metalhead needs a ported box design for a 12" Pioneer TS-W3003D4

[LosIsATool 5,000+ posts]

He needed to not listen to you all. On your own now. I’m done wasting my time.

 

[2RZ-FE 10+ year member]

Torres has a woofer displacement box so I put .095 in there. Bracing and 45’s are empty since I removed them. 2 ports, 3 diameter x 15.5” long each. 14h x 22w x 14.5. I got 1.69 net, 34.84 tuning

 

[2RZ-FE 10+ year member]

How are you guys getting such a high volume?
I was the one that said 22x14x14 with 2 3x 15.5 ports and dowel bracing. I use the calcs on the12v and came up with about 1.6cf at 36.65hz.

OP added the 45s in all 4 corners and didn't make the box bigger to account for the space they take up. That's an extra .11cf of space, which drops the volume to 1.48389cf tuned to 38hz.

You said 14.5 deep not 14 if my ports are flush with outside of box, they are so that’s the depth I used

 

[THATpurpleKUSH 5,000+ posts]

When you calculate the displacement of the ports, subtract the thickness of the wood from their length overall length. Also make sure to include the thickness of the port walls in that same calculation.

Volume of the cylindrical port tube using sch 40 pvc is ((3.25/2)^2 x pi) x 14.75 /1728 = .07081cf per port.

 

[2RZ-FE 10+ year member]

He needed to not listen to you all. On your own now. I’m done wasting my time.

You are posting a smiley may as well leave. Everyone else is trying to help and I appreciate it

 

[THATpurpleKUSH 5,000+ posts]

You said 14.5 deep not 14 if my ports are flush with outside of box, they are so that’s the depth I used

ok nvm I get 1.69 lol

So after the 45s it comes to 1.558 tuned to 37.17hz. Not too far from the original target and not enough to seriously affect output so root of the problem lies elsewhere.

 

[2RZ-FE 10+ year member]

When you calculate the displacement of the ports, subtract the thickness of the wood from their length overall length. Also make sure to include the thickness of the port walls in that same calculation.

Volume of the cylindrical port tube using sch 40 pvc is ((3.25/2)^2 x pi) x 14.75 /1728 = .07081cf per port.

I did not calculate anything on my own I just filled in the boxes on Torres.

14 x 22 x 14.5 h/w/d

.095 woofer displacement

2 ports, 3 diameter, 15.5 length

thickness of wood .75 was already filled in

No bracing and no 45’s since I removed them

 

[LosIsATool 5,000+ posts]

You are posting a smiley may as well leave. Everyone else is trying to help and I appreciate it

I actually did. But all the experts refuted it. Then I tried to post real world test which I imagine you ignored.

 

[THATpurpleKUSH 5,000+ posts]

I did not calculate anything on my own I just filled in the boxes on Torres.
14 x 22 x 14.5 h/w/d

.095 woofer displacement

2 ports, 3 diameter, 15.5 length

thickness of wood .75 was already filled in

No bracing and no 45’s since I removed them

With no bracing and no 45s I come up with 1.69 at 35.68hz.

Is the box 100% airtight? (other than the ports obviously)

 

[2RZ-FE 10+ year member]

ok nvm I get 1.69 lol
So after the 45s it comes to 1.558 tuned to 37.17hz. Not too far from the original target and not enough to seriously affect output so root of the problem lies elsewhere.

Yeah so I removed the bracing don’t see the need for such a small box. To get to 1.5 I will change the width. Probably need to make it around 1.5 inches less wide inside not At home to check and I’m sure I need to cut the ports shorter

 

[BOOMINGRANDPA 5,000+ posts]

ok i get 1.65 cfad.. u don't need to go any smaller thats fine for that sub.. smaller boxes are normally for when using more power., u diff don't need to go smaller.. maybe side port just not working let make this easy, just copy this box man i promise it is good for that sub, u could make box tad bigger and round the corners but it's same cf as yours just slot port on front.. https://www.ebay.com/itm/12-SINGLE-1-75-Cu-Ft-PORTED-L-VENTED-3-4-MDF-GREY-SUBWOOFER-SUB-ENCLOSURE-BOX/272338976297?hash=item3f68aafe29:g:~i8AAOSw-zxWn1j7&vxp=mtr

 

[2RZ-FE 10+ year member]

With no bracing and no 45s I come up with 1.69 at 35.68hz.
Is the box 100% airtight? (other than the ports obviously)

Yes it airtight

 

[2RZ-FE 10+ year member]

I can make a slot port on my current box Just let me know how wide to make the port opening and the lengths of the L piece

 

[BOOMINGRANDPA 5,000+ posts]

I can make a slot port on my current box Just let me know how wide to make the port opening and the lengths of the L piece

no it won't be big quite enough airspace after the extra wood., it would be about 1.3cf ad

 

[Jeffdachef 5,000+ posts]

How are you guys getting such a high volume?
I was the one that said 22x14x14 with 2 3x 15.5 ports and dowel bracing. I use the calcs on the12v and came up with about 1.6cf at 36.65hz.

OP added the 45s in all 4 corners and didn't make the box bigger to account for the space they take up. That's an extra .11cf of space, which drops the volume to 1.48389cf tuned to 38hz.

12 volt box calc does not account for port displacement so its completely wrong.