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Transmission Line box


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customsuburb 
Gold - Posts: 1,813
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Joined: January 17, 2004
Location: United States
Posted: January 23, 2005 at 7:25 PM / IP Logged  

I started building this today https://img.photobucket.com/albums/v521/customsuburb/IMG_0525.jpg

That was taken when I was seeing if it would all fit so everything is just fitted in roughly. I still have to screw it togethor and listen to it so I'll post back later.

A big thanks to Haemphyst, LL Beer J off of the sound domain forum and my dad for helping me build it!

Drewt 
Copper - Posts: 183
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Joined: January 04, 2005
Location: United States
Posted: January 23, 2005 at 7:28 PM / IP Logged  

wow, that's impressive!

haemphyst 
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Joined: January 19, 2003
Location: Michigan, Bouvet Island
Posted: January 23, 2005 at 7:29 PM / IP Logged  
Looks good, man! Hope it sounds good for you as well! TL enclosures can be VERY satisfying, as they are a tremendous amount of work, with generally good results! Glad I could help!
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
customsuburb 
Gold - Posts: 1,813
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Joined: January 17, 2004
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Posted: January 23, 2005 at 7:38 PM / IP Logged  

Sorry. I should have said more in that last post. I'm going to be using an 8 inch JL W0 sub with a tiny Alpine 3523 amp. I read through this a little bit: http://forum.sounddomain.com/forum/ultimatebb.cgi?ubb=get_topic;f=11;t=070826 but it was for making a snail shell (a transmission line with a small amount of a rear loaded horn characteristics).

A big thanks to the people on www.diiyaudio.com also

Here are some other sites on transmission lines and horns.

www.t-linespeakers.org

www.quarter-wave.com

http://melhuish.org/audio/

stevdart 
Platinum - Posts: 5,816
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Joined: January 24, 2004
Location: Pennsylvania, United States
Posted: January 24, 2005 at 12:17 AM / IP Logged  
Let us know the finished result.  You got me wondering about trying that too, now.  I see your project plans in the background of that pic...lots of fun doing a project!
customsuburb 
Gold - Posts: 1,813
Gold spacespace
Joined: January 17, 2004
Location: United States
Posted: January 24, 2005 at 9:14 PM / IP Logged  

Finally got some more pics of it done. I'm not that good at taking pictures so I hope they dont look too bad...

https://img.photobucket.com/albums/v521/customsuburb/IMG_0529.jpg

https://img.photobucket.com/albums/v521/customsuburb/IMG_0530.jpg

https://img.photobucket.com/albums/v521/customsuburb/IMG_0531.jpg (weird shot)

https://img.photobucket.com/albums/v521/customsuburb/IMG_0532.jpg

https://img.photobucket.com/albums/v521/customsuburb/IMG_0534.jpg

So far I've only listened to it with an Onkyo home reciever (getting about 40 to 50 watts continuous) and It sounds great! It's tuned to 40 hz and has a tight and punchy sound but I can make the doors and windows rattle with low bass also. It's hard to believe that only an 8 inch woofer is playing.  Transmission Line box -- posted image. 

I would highly reccomend building one. I did mess up the angle of one of the interior boards. If anyone wants the plans for a transmission line box for a JL W0 8 PM me.

And again a big thank you to LL Beer J and Haemphyst and the people on Diyaudio.com!

haemphyst 
Platinum - Posts: 5,054
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Joined: January 19, 2003
Location: Michigan, Bouvet Island
Posted: January 24, 2005 at 9:29 PM / IP Logged  
Glad to help, and glad you like the results... I TOLD you they sound good! Transmission Line box -- posted image.
Enjoy you new sounds!
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Glowinlow22 
Copper - Posts: 93
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Joined: October 24, 2004
Location: United States
Posted: January 24, 2005 at 9:47 PM / IP Logged  

that looks like a great build up man, i used to know a guy that built those all the time for subs, the last one he made was about the size of a 10 inch sub with supposedly a 15 foot port snaked around inside of it, it was roughly 12 inches by 12 inches by i think 30 inches long with a 3 or 4 inch square port, very very impressive bass using a 10 and a 500 watt amp i wasnt aware a sub could get that low and stay that clean, his were tuned alot lower than 40 hz though i beleive he was getting readings down to 15 hz with decent sound at least, i never heard it play that low :) i've been wanting to build a box like his for along time and never got around to it but i may just have to try it now that i've seen yours :).

J~

Maxst 
Silver - Posts: 866
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Joined: June 06, 2003
Location: United States
Posted: January 24, 2005 at 9:56 PM / IP Logged  

Yo..ill take some plans..

maxst2@gmail.com  please :D

I need quality equipment, feel free to donate.
phuzun 
Member - Posts: 26
Member spacespace
Joined: July 06, 2004
Location: United States
Posted: January 25, 2005 at 8:03 AM / IP Logged  

I've been reading about these as well.  Havent gotten into the equations yet, though I'm still collecting as much data on the sub woofer I have.  Actually I have 2, they are Eclipse 8615 8ohm subwoofers.  15" size, and they are from like 98 or so.  There lower end line.

I've got these ones.  http://www.freewebs.com/eclipse-car/86ts.htm

So if anyone has more info on them.  Other than me contacting Eclipse, which I may do soon.  Please PM me.

I'll probably see what the estimated sizes are, then think about using one or two in the box, or 2 seperate boxes.  As they are right now, they dont play loud at lower waves, mostly a mechanical distortion.  They play stuff from the mid 30's and up really easily.  Though, at lower volumes they play the lowest stuff without any noticable distortion, mechanical or otherwise.

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