medley123 Posted July 24, 2012 Report Share Posted July 24, 2012 I just recently built a box for 2 DC lvl 4 XLs 15s with PSI recones, around 7 cubes after discplacement, tuned to 28 hz. Tuned the amp with the DD-1 and everything worked great. Out of nowhere though the right sub started making a slapping kind of noise and was putting out a lot less than the other one. I don't know if it's blown though, I pressed in the cone and heard no coil rubbing or any sound at all really, and I checked it on the DMM and it still reads about 1.4-1.5 (both are dual 1.4s). Is there anything else I could do to check this? maybe free-air it or something to see. Also i'm not sure if i wired it right, maybe i wired it out of phase i'll double check when i get home, but is the wiring just series/parallel? with a wire connecting a pos and negative terminal on each sub and then the other wire going to the amp? 2006 Ford EscapeHead Unit: Kenwood KDC 352Subs: (3) 15" DC XL 15s with PSI recones, 1.4 ohm coilsSub amp: DD Audio M4 (Black Version)Door Speakers: (2) Crossfire 10s, (2) Hertz Coax.Mid/highs amp: Rockford Fosgate P500-4 Electrical:XS D3400 under the hood(3) XS XP3000s in the back2 runs of KnuKonceptz OFC 0 Gauge ran to the back (1 pos, 1 neg)Excessive Amperage 300 amp alt (FINALLY!) Link to comment Share on other sites More sharing options...
LZTYBRN Posted July 24, 2012 Report Share Posted July 24, 2012 Also i'm not sure if i wired it right, maybe i wired it out of phase This was my first thought. Not sure if it'd account for the slapping noise though... but is the wiring just series/parallel? with a wire connecting a pos and negative terminal on each sub and then the other wire going to the amp? If you want a final load of 1.4, yes. And did you check each coil individually or just the final load? Link to comment Share on other sites More sharing options...
medley123 Posted July 24, 2012 Author Report Share Posted July 24, 2012 Also i'm not sure if i wired it right, maybe i wired it out of phase This was my first thought. Not sure if it'd account for the slapping noise though... but is the wiring just series/parallel? with a wire connecting a pos and negative terminal on each sub and then the other wire going to the amp? If you want a final load of 1.4, yes. And did you check each coil individually or just the final load? I checked each coil individually 2006 Ford EscapeHead Unit: Kenwood KDC 352Subs: (3) 15" DC XL 15s with PSI recones, 1.4 ohm coilsSub amp: DD Audio M4 (Black Version)Door Speakers: (2) Crossfire 10s, (2) Hertz Coax.Mid/highs amp: Rockford Fosgate P500-4 Electrical:XS D3400 under the hood(3) XS XP3000s in the back2 runs of KnuKonceptz OFC 0 Gauge ran to the back (1 pos, 1 neg)Excessive Amperage 300 amp alt (FINALLY!) Link to comment Share on other sites More sharing options...
Sergeant_Skyrim Posted July 24, 2012 Report Share Posted July 24, 2012 I had a slapping noise with my ZCON and found that the dust cap had come unglued from the cone surrounding it. Have you checked that yet? Build in progress Link to comment Share on other sites More sharing options...
Kingcuong5o4 Posted July 24, 2012 Report Share Posted July 24, 2012 Maybe some glue dripped down from the dust cap into the coil. That's what happened to one of my sub Link to comment Share on other sites More sharing options...
medley123 Posted July 26, 2012 Author Report Share Posted July 26, 2012 Well i checked it and felt like an idiot, the wire i had running + to - terminals on the sub had come lose and was causing the sub to run in series and completely out of phase with the other lol, got it all fixed, but i do think the dustcap might be an issue also. When i touch it i can feel and hear a little pop like i just pressed it in and it pop'd back into shape or something, gonna look at that this weekend 2006 Ford EscapeHead Unit: Kenwood KDC 352Subs: (3) 15" DC XL 15s with PSI recones, 1.4 ohm coilsSub amp: DD Audio M4 (Black Version)Door Speakers: (2) Crossfire 10s, (2) Hertz Coax.Mid/highs amp: Rockford Fosgate P500-4 Electrical:XS D3400 under the hood(3) XS XP3000s in the back2 runs of KnuKonceptz OFC 0 Gauge ran to the back (1 pos, 1 neg)Excessive Amperage 300 amp alt (FINALLY!) Link to comment Share on other sites More sharing options...
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