2 SA12s vs 3 E12s

[Bassorback]

So I am looking to upgrade my setup. Im mainly looking for spl. I bought a Sundown Audio 1200D amp recently, this works at 1 ohms. I have been trying to decide what drivers to buy. I have limited trunk space(32"x16"x24). In my budget I can afford either 2 SA12s, run 1200 to them both at 1 ohm as they are 600 rms each, in a ported box tuned to manufacturer Rec. or I could get 3 E12s But my worry is that I would not have enough space to make the box vented. If I could make it vented, what size port area would I need for these 3 tuned at 35 hz? I can't figure it out based on online research and I run a mac, so I can't download programs. Would it be under 6.5 cubic feet or so for all 3 vented?

So my main question is- which would have more spl, 2 vented 12" Sa12s or 3 sealed E12s? Or 3 vented e12s if space allowed?

I'm building my first box for a final project for a class I have, so I have access to table saws, etc about everything I need. Don't think there is a router, so I would have to use a jigsaw to cut out hole.

If this helps:

SA12 D2

Re: 4.57 ohms

Fs: 33.71 Hz

VAS: 21.21 L

Qes: 0.58

Qms: 5.34

Qts: 0.52

Le: 3.40 mH

BL: 21.64 NA

Mms: 280 g

Sens: 83.21

RMS: 600 Watts

E12 D2

RE: 3.8ohm

Fs: 35.8 hz

Qes: 0.56

Qms: 6.79

Qts: 0.52

Le: 1.85mH

Vas: 47.6L

BL: 15.4NA

Cms: 0.13MM/N

Mms: 156.6grams

Sens: n/a 1w/1m

Xmax: 12mm one-way linear

RMS: 400 watts

Thanks for the help yall! Any questions feel free to ask!

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[Full Tilt 10+ year member]

On Sundown's website, the E-12 calls for 1.5-2.0 cubes (ported). So giving them 1.5 cubes, 3 would take up roughly 4.5 cubes (plus port area). You could fit them.

 

[Bassorback]

So how much porting area should I have? thats what I can't figure out. When I put the T/S specs into a port/box builder it says I need 3.8ish ft^3 per box and a large port. then i put in port calculator with 1.5 ft^3 and it says I need like 60 inch deep port. maybe im screwing this up?

Also, would they be all in the same 4.5-5 ft^3 area or would I partition off a 1.5 cubic foot area? Am I making this a lot more difficult than it needs to be? I just wanna make sure I do it well and I'll be working on it for a few weeks so I'm gonna take my time definitely. Thanks for help!

The way i was thinking if i made it with 3 I would make two trapezoidal on the side that angle out towards bumper and a square in the middle. Like this

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^not final draft hahaa

 

[KyleBechtold 5,000+ posts]

you have 7 cubes to work with max minus displacements and its about 6 so play around with tuning/box size for each in winsd