Installing adjustable ports inside enclosure

[LZTYBRN]

Well, I finally got around to painting my OS MTM's. I already had the ports installed, so what I did was pull them out about an inch (as far as they could go), and taped them up really well. Well apparently really well isn't well enough. I still got a lot of primer on the ports somehow. Not only that, but it was hard to get the brush under there, so it's not primered very well in that spot.

So what I wanted to do was take the ports out completely, clean the ports, and do another coat of primer (as well as the finish spray) while they're out. I just don't know if it would be possible to get the ports back in, because of the second piece that makes it adjustable. I obviously couldn't fit a glue gun or anything in there. I was thinking maybe just some duct tape? Any ideas?

[DIYNut42]

Remove the woofer so you can get your hand inside the cabinet, and remove the adjustable part of the port. Then put the port together outside the cab and measure it to six inches. Don't glue it together yet. Just slide it over to get the right length.

Put enough tape on the part of the port that the adjustable piece fits over so that when you slip the adjustable piece over it, it will stop it where it needs to be. Not so much tape that the port wont slip through the hole on the back baffle though. Just enough that you can feel when it stops.

This next step will have to be done kind of quick, so have everything ready to go for each port. When you're ready to glue the port up for good and install it, put some pipe glue on smaller port piece. Then put the larger piece back in the cabinet and hold it with one hand, while sliding the smaller piece through the hole and into it with the other. When you feel it hit the tape, stop and hold it there for a few seconds. Then push the port into the back and screw it down!

Oh and don't forget that per Paul's instructions, the ports length needs to include the back baffle thickness. Just set your measuring tool on the flange and adjust the port to six inches.

[LZTYBRN]

Remove the woofer so you can get your hand inside the cabinet, and remove the adjustable part of the port. Then put the port together outside the cab and measure it to six inches. Don't glue it together yet. Just slide it over to get the right length.

Put enough tape on the part of the port that the adjustable piece fits over so that when you slip the adjustable piece over it, it will stop it where it needs to be. Not so much tape that the port wont slip through the hole on the back baffle though. Just enough that you can feel when it stops.

This next step will have to be done kind of quick, so have everything ready to go for each port. When you're ready to glue the port up for good and install it, put some pipe glue on smaller port piece. Then put the larger piece back in the cabinet and hold it with one hand, while sliding the smaller piece through the hole and into it with the other. When you feel it hit the tape, stop and hold it there for a few seconds. Then push the port into the back and screw it down!

Oh and don't forget that per Paul's instructions, the ports length needs to include the back baffle thickness. Just set your measuring tool on the flange and adjust the port to six inches.

Awesome! Didn't even think of that. Thank you very much.

Any idea what kind of pipe glue would be good? I see glues that are for PVC and ABS, but the page for the ports doesn't say which it is. Is there one I can use for any plastic?

[DIYNut42]

Those ports are ABS plastic, so normal PVC-ABS glue will work great. Next time you're at wal-mart or where ever you go to shop, you can find some fairly cheap. Glad I could help.