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<blockquote data-quote="Jeffdachef" data-source="post: 8260990" data-attributes="member: 650438">How loud your gonna get is based on the box. You bought a premade box cant hope to get that loud and low with such little port area. Your gains should not be at 0 normally its somewhere between 15-60% based on if your head unit preout voltage is true to specs. Learn to set gains with a digital multi-meter on a -6 db 50hz/40hz test tone.To set it by ear, max the high pass filter for the speakers, put on a 50 hz test tone, and put the volume to 80-85% of the head unit&#039;s max. Then go to the amp and slowly turn up the gain until you can hear the tone of the bass actually start changing(this is distortion point) then turn it back down a few notches.Also, if your electrical charging system is weak, you might need to do the big 3 upgrade. To see if its weak or not, turn on maximum AC, blast your sound system and use a digital multi meter to see how low your voltage drops. If your seeing 13V or under then you need to do the big 3 upgrade.(google it up)If you have dirty bass boosted songs in your playlist, they will blow subs easily too.</blockquote>

[QUOTE="Jeffdachef, post: 8260990, member: 650438"] How loud your gonna get is based on the box. You bought a premade box cant hope to get that loud and low with such little port area. Your gains should not be at 0 normally its somewhere between 15-60% based on if your head unit preout voltage is true to specs. Learn to set gains with a digital multi-meter on a -6 db 50hz/40hz test tone. To set it by ear, max the high pass filter for the speakers, put on a 50 hz test tone, and put the volume to 80-85% of the head unit's max. Then go to the amp and slowly turn up the gain until you can hear the tone of the bass actually start changing(this is distortion point) then turn it back down a few notches. Also, if your electrical charging system is weak, you might need to do the big 3 upgrade. To see if its weak or not, turn on maximum AC, blast your sound system and use a digital multi meter to see how low your voltage drops. If your seeing 13V or under then you need to do the big 3 upgrade.(google it up) If you have dirty bass boosted songs in your playlist, they will blow subs easily too. [/QUOTE]

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