that's like mustard and ketchup...2 completely different things man.. [img]graemlins/freak.gif[/img]

True SPL really has NO SQ QUALITIES!!!!
When looking for SQ really you should only run sealed if you are attempting hardcore SQ, the reasoning behind that is sealed is the only possible way to get a true flat response. Poerted is used in SPL and daily driving mostly but hardcore SQ people use sealed in every case that I have seen. You really need to have a goal in mind before you decide on what type of enclosure to use.

This post was a combination post by myself and Livin Loud. </font>[/QUOTE]And how exactly does this answer his question about port area? He was asking about the differences between larger and smaller ports, not between ported and sealed boxes. I've asked this question before as well, and it's hard to get a straight answer. Maybe people just don't like to admit that they don't know everything...

</font>[/QUOTE]difference between larger and smaller ports is tunng, and air flow, velocity, woofer excursion, power limits, sound quality, etc..


Livin Loud </font>[/QUOTE]Now we're getting somewhere...anyone care to add to this?

 

Usually the larger the diameter of your port the longer it has to be to tune to the same frequency. As far as I know, the volume taken up by the port is subtracted from overall volume of the enclosure, therefore the best port to use(generally) is the smallest diameter( that does not introduce port noise) as this will yield a shorter lenth and therefore a smaller volume. If space is a factor this is an issue.

 

hmm.. this is a really really tough topic to answer well. basicly you have to look at what drivers, impedence, woofers specs have to be taken into account, such as FS, effeciency, impedence, power into the woofer, etc, when making ports that work "best" ! in my expereince it's all about testing, at least in spl ports....
ohh geez.. i don't know where to even start to elaborte on.. someone drop me a ball where to start? LOL.. [img]graemlins/freak.gif[/img]

Livin Loud

 

Where to start, where to start?

Hey Curtis I have an idea for you.... write a book.lol this guy will buy it. [img]graemlins/wavey.gif[/img]

But like you said the only way to know is to test, blow a few subs and test some more.lol

 

2x the diameter means 1/2 the resistance.. thats about it..

I agree with Livn as port resistance can effect things like Q and fb.. but I wouldnt read too much into it... as long as resistance (and velocity)is kept in check and there is no port noise Id tend to agree with veeman...