Nightshade Posted March 13, 2009 Report Share Posted March 13, 2009 For a hatch subs up and port back is usually the loudest, but in some cases sub up and port to the drivers side is louder. I am speaking from experience as I am a hatch owner. I would have done my new setup subs up and port to the drivers side but I couldn't fit 2 15's that way. The reason why some cars get louder when there is a window or sunroof open is because the car has a standing wave. When you open the window your allowing the wave to reach it's peak outside the car and it registers a higher spl inside the vehicle. It all has to do with the distance that your box is from the listening environment. Some cars the wave peaks right at the dash and is good for spl. Other cars the wave is peaking outside the car 3 feet in front of the dash and when you vent the vehicle you allow that wave to travel it's required distance making it louder. My car is one of those cars that is louder if it is sealed up. I do gain a tenth or two on the meter when the sunroof is open, but if the windows are open it doesn't help. Quote 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...
dekim8891 Posted March 14, 2009 Report Share Posted March 14, 2009 This is my old system i installed myself, well those are two directed audio 15s pumped by a hifonics 7500.1 amp. well they hit a 142 at a show in tampa last year. Funny part is i blew my amp poundin' it on the way home so i just sold the subs. oh and the other amp is hooked to my 6 inch closed back eminence in the doors. I need to know if anyone has ever heard of this brand of speaker or seen them in someone elses ride cause about 100% of anyone i talk to says" dawg I've never seen those speakers before". BTW I know the installation looks a little shady but the only thing that mattered to me was that you got the point when you heard me rolling down the street. anyway let me know if you seen someone else with these subs cause they don't seem to be popular but are definetly capable of producing some dbs. Quote Link to comment Share on other sites More sharing options...
ChiTownTBird312 Posted March 14, 2009 Report Share Posted March 14, 2009 (edited) This is my old system i installed myself, well those are two directed audio 15s pumped by a hifonics 7500.1 amp. well they hit a 142 at a show in tampa last year. Funny part is i blew my amp poundin' it on the way home so i just sold the subs. oh and the other amp is hooked to my 6 inch closed back eminence in the doors. I need to know if anyone has ever heard of this brand of speaker or seen them in someone elses ride cause about 100% of anyone i talk to says" dawg I've never seen those speakers before". BTW I know the installation looks a little shady but the only thing that mattered to me was that you got the point when you heard me rolling down the street. anyway let me know if you seen someone else with these subs cause they don't seem to be popular but are definetly capable of producing some dbs. alright.... and yes...im sure most people that have been around car audio a while know of that brand...but what does that have to do with this thread? Edited March 14, 2009 by ChiTownTBird312 Quote Matt W. 1996 Thunderbird LX Sport 4.6 new system soon...still deciding on what to get. Link to comment Share on other sites More sharing options...
Nightshade Posted March 14, 2009 Report Share Posted March 14, 2009 alright....and yes...im sure most people that have been around car audio a while know of that brand...but what does that have to do with this thread? X2, I was thinking the same thing. Quote 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...
audiofanaticz Posted March 14, 2009 Report Share Posted March 14, 2009 what speakers? Directed? You can buy those subs right now for 25-60 a piece depending on the model, they where all on close out but they maybe out of stock already since directed stopped making them and are focusing on orion Quote Link to comment Share on other sites More sharing options...
Sampsonite Posted March 14, 2009 Report Share Posted March 14, 2009 thread jack from hell, lol! Quote --Sampson 816-591-6592 www.kcrimshop.com Link to comment Share on other sites More sharing options...
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