Enclosure for 2x p2d2-12

[masterkiwi]

Hi guys,

I'm doing an enclosure rebuild because the last one was not correct.

Now i managed to find all Thiele Small specs but winISD is giving me some weird stuff..

I want to play vented 33Hz, anyone knows where to start?

[Joe X]

Here are the parameters:

http://www.rockfordfosgate.com/products/details/p2d2-12

Also you use the manufacturer's suggestion as a reference not what the program suggests (as it is not made for car audio), to give you an idea of a sample spec for those subs:

4 cubic feet net total, 50 square inches of port area, ~23 inhes port length for a 33Hz tuning, speaker displacement is 1.61 liter per driver.

[masterkiwi]

Hi Joe, thanks for your reply!

I found a post you made for another guy some time ago:
http://www.stevemeadedesigns.com/board/topic/187842-sub-advice-maybe-enclosure-design/?p=2813068

Should i do exactly that 2 times?

only problem is i have limited room in my trunk, about 86cm width and 50cm height, that's where the woofers and port should be, depth (from backseat to trunk) can be towards 1 meter i think..

[masterkiwi]

I'm going nuts..

I found this:

51 liters excl woofer

150cm2 port surface

58cm port length

[masterkiwi]

Alright, hoping someone could help me, is this OK for my subs? (Box is for one sub)

51.6Liters ( sub is 1.6)

Port surface: 130cm2

Port length: 43.5cm

Port type: blockport

Is this OK for ~33Hz?

[Joe X]

What vehicle is it?

[masterkiwi]

A Mazda 323F SE from 1998..

https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-xft1/v/t1.0-9/10557408_669586579785983_2155351498660887725_n.jpg?oh=238bd10e74d5169c3b27fc9a48210397&oe=55E1B8E8&__gda__=1440648546_e95b19db0f617b559e1668b2e1fbc9ed

[Joe X]

So here is a suggestion for you, can use as reference or build, wood thickness is 18 mm, power: to subs rated, amp subsonic filter to 28Hz, minimum port clearance 9 cm, figure is just an assembly guide:

NOTE: If building outside you need to build a cardboard dummy box to test fit in it's way inside.

[masterkiwi]

Wow dude, thats exactly what i was looking for!!! I wish i knew how you did the calculations..

Thanks for the work and thanks for the extra tip, will build it inside as i know it won't fit haha

[Joe X]

You're welcome, consider getting the box in from the backseats, it may be possible, try to build the cardboard box and see what works, I can further modify the above so that you can build outside if you want.