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Thread: JL audio 13W3V3-4 in a 4th Order Bandpass: The best of one world Reply to Thread
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  Topic Review (Newest First)
12-06-18 07:12 AM
morca Test... finaly i can acces my account again🤗
04-29-13 07:56 PM
proverbs
Re: JL audio 13W3V3-4 in a 4th Order Bandpass: The best of one world

Yeah , I was commenting on the 3 port design and overall build. It will be cool to see the finished product as well.
04-29-13 05:55 PM
morca
Re: JL audio 13W3V3-4 in a 4th Order Bandpass: The best of one world

Thank,s ,it play,s very well i am looking at stargate now,and the sub is playing
I still have to finish the outsite,it does not look great like this.
The picture,s of the build show indeed how much i did to fit those 3 long vent,s.
It was a nice project to build.
04-29-13 05:45 PM
proverbs Morca ,

That is an awesome looking DIY home subwoofer .
03-16-13 08:47 PM
morca
Re: JL audio 13W3V3-4 in a 4th Order Bandpass: The best of one world

Thanks, nice to hear.

The calculated volume,s, tuning and airvelocity in the vent,s / length of the 3 ports percies fits in this case, I was lucky.
When I started building I saw myself idd ,that it looked pretty well designed.

I would like wood veneer finish redwood, but miss the experience to work with it.
So i,am thinking who I'm asking here to help me whit it ,so that is is done ok the first time.
03-16-13 07:40 PM
fusseli
Re: JL audio 13W3V3-4 in a 4th Order Bandpass: The best of one world

Nice work, it looks great. I like how you did the port tubes. Do you plan on applying any finish to the cabinet?
03-14-13 12:52 PM
morca
Re: JL audio 13W3V3-4 in a 4th Order Bandpass: The best of one world

One,s i was working in a factory that made plastic,s
One of our partners wanted his plastic on this roller ,it was 240 cm long.
I dont know where to buy it,it came from the attic,and that job was 20 years ago.

I think it is PE ,i found some other pipe what is also very good i think.
Butt where to buy this,i,am very sorry cant help you .
I dont know either......

Butt i think it work,s very well ,it is very soft but strong, so it cant give any energy treu from the closed section into the vent,s.
03-14-13 12:16 PM
Dwightlf
Re: JL audio 13W3V3-4 in a 4th Order Bandpass: The best of one world

I was just looking at your build and wanted to find out how you made the port tubes. It looks like two tubes with something anti-resonant between them.
03-10-13 07:20 AM
morca
Re: JL audio 13W3V3-4 in a 4th Order Bandpass: The best of one world

120 liter closed/39 liter vented.
Vents: 82 cm long,7,8 cm intern. Airspeed 11 m/s at 20 hz.
Calculated bandpass 18-78 hz,afther build en inroom measurement 16-72 hz.
The tuning i have to look it up...

It is a movie monster,if say the Podrace play,s ,it make me feel things that are pretty awesome.
Togheter whit 1 closed box this is my system for about 2 years.

And i am still impressed how it play,s.
It was my first vented box,so i got some help calculating.

I have to build another for the living,but have been busy.
Hope to find some time soon.
03-09-13 09:59 PM
Mike P.
Re: JL audio 13W3V3-4 in a 4th Order Bandpass: The best of one world

Looks good. What is the internal volumes and tuning frequency?



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