Nikitaaa Posted May 24, 2012 Report Share Posted May 24, 2012 Okay boys and girls, I have a couple questions. First, my box for my single 18 is around 6^3 tuned to 36.5 with 15.5 of port per 1^3. My box is REALLY peaky. Like.. Beyond peaky. Lows pretty much are non existent. 1) will inverting my sub flatten out the response a bit and help it play a bit lower? 2) if I add about .75 peice of mdf to the side of the port, it would drop my port area to about 13 and tuning to about 34ish. Is this worth makin my box look weird? Will it help flatten the response? Anyways, this box is like 2db louder at 42hz than 40hz. It's that bad. Quote 2007 M/T Honda Civic Coupe EX (4) Sundown Audio X-8's (2) Ampere Audio 3800.1's (3) Stinger SPV-44 Batteries (1) Mechman 240 3:1 Ratio 4th order sealed from the trunkTEAM NWSPLBest termlab scores to date in Honda trunk:151.7db legal (official) IASCA trunk 3 classBest termlab scores to date in my walled Subie:152.9db legal (unofficial) IASCA advanced 2 class155db outlaw Link to comment Share on other sites More sharing options...
heckvr4 Posted May 24, 2012 Report Share Posted May 24, 2012 (edited) what sub are you using ? edit* just read yr sig , yeah it might be too much port area on yr current box , test with a lil bit less . . . test test test Edited May 24, 2012 by heckvr4 Quote 05 f150 4 18'' DC lvl6 2 DC AUDIO 9.0ks 161.3 @ 44HZ build log here96 tahoe http://www.stevemeadedesigns.com/board/topic/160522-8-18xls2-dc-100k4th-order/page-9 Link to comment Share on other sites More sharing options...
ALPINE408 Posted May 24, 2012 Report Share Posted May 24, 2012 (edited) From my tests 99% of the time a peaky box comes from low power I have seen it 100 times adding power (watts) takes the peakness away So you can ether change the box or add power to fix Edited May 24, 2012 by Team Bassick (ALPINE) Quote Have you ever had your woofers blown? Link to comment Share on other sites More sharing options...
kirill007 Posted May 24, 2012 Report Share Posted May 24, 2012 (edited) He has a PSI recone... on a sonic sound lab. Lower port area and tuned lower should help with the lack of lows at high volume. A new bigger box is needed i assume with the PSI recone. Inverting the sub won't really help, but try and see for yourself. Team bassick, you can't play LOUD all the time so he should better fix the box. Because if he says that the box is peaky, then it must be really peaky. Btw, you won't hear a 2db difference. Edited May 24, 2012 by kirill007 Quote Thinking is the root of all problems... You ALWAYS get what you pay for. Link to comment Share on other sites More sharing options...
Nikitaaa Posted May 24, 2012 Author Report Share Posted May 24, 2012 (edited) I would try building a 2:1 4th and take down my back seats if I knew the fs and qts of the sub.. But psi told me theat they couldn't tell me.. Are you all saying I should build a bigger box? The only problem with that is I dont have any more room in my hatch then the box I currently have(with back seats up) Edited May 24, 2012 by Nikitaaa Quote 2007 M/T Honda Civic Coupe EX (4) Sundown Audio X-8's (2) Ampere Audio 3800.1's (3) Stinger SPV-44 Batteries (1) Mechman 240 3:1 Ratio 4th order sealed from the trunkTEAM NWSPLBest termlab scores to date in Honda trunk:151.7db legal (official) IASCA trunk 3 classBest termlab scores to date in my walled Subie:152.9db legal (unofficial) IASCA advanced 2 class155db outlaw Link to comment Share on other sites More sharing options...
ALPINE408 Posted May 24, 2012 Report Share Posted May 24, 2012 He has a PSI recone... on a sonic sound lab. Lower port area and tuned lower should help with the lack of lows at high volume. A new bigger box is needed i assume with the PSI recone. Inverting the sub won't really help, but try and see for yourself. Team bassick, you can't play LOUD all the time so he should better fix the box. Because if he says that the box is peaky, then it must be really peaky. Btw, you won't hear a 2db difference. Never seen a box act "peaky" at low volumes??????? Only at near or full tilt Quote Have you ever had your woofers blown? Link to comment Share on other sites More sharing options...
kirill007 Posted May 24, 2012 Report Share Posted May 24, 2012 (edited) He has a PSI recone... on a sonic sound lab. Lower port area and tuned lower should help with the lack of lows at high volume. A new bigger box is needed i assume with the PSI recone. Inverting the sub won't really help, but try and see for yourself. Team bassick, you can't play LOUD all the time so he should better fix the box. Because if he says that the box is peaky, then it must be really peaky. Btw, you won't hear a 2db difference. Never seen a box act "peaky" at low volumes??????? Only at near or full tilt was that sarcasm or what? I said myself that lower port area will help at higher volume, but not as much at low volume. Yes, higher volume can make it sound less peaky.( most of the time it sounds lower with more power.) EDIT: Nevermind, Team bassick , i can't seem to express myself correctly. Edited May 25, 2012 by kirill007 Quote Thinking is the root of all problems... You ALWAYS get what you pay for. Link to comment Share on other sites More sharing options...
ALPINE408 Posted May 24, 2012 Report Share Posted May 24, 2012 no sarcasim at all im not following you.. all peaky boxes are peaky at or near full tilt at half deck volume or lower there is no peakness are you talking about your changes that you suggested on the box? i am not, im talking about peaky boxes in genral Quote Have you ever had your woofers blown? Link to comment Share on other sites More sharing options...
Sanitarium Posted May 24, 2012 Report Share Posted May 24, 2012 shrink the port some usually does the trick for me. Quote Link to comment Share on other sites More sharing options...
Nikitaaa Posted May 24, 2012 Author Report Share Posted May 24, 2012 Dimensions of my box are; 17.25h, 41w, and 24d. Port is 15.75h, 6w, and 20.75L. Double baffle with like .2 of bracing and .28 sub displacement.. If anybody could do something with winisd to show my why my box is peaky it would be great! Quote 2007 M/T Honda Civic Coupe EX (4) Sundown Audio X-8's (2) Ampere Audio 3800.1's (3) Stinger SPV-44 Batteries (1) Mechman 240 3:1 Ratio 4th order sealed from the trunkTEAM NWSPLBest termlab scores to date in Honda trunk:151.7db legal (official) IASCA trunk 3 classBest termlab scores to date in my walled Subie:152.9db legal (unofficial) IASCA advanced 2 class155db outlaw Link to comment Share on other sites More sharing options...
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