Transmission Line Enclosure for Boomintahoe

[DNick454 10+ year member]

This is a design that I've been working on for boomintahoe. Figured I'd post some pictures and get your opinons. It still needs a little work to integrate the plate amp into it. I'll have to make a separate chamber on the back for it.

Anyways, this enclosure is for a single 8" Dayton subwoofer. It will be used in a home theater setup. This enclosure is a transmission-line style enclosure and has a line length of 11.5' (yes, that's feet, not inches) and is tuned to 25Hz //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

Laying down some guidelines... this gets tedius:crap:

 

 

Port line walls mapped out... all 11.5 feet of it:crazy: Pain in the *** measuring out all of those ****ed 45 degree braces...

 

 

Walls put up

 

 

Hole for sub.

Just realized though that the dayton 8" driver has a big *** magnet assembly and has a 4.5" mounting depth. Looks like I'll have to figure out something with the baffle or the sub will have to be ran inverted because the port is only 2" wide.

Click to read more...

 

[Pioneer~Saturn 5,000+ posts]

Nice //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[DNick454 10+ year member]

Alright, so I came up with the idea to just use an extra ring, kinda like you would in a door speaker to gain some depth. I made it that shape just it wouldn't look gay as just a ring. I think it looks somewhat interesting //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

A little added graphics to give it that fit'n'finished look. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

Still needs a bit of work to incorporate the plate amp. It's not a done deal yet, but let me know what you guys think.

 

[Pioneer~Saturn 5,000+ posts]

I was thinking about something almost identical to that to space it, lol

 

[req 5,000+ posts]

that is a whole hell of a lot of work for a little dayton 8" sub. jeez.

 

[DNick454 10+ year member]

that is a whole hell of a lot of work for a little dayton 8" sub. jeez.

Yeah, don't get me started on drawing each individual 45 brace and rounding each port end piece. It got tedious but it should sound great in a H/T setup and have a good response off very little power.

 

[Boomin_tahoe 5,000+ posts]

Wow. That's gonna be an interesting build. Good thing I'm almost done cleaning out my garage to free up space for projects like this! Oh so I can park my SUV in it too.

 

[DNick454 10+ year member]

Yeah, nice thing is though, all the port pieces are the same length and are identical. All you've gotta do is set the length on your fence and table saw and just make multiple passes. The same ease can't be said for rounding over everything and actually constructing it... but oh well, it'll sound nice //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Boomin_tahoe 5,000+ posts]

After you redo the area for the plate amp, I did some calculations for the mounting depth of the sub and that little baffle is nice but still needs a little more...the back of the magnet will still hit the "port wall". Anyway, I'll let ya reconfigure...lookin' good tho. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[DNick454 10+ year member]

Hmm, might just need to make that baffle a tad thicker then. Or add another trim ring ontop of it. I'll think of something that looks somewhat nice //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[tyler_fitz 10+ year member]

lol

what, you're not gonna kerf it and make it all rounded and cool lookin?

 

[DNick454 10+ year member]

Neva!

 

[ciaonzo 5,000+ posts]

Keep in mind that the windows are not very large on that driver and airflow will be restricted due to the thick baffle if provisions aren't made.

 

[tyler_fitz 10+ year member]

i think if you made the box shorter, the port would have to be wider, which would give you some more clearance for the sub to be mounted without the lil spacer thing.

 

[DNick454 10+ year member]

i think if you made the box shorter, the port would have to be wider, which would give you some more clearance for the sub to be mounted without the lil spacer thing.

True, but then the box would be really wide and/or deep. I'll let boomin comment though, it's going in his H/T setup, not mind //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif