fosgatefan821 Posted August 17, 2011 Report Share Posted August 17, 2011 i have a quick question... my freind has 2 old school diamond audio 12s dual 4 ohm in ported box...he hooked a aq 750 to it and one subs sounded like paper beigng crumbled. so we took it out of enclosue and it sounded fien no bad sound what so ever . as soon as we put back in box teh sound came back ..the other sub is fine and is loud. i really am out of thoughts on what it could be ..i think maybe the speaker is blown but i honestly dont know..i was gonna put teh other sub in the hole but its such a pain to take them out .. thanks for any help 2007 Ford Ranger (ALL YET TO BE INSTALLED - DUE TO WORK SCHEDULES) K&N Performance Air Intake Massive Audio D2400 Mono Amplifier 2 Custom Built 8" Subwoofers in Ported Enclosure Pioneer AVH-P4400BH In Dash Double Din DVD Player (Video Bypassed) 4 - Pioneer TS-A6886R 6" X 8" 2 - SMD Heavy Duty Single ANL Fuse Blocks 2- Stinger SPP1200 Dry Cell Batteries JL AUDIO Interconnects 2/0 Gauge Big 3 ILL Customz 8 Spot Flat Lug Style Bolt Down Terminals ILL Customz 1/0 to 4 Gauge Power / Ground Reducers Factory Alternator __________________________________________________________________________________________________________________________________ 2002 Cheverlot Monte Carlo SS - (Deceased) 2 - Rockford Fosgate Power 1501BD 1 - Rockford Fosgate Power 851x Rockford Fosgate Power 6 1/2 Components Rockford Fosgate Power 3 way 6x9 2 - JL Audio W7 13.5" Subwoofers (Sealed) Pioneer AVH-P4400BH In - Dash DVD Player Pioneer AVIC - U250 - Add-on GPS Navigation System Audio Control 6XS 4 Way Crossover / Line Driver Ohio Generator 200 Amp Alternator 3 - Stinger SPP1200 Batteries 1 - Optima D34/78 Battery Link to comment Share on other sites More sharing options...
mullet Posted August 17, 2011 Report Share Posted August 17, 2011 Could be something as simple as a leak around where the sub is screwed into the box or the baffle itself vibrating. Take a meter to the coils and make sure they read fine and go from there. Link to comment Share on other sites More sharing options...
fosgatefan821 Posted August 17, 2011 Author Report Share Posted August 17, 2011 Could be something as simple as a leak around where the sub is screwed into the box or the baffle itself vibrating. Take a meter to the coils and make sure they read fine and go from there. i did the meter and it was 2.3ohms which should be correct since i wired it to ohms correct? i also noticed that when sub was out of box there was more than 8 holes for bolts like as if someone drilled new holes to mount it ya know and i also notice there was a cover that covered the screws so u couldnt see them adn imnot sure if those holes are letting air out as well 2007 Ford Ranger (ALL YET TO BE INSTALLED - DUE TO WORK SCHEDULES) K&N Performance Air Intake Massive Audio D2400 Mono Amplifier 2 Custom Built 8" Subwoofers in Ported Enclosure Pioneer AVH-P4400BH In Dash Double Din DVD Player (Video Bypassed) 4 - Pioneer TS-A6886R 6" X 8" 2 - SMD Heavy Duty Single ANL Fuse Blocks 2- Stinger SPP1200 Dry Cell Batteries JL AUDIO Interconnects 2/0 Gauge Big 3 ILL Customz 8 Spot Flat Lug Style Bolt Down Terminals ILL Customz 1/0 to 4 Gauge Power / Ground Reducers Factory Alternator __________________________________________________________________________________________________________________________________ 2002 Cheverlot Monte Carlo SS - (Deceased) 2 - Rockford Fosgate Power 1501BD 1 - Rockford Fosgate Power 851x Rockford Fosgate Power 6 1/2 Components Rockford Fosgate Power 3 way 6x9 2 - JL Audio W7 13.5" Subwoofers (Sealed) Pioneer AVH-P4400BH In - Dash DVD Player Pioneer AVIC - U250 - Add-on GPS Navigation System Audio Control 6XS 4 Way Crossover / Line Driver Ohio Generator 200 Amp Alternator 3 - Stinger SPP1200 Batteries 1 - Optima D34/78 Battery Link to comment Share on other sites More sharing options...
ChevyBoy95 Posted August 17, 2011 Report Share Posted August 17, 2011 take it out and free air it and see if it makes a weird sound. Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's] BL : http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/YouTube: http://www.youtube.com/hitemwiththeflex/ Link to comment Share on other sites More sharing options...
mullet Posted August 17, 2011 Report Share Posted August 17, 2011 Is there a gasket on the mounting flange of the sub? If there's extra mounting holes and the sub just isn't sealing to the box right you could easily get some noises from it. Since you mentioned it doesn't make any noise when not in the box, go get some weather stripping tape and put it around the underside of the mounting flange. Should seal everything up and could get rid of your noise. If not, you have some other problem. Link to comment Share on other sites More sharing options...
fosgatefan821 Posted August 17, 2011 Author Report Share Posted August 17, 2011 Is there a gasket on the mounting flange of the sub? If there's extra mounting holes and the sub just isn't sealing to the box right you could easily get some noises from it. Since you mentioned it doesn't make any noise when not in the box, go get some weather stripping tape and put it around the underside of the mounting flange. Should seal everything up and could get rid of your noise. If not, you have some other problem. ok sounds good i will try that in next couple days and post results thank alot 2007 Ford Ranger (ALL YET TO BE INSTALLED - DUE TO WORK SCHEDULES) K&N Performance Air Intake Massive Audio D2400 Mono Amplifier 2 Custom Built 8" Subwoofers in Ported Enclosure Pioneer AVH-P4400BH In Dash Double Din DVD Player (Video Bypassed) 4 - Pioneer TS-A6886R 6" X 8" 2 - SMD Heavy Duty Single ANL Fuse Blocks 2- Stinger SPP1200 Dry Cell Batteries JL AUDIO Interconnects 2/0 Gauge Big 3 ILL Customz 8 Spot Flat Lug Style Bolt Down Terminals ILL Customz 1/0 to 4 Gauge Power / Ground Reducers Factory Alternator __________________________________________________________________________________________________________________________________ 2002 Cheverlot Monte Carlo SS - (Deceased) 2 - Rockford Fosgate Power 1501BD 1 - Rockford Fosgate Power 851x Rockford Fosgate Power 6 1/2 Components Rockford Fosgate Power 3 way 6x9 2 - JL Audio W7 13.5" Subwoofers (Sealed) Pioneer AVH-P4400BH In - Dash DVD Player Pioneer AVIC - U250 - Add-on GPS Navigation System Audio Control 6XS 4 Way Crossover / Line Driver Ohio Generator 200 Amp Alternator 3 - Stinger SPP1200 Batteries 1 - Optima D34/78 Battery Link to comment Share on other sites More sharing options...
blownengine Posted August 17, 2011 Report Share Posted August 17, 2011 If you push on the cone does it make a scraping noise? (The coil rubbing on the walls) Be sure to push the cone evenly and straight down 2003 Dodge Ram 1500 SLT (Yea its got a Hemi)Alpine CDA-105KnuKonceptz 0ga CCA Big 3 with Yellow Top 15" SoundQubed HDC3DC Audio 1.2K (Bass)Pioneer 6x9's (Front)Pioneer 6.5's (Rear)Kicker 3.5's (Dash)Sony amp on the highs. (Hey it was free) Link to comment Share on other sites More sharing options...
fosgatefan821 Posted August 17, 2011 Author Report Share Posted August 17, 2011 If you push on the cone does it make a scraping noise? (The coil rubbing on the walls) Be sure to push the cone evenly and straight down i tried that and no noises at all 2007 Ford Ranger (ALL YET TO BE INSTALLED - DUE TO WORK SCHEDULES) K&N Performance Air Intake Massive Audio D2400 Mono Amplifier 2 Custom Built 8" Subwoofers in Ported Enclosure Pioneer AVH-P4400BH In Dash Double Din DVD Player (Video Bypassed) 4 - Pioneer TS-A6886R 6" X 8" 2 - SMD Heavy Duty Single ANL Fuse Blocks 2- Stinger SPP1200 Dry Cell Batteries JL AUDIO Interconnects 2/0 Gauge Big 3 ILL Customz 8 Spot Flat Lug Style Bolt Down Terminals ILL Customz 1/0 to 4 Gauge Power / Ground Reducers Factory Alternator __________________________________________________________________________________________________________________________________ 2002 Cheverlot Monte Carlo SS - (Deceased) 2 - Rockford Fosgate Power 1501BD 1 - Rockford Fosgate Power 851x Rockford Fosgate Power 6 1/2 Components Rockford Fosgate Power 3 way 6x9 2 - JL Audio W7 13.5" Subwoofers (Sealed) Pioneer AVH-P4400BH In - Dash DVD Player Pioneer AVIC - U250 - Add-on GPS Navigation System Audio Control 6XS 4 Way Crossover / Line Driver Ohio Generator 200 Amp Alternator 3 - Stinger SPP1200 Batteries 1 - Optima D34/78 Battery Link to comment Share on other sites More sharing options...
fosgatefan821 Posted August 24, 2011 Author Report Share Posted August 24, 2011 If you push on the cone does it make a scraping noise? (The coil rubbing on the walls) Be sure to push the cone evenly and straight down i tried that and no noises at all after putting stripping around sub and making sure no other holes in box teh nasty sound went away.....thank you very much for all the help... 2007 Ford Ranger (ALL YET TO BE INSTALLED - DUE TO WORK SCHEDULES) K&N Performance Air Intake Massive Audio D2400 Mono Amplifier 2 Custom Built 8" Subwoofers in Ported Enclosure Pioneer AVH-P4400BH In Dash Double Din DVD Player (Video Bypassed) 4 - Pioneer TS-A6886R 6" X 8" 2 - SMD Heavy Duty Single ANL Fuse Blocks 2- Stinger SPP1200 Dry Cell Batteries JL AUDIO Interconnects 2/0 Gauge Big 3 ILL Customz 8 Spot Flat Lug Style Bolt Down Terminals ILL Customz 1/0 to 4 Gauge Power / Ground Reducers Factory Alternator __________________________________________________________________________________________________________________________________ 2002 Cheverlot Monte Carlo SS - (Deceased) 2 - Rockford Fosgate Power 1501BD 1 - Rockford Fosgate Power 851x Rockford Fosgate Power 6 1/2 Components Rockford Fosgate Power 3 way 6x9 2 - JL Audio W7 13.5" Subwoofers (Sealed) Pioneer AVH-P4400BH In - Dash DVD Player Pioneer AVIC - U250 - Add-on GPS Navigation System Audio Control 6XS 4 Way Crossover / Line Driver Ohio Generator 200 Amp Alternator 3 - Stinger SPP1200 Batteries 1 - Optima D34/78 Battery Link to comment Share on other sites More sharing options...
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