Recently I just had 2 12” SA12 put in, running them in a dual ported box, they are paired with a pioneer amp GM-D9701 And JVC KW-V headunit. Basically my issue is for 2 12” sundowns, they are not hitting nearly as hard as they should, it also seems that some days they hit harder than other days, it’s a slight but noticeable difference in sound. I’m running them off of a 660cca battery, big 3 upgrade and a stock 100-120 amp alternator, running 4 guag wire, I’m not getting any lights dimming but rpms sometimes go real low on certain bass notes. My issue is, it sounds like the power of one sub playing but both are playing with no issues to either of them. I havnt played with the gain or any filters but it seems like the x-over is somehow changing by its self? Maybe bad rca cables? I’m lost as too what I should do !!
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