Dyccod Posted March 14, 2020 Report Posted March 14, 2020 I have an (1) Hcca 15.2 black cone. And a sound stream ta1.3000d amp. That I want to build a ported box for. I want it to take as much space as possible in the back of my extended cab GMC Sierra. (Seat has been removed) width available 52” roughly from side to side. I’ve built one out of boredom. it doesn’t sound bad but is not maximizing the sound I believe. Any ideas or rebuilding ideas. Would like dual ports on each side standing up with sub up and centered..
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