box for 4 SA-8's

[Curtis96olds 1]

ok i have a 2002 dodge dakota extended cab, and i was thinking of putting 4 SA-8's in the back area after taking out the back seat. i will get the D4 coil configuration and run 2 off a dsc1000.1 and the other 2 off another dsc1000.1 (each sub will get 500watts) now i have no clue how to design a box, the only other ported box i made someone else designed for me and i built it. i dunno max dimensions of the box but if you tell me how many cubes it has to be i can figure out how to make that size box fit where it needs to, also for the "easy" factor id like to use aero ports instead of a slot port design, so what size and lengh aeros would i need? and where can i buy those? id like it to be tuned to around 35hz. thanks guys!

Edited May 27, 2010 by curt96olds

[Don Ganso 13]

So you are going to strap the two MB Quart amps?

Either way, sundown audio recommends something between .6 and 1.0 cuft per sub for the SA-8s, so if you can figure out how you want to do that, go for it!

Here is a good site to calculate necessary port area/length:

port stuff

Here is an aero port calculation:

aero port calculation stuff

[mccleery3 166]

I'm running 4-SA8 D2's in a 5cu net enclosure with 3-4" psp aeroports tuned to 33hz powered by a Sundown SAZ-1500D @1ohm. In my particular vehicle (Ford Escape) it fills the cabin well and suprises any and everyone that listens to it. It isn't until they see that it REALLY is just 8's that they get even more impressed with the sounds.

[Curtis96olds 1]

ok guys, i came up with a box myself, i just want to confirm with you guys if this sounds right

box will be 3.2 cubes with 2 4" aero ports with a length of 14.35 inches each. the calc you linked me says that will tune it to 35hz. that sound about right to you guys?

and on a side note are you still able to order these in the SSA store, i know it lists them but are they still being made?

Edited May 30, 2010 by curt96olds

[Don Ganso 13]

I think that you would want more port area than that, I'd use at least 3 4" aeros. You would have to recalculate your design a bit to account for the extra port displacement if you wanted to keep the tuning at 35Hz. Each of the ports would have to be about 23" long. You could still use even more port area, cause the SA-8s have a usable throw of 25mm and they use it all.

Edited May 30, 2010 by Don Ganso

[Curtis96olds 1]

I think that you would want more port area than that, I'd use at least 3 4" aeros. You would have to recalculate your design a bit to account for the extra port displacement if you wanted to keep the tuning at 35Hz. Each of the ports would have to be about 23" long. You could still use even more port area, cause the SA-8s have a usable throw of 25mm and they use it all.

hmm 23 inches long? that would force me to do ports outside the box which i was hoping i wasnt gonna have to do. also, they still make and sell these subs right?

[stevemead08 752]

That box sounds good for them. i have 4 sa8s in 3 cubes and 2-4inch ports. sound craazy. they will be available again very soon. i believe they are currently sold out.

[Curtis96olds 1]

That box sounds good for them. i have 4 sa8s in 3 cubes and 2-4inch ports. sound craazy. they will be available again very soon. i believe they are currently sold out.

hmm the only weird thing about the SSA store SSA Store - Sundown Audio SA-8 Subwoofer is it says its still a pre-order item, which i know its really not, but why havent they updated it?

also, how would subs up, ports coming out the side sound? cause thats the only way id be able to get 23" long aero's inside the box. also ive never used aero's before, do you have to put brackets on them so they dont move around at all inside the box or do you just let them hang there?

Edited May 30, 2010 by curt96olds

[Don Ganso 13]

That box sounds good for them. i have 4 sa8s in 3 cubes and 2-4inch ports. sound craazy. they will be available again very soon. i believe they are currently sold out.

hmm the only weird thing about the SSA store SSA Store - Sundown Audio SA-8 Subwoofer is it says its still a pre-order item, which i know its really not, but why havent they updated it?

also, how would subs up, ports coming out the side sound? cause thats the only way id be able to get 23" long aero's inside the box. also ive never used aero's before, do you have to put brackets on them so they dont move around at all inside the box or do you just let them hang there?

You will be fine with the ports coming out of the side so long as there is sufficient room for air-flow by the ports.

As far as the aero's go, I have never used them myself so I do not know how to best mount them. I just know that there is not enough port area for a non-flared port, but because Steve has had experience with a similar set-up, I would be inclined to ask him. If he says it sounds good probably does.

[stevemead08 752]

Yeah ports out the side is good. Like don said just make sure you have plenty of room for the vents to vent. You can order aeros from parts express I believe. I think jacobs getting more 8s early mid june

[Curtis96olds 1]

Yeah ports out the side is good. Like don said just make sure you have plenty of room for the vents to vent. You can order aeros from parts express I believe. I think jacobs getting more 8s early mid june

hmm so i guess its settled, gonna do a 3.2 cube box with 3 4" aeros each with a length of 23". now do i gotta support those aeros inside the box at all? and whats the general rule, how close can the ports be to a wall? cause ill have a max of like 6 inches from the side of the box to the side of my truck

new problem, the aero's you can buy at http://www.parts-express.com/pe/showdetl.cfm?Partnumber=268-352 only come in 17 inch lengths, and i need 23 inch lengths, can i just buy some 4" pvc pipe and attach the aero ends to it?

Edited June 1, 2010 by curt96olds

[Don Ganso 13]

Yeah ports out the side is good. Like don said just make sure you have plenty of room for the vents to vent. You can order aeros from parts express I believe. I think jacobs getting more 8s early mid june

hmm so i guess its settled, gonna do a 3.2 cube box with 3 4" aeros each with a length of 23". now do i gotta support those aeros inside the box at all? and whats the general rule, how close can the ports be to a wall? cause ill have a max of like 6 inches from the side of the box to the side of my truck

new problem, the aero's you can buy at Precision Port 4" Flared Port Tube Kit | sound ports PORT TUBES port tube port noise kits kit ar | Parts-Express.com only come in 17 inch lengths, and i need 23 inch lengths, can i just buy some 4" pvc pipe and attach the aero ends to it?

Parts Express also sells Dayton's ala-carte aero system, where you can buy tubes, inside and outside flares, coupler tubes, and elbows separately.

I don't know what you mean by how close they can be to a wall... Each opening is supposed to be the diameter of the tube away from any obstruction is all I know... I think... lol