What’s the tuning??

[Darth_Immitis]

Im so confused.

It won’t work unless it’s dual chamber like I’m trying to tell them but he dead set on telling me there’s only two ports so **** it idc, good luck to him figuring it out...

 

[Popwarhomie 5,000+ posts]

It won’t work unless it’s dual chamber like I’m trying to tell them but he dead set on telling me there’s only two ports so **** it idc, good luck to him figuring it out...

I thought it was a series tuned 6th order at first.

 

[shredder2]

Sure looks like one to me... all 3 ports look to be the same length (44.25")... it's beyond my time and energy to try figuring it out...
The Subwoofer DIY Page - Dual-chamber ported systems

one guy says it's easy... lol... easy for him maybe...

I quote...

It's not that hard. Just model a woofer for two ports. Let's say it comes out to be a 1 cu. ft. box.

1/3 of 1 cu. ft. will be the lower chamber, 2/3 of 1 cu. ft. will be the upper chamber.

So .33 cu. ft and .66 cu. ft. will be the two chambers and added up will be 1 cu. ft.

The trick is istead of two ports you'll have three.

All the same as in length as you modelled in a software program for two ports.

Two of the ports will be visible externally the third port connects the two chambers internally

I got this now... lol... it's gonna take some doin' but I might be able to come up with something other than a WAG... When I get back to the computer later I might give it a shot just to see if it works like i think it will... wow... interesting

 

[Darth_Immitis]

Does anybody agree with what I’m saying or am I batshit crazy in seeing a small second chamber between red/blue ports in pic I edited?

 

[shredder2]

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[BOOMINGRANDPA 5,000+ posts]

Green, blue, red are ports. Yellow is chambers. Someone correct me if I’m wrong.
https://imgur.com/a/nu2VO

The reason ide call the small yellow section a chamber is cuz it doesn’t keep uniform dimensions like the rest of the red port.

port has to exit the box.. that why idk how it works cause of where the 2 ends are beside each other on the left side of where u circled in blue..

 

[Popwarhomie 5,000+ posts]

port has to exit the box..

No it doesn't.

 

[BOOMINGRANDPA 5,000+ posts]

No it doesn't.

huh? then he maybe right.. just looks like 2 diff port tune that run right into each other.. it's odd design wonder how that sounds..

 

[Popwarhomie 5,000+ posts]

huh? then he maybe right.. just looks like 2 diff port tune that run right into each other.. it's odd design wonder how that sounds..

Look at 8th orders or a quasi 6th order.

 

[oxsign 5,000+ posts]

It won’t work unless it’s dual chamber like I’m trying to tell them but he dead set on telling me there’s only two ports so **** it idc, good luck to him figuring it out...

I'm sorry, i'm not "dead" on it being 2 different ports. That's just what I remember it being. It was over 6yrs ago when it was done, thus the reason i'm asking for help. I didn't mean for it to come off any other way. Looking it at it now, I do see the variance in that "open area" in the center of what I thought to be 1 long port.

 

[Popwarhomie 5,000+ posts]

Don't remember who designed and built it?

 

[shredder2]

Whatever it is... it's got 3 approxametly 44" ports... 2 external, 1 internal with a large chamber and smaller chamber connected by the internal port... combine the chanber volumes and use 1 port area/length to possibly find the tuning. IDK... might work out... I haven't had time to sit down and drive myself nuts with this yet... lol

 

[Darth_Immitis]

I'm sorry, i'm not "dead" on it being 2 different ports. That's just what I remember it being. It was over 6yrs ago when it was done, thus the reason i'm asking for help. I didn't mean for it to come off any other way. Looking it at it now, I do see the variance in that "open area" in the center of what I thought to be 1 long port.

If I sounded like a **** I apologize. I had both kids screaming in my ear and I just flipped lol didn’t mean to take it out on you.

 

[THATpurpleKUSH 5,000+ posts]

Don't remember who designed and built it?

This.

I always write the size and tune somewhere on the inside of the box with a sharpie.

 

[Darth_Immitis]

This.
I always write the size and tune somewhere on the inside of the box with a sharpie.

Same here, great minds think alike! I also put the date cuz I’m a weirdo lol