To port or not.

[Average.Joe]

I have a memphis audio 15 br12d4. The manufacturer says a 2.25 cubes ported. But after loading the woofers parameters in to the box builder, it says 1.67 ft sealed. Any advice?

Sent from my SAMSUNG-SM-G900A using Tapatalk

Click to read more...

 

[The Camry]

I have a memphis audio 15 br12d4. The manufacturer says a 2.25 cubes ported. But after loading the woofers parameters in to the box builder, it says 1.67 ft sealed. Any advice?
Sent from my SAMSUNG-SM-G900A using Tapatalk

Ported. Just do it. Fuck the parameters.

 

[Jeffdachef 5,000+ posts]

I have a memphis audio 15 br12d4. The manufacturer says a 2.25 cubes ported. But after loading the woofers parameters in to the box builder, it says 1.67 ft sealed. Any advice?
Sent from my SAMSUNG-SM-G900A using Tapatalk

go with at least 3.0 to 3.5. 2.25 sounds like a disaster.

 

[Average.Joe]

I don't have that much room under the back seat of my truck.

Sent from my SAMSUNG-SM-G900A using Tapatalk

 

[Loudmp5 10+ year member]

ALWAYS PORT!!! If you do it right you'll be good, no prefab sh1t

 

[CSCStang]

I don't have that much room under the back seat of my truck.
Sent from my SAMSUNG-SM-G900A using Tapatalk

Why would you cram a 15 under the bench? What truck?

 

[Average.Joe]

It's a 12.

Sent from my SAMSUNG-SM-G900A using Tapatalk

 

[Average.Joe]

The salesman told me 2 cubes ported and it has a shallow mounting depth.

Sent from my SAMSUNG-SM-G900A using Tapatalk

 

[CSCStang]

It's a 12.
Sent from my SAMSUNG-SM-G900A using Tapatalk

My bad. What truck though?

 

[Average.Joe]

2015 f150

Sent from my SAMSUNG-SM-G900A using Tapatalk

 

[CSCStang]

2015 f150
Sent from my SAMSUNG-SM-G900A using Tapatalk

I've done a few under bench for that truck. You'll obviously need an up or down fire configuration. What's the tmd of the sub? And you would have to come out from under the bench to get to 2 cubes.

 

[Average.Joe]

I was gonna raise the seat a couple inches. Fire down bottom of box may come out a couple inches. My only other problem was port size. I was going to use 2 3 inch aero ports @ 17 inch long on either side of the box. I'm worried about port noise.

Sent from my SAMSUNG-SM-G900A using Tapatalk

 

[CSCStang]

I was gonna raise the seat a couple inches. Fire down bottom of box may come out a couple inches. My only other problem was port size. I was going to use 2 3 inch aero ports @ 17 inch long on either side of the box. I'm worried about port noise.
Sent from my SAMSUNG-SM-G900A using Tapatalk

Yeah under 7" port per. You'll most likely get port noise. 3 3" pushes it up to 10.5ish. What tuning you looking for?

 

[Average.Joe]

32 34. I'd like a good mix of sq/spl

Sent from my SAMSUNG-SM-G900A using Tapatalk

 

[CSCStang]

32 34. I'd like a good mix of sq/spl
Sent from my SAMSUNG-SM-G900A using Tapatalk

3 3" @ 20" will be roughly 34hz at 2 net cubes.