jcnash71 Posted August 5, 2013 Report Posted August 5, 2013 Whenever i play lower notes such as the low one in put on or rack city etc, i hear what sounds like the sub making a thud sound? It doesnt sound like bottoming out or port noise but im not sure if its something to worry about..any ideas? It's a sa single 12 ported 33 hz ss on 32ish i believe?
pioneerforlife Posted August 5, 2013 Report Posted August 5, 2013 it could be bottoming out. but also the low notes are what cause lot of flex so you could be flexing or rattling something in your car. also do you have your box secured in some way because sometimes the flex of a sub can actually make a box jump or hop around. you could have also torn a spider. I would take the sub out of the box and see if it makes the sound out of the box. if not, you can narrow it down from there. but don't give it too much power out of the box because you can damage the sub that way. 2007 Ford Focus SES Hatchback Pioneer HU 4 Digital Designs 9515i's in a B pillar. 2 Soundstream XXX 15K's (running at 16 volts) Soundstream Mids/Highs in custom door panels (getting rebuilt soon) Soundstream TA2.160 and TA2.400 Sky High and KNU wiring 3 Banks of Maxwell caps Winston Lithium (not a fan) Bump4Life 250 Amp Alt. aka USAlternators Soundstream Focus and Avenger Build Log Instagram @p4linnovation YouTube: Team Blowin Loud
SnowDrifter Posted August 5, 2013 Report Posted August 5, 2013 Could also be clippingTake a peak and see how much the sub is moving Box specs? ~~~~~~~~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
jcnash71 Posted August 7, 2013 Author Report Posted August 7, 2013 Well if anything they are broken in by now, and nothing is torn. Box is secured with L brackets to the frame so its not moving but when it does play lower notes the actual box flexes bad..maybe just a bad designed box? Also it's 33 hz @ 1.8 -2 cube i think
bighossf150 Posted August 7, 2013 Report Posted August 7, 2013 box flex is no good, get that thing braced up. I used threaded rod in all my boxes Used to have a loud truck 2009 Corvette Z06, H/C/I, 150 shot, g force tune, 730rwhp/690rwtq 2013 F-150 limited, MPT Tune, leveled on 35"s
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