Posted January 14, 201213 yr Lots of low-end output was the request, so a large ratio box tuned down to 42hz is what we came up with. The subs being used at DC Level 4 18's with Level 5 coils. Power on hand is 8-10k. Vehicle: Chevy TahoeSealed Volume: 4.75ft^3 per chamberPorted Volume: 25ft^3Port Area: 384in^2Tuning: 42hz
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