ports and noise

I dunno.. I mean I calculated the ports in WinISD first and it didn't have a problem with the setup.  I have a pair of 12's with four 1-inch ports that are each about 4inches long.  This is why I was originally expressed some original suprise over the problem.

If you stand over the trunk and really listen, it does chuff just a bit when the system really gets going, but nothing you hear in the car... certainly not a fart or swish noise.  It actually is one of the best sounding boxes I've ever constructed.

If I recall, that port velocity was calculated to something like 110feet per second... it was right under what WinISD wouldn't have been happy with... I had to play with it a bit to get the vent mach down into the green.

And yes... given my reservations about the smallish ports I was using, I constructed a slightly larger box for the 12's with six 1-inch ports tuned to the same frequency.  This box sounded identical to the first box.  I probably would have stuck with the six-port enclosure, but when my old Toyota got wrecked, it wouldn't fit into my new car.. so I switched back to that old four-port box.

Whoa that looks sweet.  Reminds me of transmission line boxes my ex's dad used to build.  You should finish it.

Anyway... naww I needed *really* small ports, so that's why I ended up using little 1" ports like that.  Four 1"x4" ports were *so* easy to build into the box.. and I'm not really running much power to my 12's anyway.. like ~200watts/sub.  I'm liking those TC Sounds subs that keep coming up again and again and I'm thinking of building a new slot-port box specifically for my new car around them... I wanna drop the impedence on my subs down to 2-ohms anyway.. I'm kinda wasting half my sub amp running at 4-ohms.

..Anywho..yea sorry abuot the thread jackage.