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<blockquote data-quote="Savant" data-source="post: 149676" data-attributes="member: 546108">Normally inverted (yes, pointing into the box) is for looks, or if you think your box might be a bit too small and want the volume back from the woofer (it has a volume it displaces in the box, but not usually much).. I&#039;ve heard that it can help with SQ but at the cost of SPL (cleaner sound, lower volume), but I don&#039;t know first hand.. As for MY sub being inverted, I have a groove/channel (3 actaully) on the cone that goes under the dust cap.. and I dropped something in there and it&#039;s buzzing! so I&#039;m trying to bump it out.. not working all that well //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gifThe ruber gasket on top is pretty common.. that would be what I meant with trim.. if it&#039;s loose it could make noise, but not as likely with the rubber as with mine (hard plastic trim)..EDIT: I used the screws that came with my subs.. Not sure they are long enough to make it through the 3/4&quot; mdf.. If you have to use other screws, try to get &#039;bigger&#039; screws in diameter, and only long enough to fit the tickness of the wood.. Nuts/bolts will work too, and are a LOT harder to strip (but you still can so be careful).. They have some &#039;setting nut&#039; thingys.. you drill a full size hole (like for any bolt) and this thing goes inside and sets into the hole.. has spikes on it to keep it from spinning, that way you don&#039;t have to find a way to hold both sides while you tighten up.. just make sure they are set all the way before you tighten up or you might have loose bolts later and have to re-tighten.. (shouldn&#039;t hurt anything, just a pain)..</blockquote>

[QUOTE="Savant, post: 149676, member: 546108"] Normally inverted (yes, pointing into the box) is for looks, or if you think your box might be a bit too small and want the volume back from the woofer (it has a volume it displaces in the box, but not usually much).. I've heard that it can help with SQ but at the cost of SPL (cleaner sound, lower volume), but I don't know first hand.. As for MY sub being inverted, I have a groove/channel (3 actaully) on the cone that goes under the dust cap.. and I dropped something in there and it's buzzing! so I'm trying to bump it out.. not working all that well [IMG]//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif[/IMG] The ruber gasket on top is pretty common.. that would be what I meant with trim.. if it's loose it could make noise, but not as likely with the rubber as with mine (hard plastic trim).. EDIT: I used the screws that came with my subs.. Not sure they are long enough to make it through the 3/4" mdf.. If you have to use other screws, try to get 'bigger' screws in diameter, and only long enough to fit the tickness of the wood.. Nuts/bolts will work too, and are a LOT harder to strip (but you still can so be careful).. They have some 'setting nut' thingys.. you drill a full size hole (like for any bolt) and this thing goes inside and sets into the hole.. has spikes on it to keep it from spinning, that way you don't have to find a way to hold both sides while you tighten up.. just make sure they are set all the way before you tighten up or you might have loose bolts later and have to re-tighten.. (shouldn't hurt anything, just a pain).. [/QUOTE]

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