X-LS Encore Port size for 38.8hz

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Folsom

X-LS Encore Port size for 38.8hz
« on: 12 Sep 2017, 02:51 am »
Hey, was hoping someone could tell me what that would be.

I can't run the sim in winISD atm till I get my current version of Linux working with Wine.

(I don't need any advice or thoughts on the subject of tuning, just the port size)

mcgsxr

Re: X-LS Encore Port size for 38.8hz
« Reply #1 on: 12 Sep 2017, 04:46 pm »
Not sure what port size you're working with.  Or what minimum port diameter Danny recommends.  I recall this kit works in a 0.5 cubic foot box.

For a 1 inch port the length would be 2.5 inches.  That may prove to be too small in diameter.

For a 1.5 inch port, the length would be 7.5 inches.

Danny Richie

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Re: X-LS Encore Port size for 38.8hz
« Reply #2 on: 12 Sep 2017, 04:47 pm »
Hey, was hoping someone could tell me what that would be.

I can't run the sim in winISD atm till I get my current version of Linux working with Wine.

(I don't need any advice or thoughts on the subject of tuning, just the port size)

That is a bit of a loaded question as it requires a box volume to answer.

To tune that woofer to 38.8Hz then you need 1.13 cubic feet of air space and a port that is 2" in diameter and 2.98" long. So basically a 3" long port.

However how you damp the box can alter all of that either way as well.

Oh yeah, and the -3db will be 44Hz with that tuning.

Folsom

Re: X-LS Encore Port size for 38.8hz
« Reply #3 on: 12 Sep 2017, 05:42 pm »
In this case it is one of Ruebens flatpacks. I guess I should have mentioned that.  :roll:


Danny Richie

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Re: X-LS Encore Port size for 38.8hz
« Reply #4 on: 12 Sep 2017, 06:00 pm »
In this case it is one of Ruebens flatpacks. I guess I should have mentioned that.  :roll:

If using the .5 cubic foot box tuning it that low it will knock 1db of output away at 100Hz and hit a -3db of 63Hz. And a 2" port would be 9.25" long. So that will also reduce the air space a bit too.

Folsom

Re: X-LS Encore Port size for 38.8hz
« Reply #5 on: 13 Sep 2017, 01:22 am »
Thanks Danny.

Skiman

Re: X-LS Encore Port size for 38.8hz
« Reply #6 on: 14 Sep 2017, 07:45 pm »
You must have had those flat packs from Ruben for quite some time. :lol:


Folsom

Re: X-LS Encore Port size for 38.8hz
« Reply #7 on: 14 Sep 2017, 08:17 pm »
The speakers are already built. I use them often for experimentation.