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Driving home from having a new battery put in the truck I'm listening to the radio like normal and suddenly my subs go full tilt, i turn down the gain and nothing happens so I turn down the head unit. Pull into the grocery story parking lot, turn the radio up and my gain knob isn't working, so I shut the truck off and then my subs just went ape shit. Like 38hz full tilt for about 6-7seconds and shut off, I ripped the remote wire and RCA's out. WTF is going on. This is the first issue with an AP amp yet. APSM1300.
To find sealed resonance
resolve Vas/28.32 =
result of that divided by Vb( box volume)
result of that +1
square root that result
result of that multiplied by FS
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