best # of subs and box ideas..

[DB.sickest.kid]

Ok I have a setup in my 04 gmc extended cab.

It's 2 dd 9515g in a pwk box that's tune to 28hz.

I have a single dd m3a pushing the subs. My question is would it be better to.do 3 15s or 2 18in?

And what feq. Should the box be tuned. The catch is I don't want a wall.

Any info or input will be grateful.

Ps everything is stock in the electrical department but will upgrade

Soon. So have another dd m3a that I can strap

[john253a]

it all depends on the sub and what u want to active?

[Blackedout]

3 15s = 530 sq inches of cone (about)

2 18s = 510 sq inches of cone (about)

Both of these setups are going to take a wall to get the proper airspace.

If you can't build a wall, stick with 2 15s.

[TeamHT]

Incorrect. I would do three 15"s. I don't have extensive experience with DD equipment, but I built a box for three 15" BTLs on 12,000 watts 10.5^3 net 14^2 port per tuned to 35hz. Only up to the window line sub forward port up in an 03 Silverado extended cab

[TeamHT]

[Bump4life]

^^ that one. 3 15s can kick. more power handling. but if you are going with DD 9515s you gotta run more than 1 M3. id consider 3 m2bs or 3 m3bs even. maybe 4 m2bs strapped up somehow.

[Bump4life]

problem is for that setup you need a minimum of 10.5 cubes net with a shit ton of port. 4.5 net per sub would be bettter. so 13.5 net plus your port.

[n8ball2013]

and tune it higher. 28 hz tuning iwth DDs just goes to confirm my thoughts with your box designer.

[Bump4life]

^^ agreed. forgot to mention that. PWK and his flat responses. ahhaha 28 hz tuning with DDs. what is he trying to play? 17 hz?

[Blackedout]

Well played. Looks good.