Thumpper

some of that glossy surfaced MDF does not like to bend , it can drive a guy NUTS untill you figure it out....LOL

if you guys were closer to me we could have it at my sisters club The Liquid Zoo Show lounge in Kelowna BC.......

Happy B Day

correct , I was away for almost 5 years , just got everything back into full swing

don't take everything on here personal , you will give yourself an ulcer

I remember what my four 15" did to my Ford Windstar , looks like your vehicle is on it's way to the same place....LOL

I played call of duty on my sons Xbox one for about 20 minutes had at least 2 hours of that motion sickness wanna upchuck had to go lay down feeling ..........LOL

CCA is garbage

you can't loose with the Icon 12's ......... they have excellent SQ and low end

I tune my personal enclosures low , my current sub is tuned at 26hz can't stand peaky bass ... I can not even listen to a sub tuned any higher than 35hz for more than burp

when you held your hand over the cooling vent hole and it started making that weird noise the first thing that came to my mind was the dust cap was coming unglued somewhere letting air out from the preasure build up......it will make a clicking or clacking noise I would double check all the glued seems have only seen 2 woofers in my lifetime with a crooked cone job , it is possible but highly unlikely though , they no doubt use centering tools did that woofer make that noise from new ????

strange.... the only other things I can think of ...maybe you bottomed the sub out and damaged the bottom of the former over exertion can damage it too or the cone assembly is glued in crooked and making contact the pole piece I wish I could have a look at it....to bad it's only a 2,000 mile trip...LOL

if the dust cap comes loose plugging the cooling vent hole it will flap make a clicking or clacking noise free air the sub again and plug the hole...watch the dustcap

check all the way around the dustcap and see if the glue come loose somewhere....

this wasn't making sense to me anymore so I re read the first post I kind of read it wrong , I was thinking outside the box instead of inside...LOL I have mounted vented subs close to the rear wall with out problems it almost sounds like the aluminum former is tapping the pole piece or the magnet assembly

on a ghost hunt...... try turning the x-over down a few hz and see if it makes a difference