just picked up an orion HP12D4. actually i got 2 of them in about the worst pre-fabed box ive ever seen!!
one sub was blown. stiff as a rock, so i have one good one. but the problem is i cant find any specs on a vented enclosure for it anywares. and the websites that sold them say there discontinued now.
i got them for free, so i just want to spend $24 on some MDF and build a box throw in a amp and sell it.
what size box and port would be the best SPL yielding setup for this single 12" 4ohm dvc sub?
either email Orion, or just go with a generic 2.0 to 2.5 cu ft box, and vent with a 4" ID port, and use the bcae1.com calculators to figure port length for tuning to 28Hz.
I'd go with the latter. I've done countless Orion subs, and they work well with those specs
ok, thanks wolf. and buy the way i FINALLY found the spec sheet on this sub and it says for a vented enclosure, 2.0 cu ft box - 4" ID port - 7.44 inches of port and that would tune it to 40HZ?
slot port is guna be a little over 12.5 inches. should it fire the same direction as the sub, or should it fire through the side on the opposite side of the box than the sub?
with a slot port, I typically have the slot open on the same face as the sub.
40Hz would be very boomy, and was a popular tuning frequency in the early to mid 90s, which is about the era of that sub if I recall. I'd aim for a deeper, more musical 28Hz. If you go with the round 4" port, it can be on the sub face side, or an adjacent side (like on top) It'll just be longer than 7.44" when it's tuned lower. if I recall, you'd be looking at closer to the 14" range? that's off the top of my head. I'd have to do the math to be sure.
i started the box build yesterday, but i didn't get much cut out because of the holiday and whatnot. getting back to it here in a few.
buy the way, would it be ok to finish the box in a black textured undercoating? would this affect the resonance of the box? iv'e ben wanting to do this for some time seems how the finish will be scratch and ding resistant. and i think the texture will add a nice touch.