Quote:
Originally Posted by 2000tundra2wd
if your "port" is a just a hole in your box, with nothing else. thats not a port. just a REALLY REALLY bad leak. ports are EXTREMELY complicated to build if you want them exact. trust me.
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Ports without tubing actually work very well due to their low loss (the air friction caused by a longer port tube can hurt the efficiency of the port). This type of port is harder to design due to lack of ability to tune properly - once you cut it too big, it's over. When I build a ported box, I always look at the impedance curve to tune it the way I want. You'd be surprised at how far off the manufacturer's thiele/small specs actually are for a given driver. If they're not accurate, don't bother building the box according to the instructions given by the manufacturer - it won't sound right without tuning it afterwards.
The OP's box is actually more of a 1/4 wave transmission line than a ported box.
I really like those shallow pioneer drivers
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2007 Tundra 5.7 4x2 RCSB slate metallic
2005 Corolla - all stock, cause it's the wifes
1986 Mustang GT - the stereo is under the hood
1990 Corolla - cause it was really cheap