I'm trying to learn how to Build slot boxes, this will be my first box with out using (RE Box Cal). Can someone double check to see if the port is right. The box is 15h x 36w x 25d. Looking for around 27-28hz for 2 X12.
Port length is measured down the middle of the port, not along the wall. The one you have pictured would be 28.08".
Originally Posted by soloxp
if i understand you, 15x36x24 is the max dimension i that will fix. box will be firing in to the car
With those dimensions, are you going to build the box in the trunk? Cos it probably won't fit in through the opening once it's built.
Originally Posted by KickinBlazer
with at least 4.5 inches of space on the port side of box it would effectivlly lower tuning another 2hz....and mount the woofers closer together and away from the port opening inside the box that will help port tuning aswell
You might want to change the # of common port walls to 3, it might change the net volume and tuning. At the moment it thinks you are doing a square port touching only one wall of the enclosure.
The tuning will stay the same if it's what you want. As a rule, people go with port area being related to volume, but you also have to take into account the subs excursion. In the past most subs excursion was around 20mm, but newer subs like the SD X and Z have increased to 30mm so need more port area to keep up with the increased pressure inside the enclosure.
Seeing people run more power is a sign of underrated subs becoming more popular.
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