Bass head 4-15s Posted June 9, 2015 Report Share Posted June 9, 2015 Do any of you guys think if I add sound deadening to the roof of my suv will my db numbers go up or down I got 4-15s and a bc5500 amp. Am doing 152.4 now thanks guys. Link to comment Share on other sites More sharing options...
firebirdude Posted June 9, 2015 Report Share Posted June 9, 2015 Oh it'll probably go down man. You don't want to deaden any sound.... Link to comment Share on other sites More sharing options...
Jessica Posted June 9, 2015 Report Share Posted June 9, 2015 some people gain, some lose when adding deadener. Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13 Link to comment Share on other sites More sharing options...
Bass head 4-15s Posted June 9, 2015 Author Report Share Posted June 9, 2015 Ok thanks guy. Link to comment Share on other sites More sharing options...
Nightshade Posted June 9, 2015 Report Share Posted June 9, 2015 By adding deadener you will more than likely change the resonant frequency of your vehicle. This can hurt of help you depending on the tuning of your enclosure. When you add deadener to the roof of your vehicle your frequency will most likely drop by a couple of hertz. I have had cases where adding deadener has really helped my score but it has also dropped it by 3db in other cases. Where you are adding it at makes a huge difference. I have never had luck when adding it to the roof of my vehicle for some reason, but if you do and it doesn't work out it is going to be a bitch to get off. 2013 VW Jetta GLI 2.0 Turbo 1 Sundown Audio SCV2000 1 Sundown Audio X15 V2 1 XS Power D3100 Audio Control LC6i Stock Deck 146.4 sealed on the dash at 37hz 2001 Focus ZX3: RETIRED Team Sundown Audio, Team XS Power, 2 time NSPL Car 3601-Up Champion, 2 time NSPL Car Hardcore ChampionHighest NSPL Scores to date:154.3db on the dash sealed at 46hz, 156.2db in the kick at 46hz155.2db unofficial on dash at 43hz Link to comment Share on other sites More sharing options...
Bass head 4-15s Posted June 9, 2015 Author Report Share Posted June 9, 2015 Ok thanks man I will just leave it along for now. Link to comment Share on other sites More sharing options...
NorCal SPL Posted June 9, 2015 Report Share Posted June 9, 2015 tahoes gain a lot by deadening the roof. other cars, i dont know. my explorer gained a lot from deadening the hatch. www.LowHertzCarAudio.com IG: LowHertzCarAudio Facebook: Low Hertz Car Audio www.lowhertzcaraudio.com 2015 Top Dog Champion Limitless Lithium West Coast Warehouse Link to comment Share on other sites More sharing options...
Bass head 4-15s Posted June 10, 2015 Author Report Share Posted June 10, 2015 Well I got a 01 expedition so I put one layer on the hatch it went up from 152.36 to 52.44. Link to comment Share on other sites More sharing options...
NorCal SPL Posted June 12, 2015 Report Share Posted June 12, 2015 my team mate with an identical tahoe to mine said 2 layers on the roof gave him almost a full db. other cars lose a lot. so its just a trail and error. thank god my trail and error ended up with it helping. i couldnt imagine having to pull that shit off. lol www.LowHertzCarAudio.com IG: LowHertzCarAudio Facebook: Low Hertz Car Audio www.lowhertzcaraudio.com 2015 Top Dog Champion Limitless Lithium West Coast Warehouse Link to comment Share on other sites More sharing options...
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