Stee-Z Posted March 18, 2012 Report Share Posted March 18, 2012 I just put my new box in today 16" ft3 port @ 36hz.. it all hit real hard n sounded great way better than my old box, but now when i turn the volume up to bout 20 / 45 theirs like apopping type of noise itl b doing , kind of like if ur sub trys and play under tuning or reaaall bad clipping, my port is along the bottom of the box....could this noise be coming from port hitting the trunk? i meen the box sits 2" away from the end of the trunk . Any help would be great Quote (4)DD 9918's (2)DC 10k 8 6.5" focals 2 DD SS4 mid amps Audison Bit One processor Jl-cl-rlc line driver iPad in dash Dual Irragi 320a alts 8 batcaps 4000's Second Skin sound deadened Link to comment Share on other sites More sharing options...
baaudio Posted March 18, 2012 Report Share Posted March 18, 2012 what kinda port did you use? ive had plastic flare ports do this to me before... most annoying thing ever. i put a piece of carpet under the lip in the box and presto no noise Quote Team NWSPL baaudio Build Log 2001 GMC Sierra walkthrough 4 Mechman Elite 370s, 10 AGM batteries, 3 Crossfire XS v2 18s, Crossfire 8k Link to comment Share on other sites More sharing options...
JasonJones Posted March 18, 2012 Report Share Posted March 18, 2012 Any way you could post up a vid so we can attempt to hear the noise? And obviously a dumb question but your SSF is turned on on your amp right? Quote Link to comment Share on other sites More sharing options...
Stee-Z Posted March 18, 2012 Author Report Share Posted March 18, 2012 hahah yes yes, its all where the old settings were, just turned subsonic up a bit and lpf since box is tuned higher. and its just an l port Quote (4)DD 9918's (2)DC 10k 8 6.5" focals 2 DD SS4 mid amps Audison Bit One processor Jl-cl-rlc line driver iPad in dash Dual Irragi 320a alts 8 batcaps 4000's Second Skin sound deadened Link to comment Share on other sites More sharing options...
SnowDrifter Posted March 18, 2012 Report Share Posted March 18, 2012 How wide is your port? Did you brace it? It might just be flexing and slapping against the floor. Quote ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
Stee-Z Posted March 18, 2012 Author Report Share Posted March 18, 2012 ok here are my box specs, 16" tall.. with double baffle .75" mdf... 28" wide and 30" deep, port is 26.5" wide and 26" deep which is roughly 36 hz. port isn't braced, i never did on my old box, but that was also vertical not horizantal like the new box Quote (4)DD 9918's (2)DC 10k 8 6.5" focals 2 DD SS4 mid amps Audison Bit One processor Jl-cl-rlc line driver iPad in dash Dual Irragi 320a alts 8 batcaps 4000's Second Skin sound deadened Link to comment Share on other sites More sharing options...
gogojjt Posted March 18, 2012 Report Share Posted March 18, 2012 could be subs bottoming out!!! i built a box for a buddy of mine once, beast of a box ported to 32hz, no problems with the box and like you when volume turned up just over half, hella popping-scary noise!!! i tested all the voice coils(came back fine) and the amp gain was barely up with a little bass boost. the subs were brand new from kicker(compvx's, the best ones they make). i sent them back to kicker and got new subs, put them in and no more noise(i did upgrade to 8 gauge for the sub wiring too, i did have 12 gauge, so that might of helped). but before i sent the subs back, i did some research on the web and all came back to subs bottoming out. in my case i think the first batch of subs had a default in the construction... Quote Link to comment Share on other sites More sharing options...
Stee-Z Posted March 18, 2012 Author Report Share Posted March 18, 2012 it shouldnt be that the , they are barely hitting at that volume! oh and when i was swapping the sub from the old box i could see probly half an inch of the coil.. and it was like the color of a raisin kinda of browinish darker, not like copper....... i don't remember it coming like that Quote (4)DD 9918's (2)DC 10k 8 6.5" focals 2 DD SS4 mid amps Audison Bit One processor Jl-cl-rlc line driver iPad in dash Dual Irragi 320a alts 8 batcaps 4000's Second Skin sound deadened Link to comment Share on other sites More sharing options...
gogojjt Posted March 18, 2012 Report Share Posted March 18, 2012 what is your port height? and are the other measurements outside or inside diameter? subs brand/model? how many? other than port noise due to a bad design/miscalculation ...and other than posting a video to hear the noise, idk man!!!! Quote Link to comment Share on other sites More sharing options...
Stee-Z Posted March 18, 2012 Author Report Share Posted March 18, 2012 oh yeh woops port is 2" high, running a 9515 DD and no deigns is all good for the box.. running on an AQ 2200 Quote (4)DD 9918's (2)DC 10k 8 6.5" focals 2 DD SS4 mid amps Audison Bit One processor Jl-cl-rlc line driver iPad in dash Dual Irragi 320a alts 8 batcaps 4000's Second Skin sound deadened Link to comment Share on other sites More sharing options...
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