Port Sizes Question
 

I bought 2 10" Lanser sub-woofers and for the recommended ported enclosure it says the port size should be 2 x 9.5" port, 21.25" long. I have no idea what this means. To me it says I need 2 ports 9.5" in diameter 21.25" long and I know that can not be correct. So what does it mean?

Sounds like a slot port 2"x9.5" opening by 21.25" vent length.

What do you mean a slot port? 2 ports? 2 ports at 9.5" instead on 1 port at 21.25"? That's the only thing I could imagine it meaning.

I got another question. Which is a better set up using my sub woofers for an example. With 2 10" Lanzer sub woofers rated at peak watts 1200 each would it be better to get a 2400 watt mono channel class D amplifier or 2 1200 watt mono channel class D amplifiers or get a bridgeable 2 channel 2400 watt amplifier?

Slot port. The name is pretty descriptive. Here, let me Google it for you.

https://www.caraudioforumz.com/attac...ine=1406149219

The slot port is the rectangular opening on the right side of the box.

Oh...I had no idea that you could port a box like that. Never seen or heard of it before. Thanks.

You can actually multiply any 2 measurements that come up with 19. The port is 19 square inches of area. This way you can do a square port or a rectangle port. Length stays the same.