PDA

View Full Version : check over my box ..please



mtx11
09-30-2005, 02:00 PM
i think i got my final designs . help me pick its for 3 12" Rockford Fosgate he2's powered by a mtx81000d in a 95 jeep grand cherokee

either this one

Net Volume: 5 cubic feet
Tuning Frequency: 32 Hz
Port Width: 2.25 inches
Port Area: 39.375 Square Inches
Port Length: 15.5 inches

External Dimensions: 42 wide x 19 tall x 15 deep.

or this one

Net Volume: 4 cubic feet
Tuning Frequency: 35 Hz
Port Width: 2.25 inches
Port Area: 39.375 Square Inches
Port Length: 16.5 inches

External Dimensions: 42 wide x 19 tall x 12.5 deep

Moe Lester
09-30-2005, 03:04 PM
more port..

PowerNaudio
09-30-2005, 03:52 PM
you should ether increase the diameter of the port or increase the quantity of ports.

if you want to stick to using a single port use this calculator to determine what diameter to use to keep your port from making noise.
link (http://www.carstereo.com/help/Articles.cfm?id=31)

or use this calculator to find out if your port will make noise.
link (http://www.carstereo.com/help/Articles.cfm?id=4)

last link (http://www.carstereo.com/help/Articles.cfm)