Need help; terminal cup in a fiberglass enclosure leaking air, what now?

[philrab]

Get a small square piece of 3/4" mdf and drill a small hole in the middle of it and feed the wire from the back through it and glue it to the box, viola no more air leak.

If the terminal extends past the wood inside the box, just use a hole drill and bore it out till it fits the side of the box with no gaps.

That's where I'm going if nothing else works.

Is the cup removable? I'd remove it and goop the hell out of the back with clear silicone and then reinstall it. Put some silicone around the cup's lip while you're at it so that is for sure sealed too.

No, not really. Looks like the guy that built the enclosure either glassed or epoxy'd it in. It ain't coming out without a hole saw. I'm going to take the above advice and hot glue the SOB. Then, I'll carefully drill holes through the fiberglass, and epoxy a pair of bolts through for terminals.

Thanks for the advice guys. Anyone have any input on polyfill? I'm tempted to stuff it with 1lb/cu ft. (had more in before) and see if I can get some more resonance to the bass without it sounded muffled.

[timc31610]

I say stuff it until you get the sound you are looking for.

[philrab]

I say stuff it until you get the sound you are looking for.

Correct me if I'm wrong, here's what I (think) I know about polyfill.

1. Not stuffing enough/not tightly enough is going to accomplish nothing but eating up airspace, which I can't afford to lose cause I'm already at the manufacturer's recommended minimum for this sub.

2. I had 1.5 lbs/cu ft. weighed out for accuracy. Shit was TIGHT in there, like had to use the sub to compress it so the sub would fit. Didn't seam right, tried it. Sounded muffled.

3. Thinking I'll put 1lbs/cu ft. (0.2 pounds for 0.22 cu ft before displacement) and try that. Either it'll sound okay, or not.

What is everyone's experience with polyfill and the change in sound? This is my first sealed enclosure, first enclosure this small, first time using polyfill so I'm looking for guidance. I know it supposedly changes the TS specs of the sub in the eclosure, but I'm looking for more what the ears say and what it sounds like.

[Ritch40]

the little bit i have used polyfil i always got my best results (to my ears anyway) with a small amount of loose polyfil. It just there to help slow the sound waves inside of the enclosure down a little bit. I kind of tricks the sub into acting like it is in a little bigger enclosure.Or at least thats my understanding of it. And my ears anyway do confirm it to s small degree.

[philrab]

the little bit i have used polyfil i always got my best results (to my ears anyway) with a small amount of loose polyfil. It just there to help slow the sound waves inside of the enclosure down a little bit. I kind of tricks the sub into acting like it is in a little bigger enclosure.Or at least thats my understanding of it. And my ears anyway do confirm it to s small degree.

Probably give that a try. I know that packing it tight as I've seen mentioned doesn't work in my particular application, just sounded muffled due to choking too much airspace.