View Full Version : Can you fire subs and ports down to the floor

03-30-2005, 08:53 PM
I Have four tens my question is can you fire both ports and subs down. And also if so how much clearance do you need for the subs or ports.


03-30-2005, 09:00 PM
ive been in a truck with 2 L7s and ports firing down and it sounded good. Loud too for that truck.

03-30-2005, 09:02 PM
Well if the ports are firing down, then there would be no air flow out of them. Wouldn't it do the same thing as sealing the port off?

03-30-2005, 09:03 PM
yeah, kinda defeats the purpose of a port I would think..

03-30-2005, 09:06 PM
Well no, not at all, the box is lifted off the ground leaving clearance for the driver and port. About an inch should be sufficient unless you are running a sub with a good amount of xmax. Downfiring isn't always great for subs that aren't designed for it due to gravitys affect on their suspension. But you should probably be ok.

03-30-2005, 09:16 PM
i built a ht box with the subs/port firing down...i just made the height from the floor to the port the same as the port width...my buddy is VERY happy with the performance


03-30-2005, 09:20 PM
Nice work :) . How much clearance would you need between a sub and the back of a seat? 3/4 inch? an inch?

03-30-2005, 09:32 PM
Nice work :) . How much clearance would you need between a sub and the back of a seat? 3/4 inch? an inch?

thanks :)

imo max 1 way excursion + 1" to be safe..

03-30-2005, 10:38 PM
Downfiring is very popular in HT...and for good reasons :)

03-31-2005, 12:32 AM
I would think its absolutely fine if it's got that much clearance. It's like a home theater sub. down fire a bit ch

03-31-2005, 10:13 AM
It will work but you really would want the diameter of the ports clearance, so if you have a 3 inch port you want 3 inches but you can get away with less but performance will suffer a tad bit. If it were me I'd fire the ports out the sides to the doors or backwards or forwards, that way they could completely do their job.