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View Full Version : Small port area and low power use



Xprime4
03-27-2009, 01:18 PM
The title is almost too self explicit. :D

my box is 6.8 before displacement. Sub is Fi Q18. It's in my home theater/audio system hooked on a ma audio amp and 22amp rail psu. I ain't really getting more than an actual 200watt of it, but by looking at it sometime, it def looks like more. Anyway

All i can find around is 4 inch pvc tube for my aeros. There is already hole made from a prior setup, which was sealed later on. Anyway i was thinking about using only 3 4 inch port. I know its ain't a lot, but with the little power i'm sending to it, could it be ok?

I don't want to spend the big bucks on this box, pvc tube are 35$ for like 96 inch long. one at top.

and i don't want to tune too low, cause i'm leaving with my gf family and i don't want to make the whole house shake without me hearing actual bass...:laugh: like it is sealed atm lol
i was thinking about 28hz.maybe a little lower like 25. I didn't like 28hz in my car, but it sounded perfect for my house

l7runner
03-27-2009, 01:22 PM
Shouldn't be too bad...my home sub is in 10 cubes tuned to like 18hz, and I only use 1 8'' port with no problems

Xprime4
03-27-2009, 01:30 PM
Shouldn't be too bad...my home sub is in 10 cubes tuned to like 18hz, and I only use 1 8'' port with no problems

well one 8inch is a lot more than 3 4inch :crazy:
Are you using sonotube? can i buy sonotube at home depot?

Bass Addict
03-27-2009, 01:31 PM
at the moment,i'm running 190 watts on a 12 in 2.3 cubes with 30 sq inches of port and surprisingly,it does pretty good lol.i will be upgrading to either a dayton 500 or 1000 w rms plate amp shortly though

Xprime4
03-27-2009, 01:46 PM
well that's an ok port areo for your space.

i'll would be getting like 38inch sq for 6.8 net. that's small

Random1010
03-27-2009, 01:52 PM
Get a sono from the Hdepot

Xprime4
03-27-2009, 01:56 PM
Get a sono from the Hdepot

they'll cut me one at the lenght i want? i don't even know what they are

Random1010
03-27-2009, 01:59 PM
they'll cut me one at the lenght i want? i don't even know what they are

No, but its easy to cut. Its cardboard..

Xprime4
03-27-2009, 02:04 PM
nice then, how long i need for a 28hz tuning ? 19.56 accurate?

Xprime4
03-27-2009, 02:23 PM
need a quick answer so i can buy it before job :(

Xprime4
03-27-2009, 04:31 PM
just got back from HD
I got a 8 inch sono that is 8 **** feet long for a little 10 bucks!
I only need 20inch lol

Xprime4
03-27-2009, 07:13 PM
I just came to realize that a 8inch sono ain't really bigger than 3 4inch :(
6.8ft/cu with only 50sq in of port and 200watt. Is that a bad formula?