inputs.text: unbelievable - sub truly everything made replaced 2 jackhammer 12s wanted trunk back hoping wouldnt lose bass skeptical single 8 could blown away big heavy thing excited try outmy brotherinlaw sold trying sub sealed box bought one 20 tried major failure sealed box dimensions given sundowns website bandpass box specs dont worry trying sealed box assure sounds like crapto redeem bought mobile soundworks custom ported box w 75 cuft 34 hz nearly tuning sub 35 hz mated mtx jackhammer 600w rms mono amp hit hard got cleaner sound better punch 12s would expect really impressed lows opinion better jl 10w2 bet sa8 v2 would sound even better higher quality ampsummary spent almost 300 sub box takes 13 space old box sound quality solid doesnt sound like 12 imo no complaints also fun blow minds reveal 8