I just picked up from a buddy 4 dayton rss390hf 15" subwoofers that were left over from his project ( dont ask me why he had them left over ). Anyways, i have a spare 15 cuft enclosure that i made for a project a few months ago that i abandoned and would like to make a push push subwoofer with these drivers and that enclosure. Now i have a few extra ports left over but i doubt they will be big enough since there only 7" long and 3" in diameter. What would be a good port for a tuning of around 18hz-20hz? i could go lower if its easier but im looking for something to put in my living room that can deliver some decent spl. Thanks again.
Here is a WinISD on your project. You can see that with 4 of those, the curves are not much different if you vent the box or not. Personally, I would go with a sealed box, that way you are not getting any noise from the vents and the sound is generally tighter or faster sounding. Those are very good subs by the way.
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