Nightshade Posted November 3, 2009 Report Share Posted November 3, 2009 If you keep the same size box more port area will bring the rise down some. If you go to a larger box and keep the same port area your rise will go down some. If you do a larger box and more port area your rise will go down quite a bit but I don't reccomend that. What is your current box volume and you are running 2 6" ports right? I can give you a port/box volume ratio that should help you bring down your impedence rise quite a bit. 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...
Eric B Posted November 3, 2009 Report Share Posted November 3, 2009 (edited) that would mean running them at .25ohm each. not really comfortable with that. not with only 2 batteries at least. well u have about a 5x rise.. do the math.. ull have a final strapped load of wat .5ohm? therefore when u burp that frequency itll be at about 2.5ohm but slow roll on the volume Edited November 3, 2009 by Eric B Quote 2007 Chevy HHR LT UNDER CONSTRUCTION 1st Place Loud N Low 2010 MWSPL Finals 3rd Place Xtreme 3 2010 MWSPL Finals Link to comment Share on other sites More sharing options...
IH8PunkRok Posted November 3, 2009 Report Share Posted November 3, 2009 well u have about a 5x rise.. do the math.. ull have a final strapped load of wat .5ohm? therefore when u burp that frequency itll be at about 2.5ohm but slow roll on the volume at 45 hz yes. but at other frequencies where impedence isnt so high... poof! smoke city Quote -Matt2005 Dodge Magnum RTJVC KD-AVX1 2 PPI S580.2 Obsidian Audio ST1 Horn Tweeters PRV 8MB450s Audio Legion 3500.1D 2 RE MT 18s 360 ah LiFePO4 BatterySHCA 2/0 155.2 @ 29 hzKicker CVR 15's buildDD 3512e buildMini T-Line Build(6) 8s BuildNightshade 15s Wall BuildMagnum AB XFL 12s BuildNewest Magnum Build Link to comment Share on other sites More sharing options...
Eric B Posted November 3, 2009 Report Share Posted November 3, 2009 at 45 hz yes.but at other frequencies where impedence isnt so high... poof! smoke city well duh lol Quote 2007 Chevy HHR LT UNDER CONSTRUCTION 1st Place Loud N Low 2010 MWSPL Finals 3rd Place Xtreme 3 2010 MWSPL Finals Link to comment Share on other sites More sharing options...
IH8PunkRok Posted November 3, 2009 Report Share Posted November 3, 2009 he never specified burp or music so i assumed music. was i wrong? oops Quote -Matt2005 Dodge Magnum RTJVC KD-AVX1 2 PPI S580.2 Obsidian Audio ST1 Horn Tweeters PRV 8MB450s Audio Legion 3500.1D 2 RE MT 18s 360 ah LiFePO4 BatterySHCA 2/0 155.2 @ 29 hzKicker CVR 15's buildDD 3512e buildMini T-Line Build(6) 8s BuildNightshade 15s Wall BuildMagnum AB XFL 12s BuildNewest Magnum Build Link to comment Share on other sites More sharing options...
skittlesRgood Posted November 3, 2009 Author Report Share Posted November 3, 2009 (edited) .25.... before rise......U talking for a burp or for music? this is my daily system so music is always played on it. If you keep the same size box more port area will bring the rise down some. If you go to a larger box and keep the same port area your rise will go down some. If you do a larger box and more port area your rise will go down quite a bit but I don't reccomend that.What is your current box volume and you are running 2 6" ports right? I can give you a port/box volume ratio that should help you bring down your impedence rise quite a bit. 5 cubes. two 6" flared PSP ports. ya man, any help you can give, im all ears. at 45 hz yes.but at other frequencies where impedence isnt so high... poof! smoke city exactly my thought. since it'll be playing music, i think i have to look at the box for this answer. i didnt get a chance to test other frequencies today. ill try to get it done tomorrow and post the results. Edited November 3, 2009 by skittlesRgood Quote If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood. Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s. http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/ Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build Yeah. im pretty sure they dont warranty retarded people. Link to comment Share on other sites More sharing options...
skittlesRgood Posted November 3, 2009 Author Report Share Posted November 3, 2009 bump for more tips. i had hoped jacob would have more to say on this. Quote If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood. Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s. http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/ Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build Yeah. im pretty sure they dont warranty retarded people. Link to comment Share on other sites More sharing options...
Nightshade Posted November 3, 2009 Report Share Posted November 3, 2009 My opinion for a new box that will keep rise down more than what you have now is starting out with 4.5 cubes and a single 8" flared port. Then if that's not quite where you want it shrinking down the box to 4 cubes and makking the port longer to keep tuning where you want it. What do you have your box tuned to now? If it's really low that is definately part of the reason that your rise is so high. The lower you tune the more rise and less power your amps will make. The higher you tune the less rise and more power is made. That's part of Jacob's success with boxes tuned pretty high and burping them in the 50's help to keep rise down. 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...
fritosaregood Posted November 3, 2009 Report Share Posted November 3, 2009 wat is the box tuned at. my imp rise at my box tune is highest. but its more efficient. also keeps the voltage up. Quote seller feedback: http://www.stevemeadedesigns.com/board/ind...showtopic=61719 http://www.stevemeadedesigns.com/board/ind...showtopic=68281 build log: http://www.stevemeadedesigns.com/board/index.php?showtopic=44800 Gf's build: http://www.stevemeadedesigns.com/board/topic/54346-kickergirls-camaro-new-box-pg-5/#entry753970 Link to comment Share on other sites More sharing options...
audiofanaticz Posted November 3, 2009 Report Share Posted November 3, 2009 i have 2 saz-1500's strapped at 2.5ohm. My first concern is how you have a 2.5 ohm load? Do you possibly have a dead coil and or a coil that is not making a great connection? Maybe your solder failed? What ohm coils do you have? Also how do you have your speakers wired? Series, parallel, or a combo of both? Are you running a pos and neg from each coil to your amps? Do you have your coils wired together at the sub and then just one set of speaker wires per sub going to the amp? Do you have both subs wired together inside the box and then just 1 set of speaker wires going to the amp? Did you try unstrapping your amps and running 1 sub per amp to see if you would have less rise? Your asking for ideas, so im just shooting some out there. Quote Link to comment Share on other sites More sharing options...
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