Open end position in a TL - diyAudio
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Old 12th May 2004, 03:38 PM   #1
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Default Open end position in a TL

Sorry about the question, I'm quite convinced that someone already discussed that topic ... but I'm unable to find it anymore.
So, my question is: how about having the open end near the driver in a TL ?
How bad is it ? Is it bad, unimportant, good (under some conditions) ?
Thanks
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Old 12th May 2004, 06:04 PM   #2
joensd is offline joensd  Germany
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Quote:
Sorry about the question, I'm quite convinced that someone already discussed that topic ... but I'm unable to find it anymore.
So, my question is: how about having the open end near the driver in a TL ?
How bad is it ? Is it bad, unimportant, good (under some conditions) ?
Thanks
Per definition the line lenght after your suggestion would be near to nothing so defeats the object of having a TL in the first place.
Have a look at Martin King´s page for extensive insight.
Here for example you see the graph and the definitions of the line lenght.

Regards
Jens
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Old 12th May 2004, 11:56 PM   #3
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Default Oh,

there are so many ways to bend a tube !
http://www.audiofanatic.it/Diffusori/throne/throne_1.html
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Old 13th May 2004, 12:28 AM   #4
GM is offline GM  United States
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As long as the line is well damped and tuned fairly low (< ~80Hz), then the vent's location is a matter of convenience unless you choose to further load it by placing it near a boundary.

GM
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Old 13th May 2004, 12:33 AM   #5
Ap is offline Ap
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My TL Subs, have the driver in the front at the top of the enclosure, the line runs to the back then down, single turn at the bottom, up the front & exits right below the driver.
Driver/exit placement was chosen so the subs could go against the wall. No problems what so ever.
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