Need box built around Houston/port Arthur area

Ok so I got 2 dc lvl4 15's. Got a box built by a shop, so I hooked it up and hardly any air movin out the port. He called dc when he built it but something isn't right can someone that knows what they are doing please help. My email is Preston.a.hart@hotmail.com

that port looks weird. like the bottom isnt there. im in houston and i am good with boxes.

The port is about 2-3inches from the front wall.

i emailed you my number. give me a shout.

The box looks pretty well made... but DBDaddy is right, something's not right with the port (atleast in the picture). If you can post a pic of the inside of the box, showing how the port is set up, that would help.

DC doesn't have too many manufacturer defects... so if the box is done right, it would have to be in the amplifier/wiring/voice coil configuration.

Make sure you have all the subs "in phase" with each other, and in the right configuration:
BCAE Article on Impedence

Next, make sure the amplifier is putting out proper power. Use one of the 3 methods below:
The Suicidal Egg Roll's Gain Setting Tutorial

If you're near the Medical Center, I'd be glad to help. My boxes aren't pretty, but I have built quite a few

Inside dim. W-58.5
H-22.5
D13.5
Port is 3x32.5 and 31 in length

So I'm guessing that the port is shaped like a tall "U"... and opens right behind the subs, in the top of the box.

The dimensions you gave, say that the box is ~8 cubic feet internal volume, and that means your port dimensions (according to The 12 Volt Calculator) dictate a 30 Hz tuning.

Even for 15's, that's pretty low tuning. Was this according to DC specs?

Also, your port area is just fine, having an area/box volume ratio of 11.6. The port width/height ratio is ~10, and the rule-of-thumb maximum is 7, so somewhere between the excessively low tuning and shape of the port MAY be part of the problem... but it shouldn't be drastically reduced output... something else may be funky.

It's shaped like a L. Please pm me your number