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  1. downfire subwoofer reverb kick back

    Technical & Advanced Car Audio Discussion
    having a custom down firing box built for 2 SI BM MKV subs in my 2015 screw f150. i have asked to build to .65 CF loaded in size and builder asked if i want a shared or separate spaces and what is the requirement of the Reverberation kick back. Anyone know what this should be? i shot Nick Lemon...