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slowpat
11-21-2011, 12:31 PM
Second question on a pair of 250Ti LE's that picked up, which are missing the ports in the back. Does anyone know what the port tube length is? If the internal volume is similar to the 240Ti, I can just measure mine. The tech sheet only shows the part number. Thanks!
JBL_620
11-21-2011, 12:51 PM
Second question on a pair of 250Ti LE's that picked up, which are missing the ports in the back. Does anyone know what the port tube length is? If the internal volume is similar to the 240Ti, I can just measure mine. The tech sheet only shows the part number. Thanks!

I just measured the port on mine 250Ti LE: 5" long and 4" in dia.
slowpat
11-21-2011, 02:48 PM
I just measured the port on mine 250Ti LE: 5" long and 4" in dia.

Great! thanks for getting the measurement...
topr
11-21-2011, 02:50 PM
On my 250 ti classic edition the port has a smaller dia inside the speaker. It's only 3,8" in dia and the other side of the port is 4" in dia. and yes it's 5" long.

/Torbjörn
JBL_620
11-21-2011, 03:24 PM
On my 250 ti classic edition the port has a smaller dia inside the speaker. It's only 3,8" in dia and the other side of the port is 4" in dia. and yes it's 5" long.

/Torbjörn

I measured 3.9" on the inner end. I think this is to make it easier to insert the tube. just my two cents.
cosmos
11-21-2011, 08:50 PM
On my 250Ti-LE I played with a lower tuning frequency (longer ports) and liked the change.. You might give it a try..
opimax
11-22-2011, 06:12 AM
what length did you end up?

Mark
DavidF
11-22-2011, 08:26 AM
Second question on a pair of 250Ti LE's that picked up, which are missing the ports in the back. Does anyone know what the port tube length is? If the internal volume is similar to the 240Ti, I can just measure mine. The tech sheet only shows the part number. Thanks!

The volumes are mentioned elsewhere, just have to work through some searches. Strictly from memory the 250Ti is 4.2 cf and the 240Ti is 3.4 but you may want to check my numbers.
4313B
11-22-2011, 09:20 AM
And they both use the same ducted port, hence the 240Ti system is tuned a bit higher.
slowpat
12-04-2011, 01:16 AM
And they both use the same ducted port, hence the 240Ti system is tuned a bit higher.

Makes sense. Thanks! Seems like the port tube in my L100T3's have the same dimension. But I will just cannibalize the port tube from the Harman Kardon Citation subwoofer box which uses the LE14H-1.