Transmission line box completed(pics)

[Shyne151 10+ year member]

Well 4hours later, and after a night of letting hte liquid nails dry my box is completed. Definitly alot louder than the sealed box I had my cm3's in before....

http://images.project04.net/gallery/box - gallery to the pics

tomorrow I am going to carpet it.

Click to read more...

 

[Acidburn 5,000+ posts]

is that a TL or a ported with just a really long port?

 

[Shyne151 10+ year member]

is that a TL or a ported with just a really long port?

TL=transmission line? if so then that is what it is.

 

[Acidburn 5,000+ posts]

alrighty, wasn't sure, looks good though

 

[Shyne151 10+ year member]

it sounds really good, for being the first box I've built.

 

[Gauntlet 5,000+ posts]

Looks good.

Don't carpet it.

 

[Shyne151 10+ year member]

Looks good.
Don't carpet it.

Please elaborate //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[adam002 10+ year member]

what is TL=transmission line?

 

[Strecker25 10+ year member]

personally id like to know exactly how a tranmission line differes from a normal slot vented enclosure, i think its time to know since ive now built 2 of the "TL" enclosures. lol

 

[Benny212 10+ year member]

personally id like to know exactly how a tranmission line differes from a normal slot vented enclosure, i think its time to know since ive now built 2 of the "TL" enclosures. lol

from "www.diysubwoofers.org"

"The transmission line system is a waveguide system in which the guide reverses the phase of the driver's rear output, thereby reinforcing the frequencies near the driver's Fs. Transmission lines tend to be larger than the other systems, due to the size and length of the line required by the design. The payoff is an extended low end response and a characteristic sound that's appealing to many"

"A ported enclosure system consists of a driver mounted on one side of a box that has an open tunnel or port which allows the passage of air in and out of the box. At low frequencies, the vent contributes substantially to the output of the system.

The ported enclosure system is characterised by lower distortion and higher power handling in the system's operating range, and lower cutoff frequency than a sealed enclosure system using the same driver. Distortion rapidly increases below the cutoff frequency however as the driver becomes unloaded, and the transient response of a ported enclosure system is usually inferior to that of a sealed enclosure system using the same driver. However, the lower cutoff frequency and better power handling within the system's passband often makes ported systems the alignment of choice for many speaker builders.

Ported enclosure systems are much more sensitive to misaligned parameters than sealed enclosure systems, which makes their construction more difficult for the beginning DIYer. I advise that you don't attempt to build these systems, unless you're certain that the T/S parameters for the driver that you want to use are correct. "

there ya go, hope that answered your question, follow the links on that page if you have any more questions or would like to learn about TL enclosures

 

[Jesse98 10+ year member]

where did you get the demensions for that box, I got my TL cut sheet from Diamond and the internals look different.

my boxes ^ I have two of them

 

[Jesse98 10+ year member]

That doesn't look like a TL enclosure ... TL enclosures use a tapered port ...
Do you have the .pdf file ?

the other guy did in the other thread about this, I dont I only have a paper copy faxed from Diamond, the are different though you can look at the pics and see, mine is supposed to be a TL, his looks more like a vented, but I know that the vented cut sheet is totaly differ so im really confused, Diamond usually ends of being differ from everyone so Im just going by what the tell me, sounds great so whatever mine is Im extremly happy, Its almost same as the Hooker Audio Prefabed TL boxes, and they say thiers are TLs.

 

[`pr0digy 10+ year member]

I'm seeing some nice boxes, but not TL boxes... Am I missing something here ?

 

[helotaxi 5,000+ posts]

Not missing a thing. They are not TL boxes, just basic slot ported that have a really long port because of the small box volume and the relatively large port area.

 

[JimJ 5,000+ posts]

yeah, that's what I thought...

like my box, for example...only 1.5 CF volume, but the port looks like a maze to drop the tuning so low to 26 Hz.