Box too small?

[the10man]

Got 2 Skar DDX 12s on a Skar RP2000 amp in a Skar 12" sub box of 4 cf. Speakers start to sound like they're being overpowered with that plopping sound. Is it my box?

Click to read more...

 

[shredder2]

4ft3 Skar box?.. on a 2k amp/1 ohm?.. at your load assuming ALL other factors are taken care of I'd do something along these lines in my Suv.

I'd be willing to bet that Skarfab you got is just a bit smaller than this.

 

[the10man]

4ft3 Skar box?.. on a 2k amp/1 ohm?.. at your load assuming ALL other factors are taken care of I'd do something along these lines in my Suv.

I'd be willing to bet that Skarfab you got is just a bit smaller than this.

It is a Skarfab...4cf. That's before .3cf speaker displacement for two DDX's. Is that 4.95ft3 before putting the speakers and port in?

 

[shredder2]

Is that 4.95ft3 before putting the speakers and port in?

That Info line is "net"... what the subs will "see"...

 

[Bobbytwonames 5,000+ posts]

That Info line is "net"... what the subs will "see"...

**** just got real. I've got a big box for one sub. I'm thinking two 12"'s would've been better.

 

[n2audio 5,000+ posts]

This box?

SK2X12V | Dual 12" Ported Universal Fit Subwoofer Box | Skar Audio

The SK2X12V is the perfect choice when looking for a dual 12-inch subwoofer enclosure to pair with your subwoofers. Featuring a shared vented chamber, kerf style port, 4.00 cubic ft of air space, and tuned at 32 Hz, this box will allow your subwoofer to come alive.

www.skaraudio.com

I'm not sure it's TOO small, to the point it would cause mechanical problems. How big is the port though? It looks way undersized -- and too long if it's as small as it looks. Maybe 2" x 12.5? Does it go to the back of the box and turn back a couple more inches?

Maybe I'm just seeing the photos wrong

 

[the10man]

When building a box, do I use the whole internal volume of the box to determine the port length? If I have a box that's 6.5cf inside the 4 walls, do I use that when using these port length calculators. If not how would I determine the port length? Thank You.