regular ported or 4th order?

[91caprice 10+ year member]

well ive been looking around and ive read some good things about 4th orders. well im debating of building one(if posssible) with the setup i have and vehicle.

i have an 87 s10 blazer 2dr with no back seat(removed when i had a wall) and i have a pair of Addictive Audio V1 12s and matching 50.1 amp. i was originally going to do a subs up/port back setup and call it a day. but after looking at 4th orders,id really like to build one.i know they require alot more room than a ported and some knowledge. so id need some one to design me one(id be willing to pay). but id like to know if itll be a good idea to run one.

as for dimensions i have 38"w max. height id say around 15" and deep isnt much of an issue,i have from behind the seats to the tailgate to work with(around 38"). ive been trying to get the t/s specs,but their website is down for repairs. last i checked they needed about 1cuft sealed and 2.5cuft ported(optimum) for each.i know that probably wont help much but ill try and get the full specs.

anyone think i can pull of a 4th order in that space,and anyone willing to get me a full design(cut sheet)?

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[Supergumby5000 5,000+ posts]

first off, a ported enclosure is a form of a 4th order enclosure

secondly, im guessing you are talking about a 4th order bandpass enclosure

thirdly, this well depend completely on the parameters of the driver, and if a bandpass style enclosure is practical for it

 

[91caprice 10+ year member]

Yeah I shouldve specified a 4th order bandpass. My bad. But I'm trying to get the parameters of the drivers. Just not having any luck. I think there's a member on here that deals with Addictive Audio, I'll see if I can find him.

 

[91caprice 10+ year member]

well i finally got the parameters directly from Bryan(owner of AA)

heres what they are

aa12v1

OD = 12.519"

ID = 11.181"

MD = 5.905"

Displacement:

0.146 cu.ft.

-Mechanical Parameters-parallel

FS 33.22Hz

Qms 4.173

Vas 50.22liters

Cms 0.135mm/N

Mms 171.1g

Rms 8.505kg/s

Xmax 12.0mm

P-dia 255mm

Sd 0.0511sq.m

P-Vd 0.613liters

-Electrical Parameters-

Qes 0.674

Re 1.6ohms

Le 1.17mH

Z 2.0 ohms

Bl 9.168Tm

-Electromech. Parameters-

Qts 0.581

no 0.263%

1-W SPL 87.10db

2.83-V SPL 93.64db

Efficiency Bandwith Product 43hz

Sealed 1.5cuft

ported 2.37cuft (Fb 36.82hz, F3 32.77hz)

square por 14sqin X 10"d

round port 4"dia X 8.75"d