, you could play sine waves from your phone and see if maybe your RCA&#039;s themselves are damaged.&nbsp; Sometimes RCA&#039;s break inside, and that can cause a low-volume issue.&nbsp; The idea with that is to skip your radio and RCA&#039;s in the vehicle and plug up another signal source to see if the amp moves the sub any differently.&nbsp; If it plays differently, then you&#039;ll know there&#039;s an issue with that related equipment.</blockquote>

[QUOTE="Buck, post: 8768271, member: 591582"] It seems to me that if everything is 100% hooked up correctly, then this is a head unit RCA voltage issue and possibly somewhat of a box layout/location issue. I tend to lean on this being mostly a signal voltage issue. I'm not being sarcastic and be careful if you do this, but have you tried playing with the gains just by listening to what the sub is doing? And I'd definitely check the sub and make sure the wires haven't been pulled out on one coil or anything like that, and I'd also check the sub coils themselves and make sure they're reading the ohm they should be. There's only so many things before you figure this out. If you have a headphone aux jack to RCA splitter, you could play sine waves from your phone and see if maybe your RCA's themselves are damaged. Sometimes RCA's break inside, and that can cause a low-volume issue. The idea with that is to skip your radio and RCA's in the vehicle and plug up another signal source to see if the amp moves the sub any differently. If it plays differently, then you'll know there's an issue with that related equipment. [/QUOTE]

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