Look good? 12" BL (2.0 cuft - 35hz_

[mobileaudio219 10+ year member]

Will somebody double check my figures here. It should be around 2.0 cuft tuned to 35hz (L PORT)

14.00" h

14.50" D

35.00" W

Total inside volume BEFORE sub & port displacement = 3.15 cuft

Port dimensions = 3" X 12.5" x 36 (L PORT)

Port volume = 0.95 cuft

Sub displacemnt = 0.15

0.95 + 0.15 = 1.1 cuft.

2.0 + 1.1 cuft = 3.1 (within .05 is close enough)

Thanks fella's.

Click to read more...

 

[thegreatestpenn 5,000+ posts]

you forgot about bracing displacement. also your port is on the small side for an spl woofer. double-baffle is recommended if you're not putting the sub right next to the side wall IMO. And i dunno if the box is deep enough considering how long the port is if the sub isn't all the way against the side wall

 

[schackel 10+ year member]

go to reaudio.com and just design it there!

 

[mobileaudio219 10+ year member]

It'll have an L shaped port, it'll fit in there fine.//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

FI recommends between "12-16 square inches of vent area per cubic foot of volume", 16 x 2 = 32. I should be at 37.5, so that should be good.

You're probably right about the double baffle, probably go ahead and do that. As for bracing, the L port runs along the back wall so there isnt really any big opened unbraced area's... I was think it would be alright?

 

[mobileaudio219 10+ year member]

go to reaudio.com and just design it there!

I heard that caculator isnt very accurate. I used winISD, so I'm pretty sure it should be correct. I just wanted some opinions.

 

[WildSebring 10+ year member]

I heard that caculator isnt very accurate. I used winISD, so I'm pretty sure it should be correct. I just wanted some opinions.

You heard right, that RE calculator sucks.... //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[mobileaudio219 10+ year member]

You heard right, that RE calculator sucks.... //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

What is everyones thought on winISD? Close?

I'm pretty sure my design is right on (or real close), but I'm designing it for somebody else so I want it be perfect (or near perfect.)

I've build a few enclosures now using winISD and all came out really well, so I think think its atleast fairly accurate.