that could mainly the crossover issue and/or lack of proper/good mid bass which you cant really do much about it. of course, it could be different than my case since i am using a C3 and not S530D

Also, given my experience in subwoofer/audio/car speakers, stuffing your port not only steers you away further from your intended objectives, it will also almost definitely cause the problems you have mentioned yourself. so my personal advise is to remove the stuffing

=edit=
bolding the bottom important part too

haha congrats on the best free gift ever...4 me 2.1 is beastly enough already n so S730 is still my top choice now

Seal the speaker up will give you good response but sacrifices low frequency response.

Better you leave it original or stick the stuffing at the woofer magnet there, the ported enclosure are calculated according to the subwoofer.

Maybe you can try out replacing the interconnects first.

haha yea, that's what I thought so... just playing around... thx for the advice

oh how I wish I could just buy some Elna caps to mess around with these

not sure if you've gotten my advise fully, but as far as i am concerned, caps would the last of your worries lol.

well at least messing with the capacitor value slightly would change the crossover characteristics

i will be honest with you: you're gonna be wasting time and effort, and most importantly money depending on what kinda caps ur getting/modding lol.

sometimes I wonder... do they really calculate them?
the amount of port noise is huge in these~

power911, have you tried the papertube extension for the port like you did with your old coby speakers? lol i recently did it to my megaworks 550 and it eliminates alot of boominess in the subwoofer. it doesnt make my subwoofer play lower than it's designed, but at least it's not extremely boomy now. or you can always try the papertube and straw method. for my smaller subwoofer, it manages to reduce more than 50% port noise for zero dollar.

Yup they do, just didn't simply show out to public only.
The port noise is another case, that is the turbulence, but not related to the calculation.

That is why you can see high end speaker has special technology like flow port in B&W speakers. That port is not a joke, really can't hear the port noise unless you put your ear besides it and running at high volume.

lol at the pringles can... but does it fit the S530 port perfectly? i thought the pringles can is larger. gotta hate the port noise, i would try anything to minimize those sshhh noise.

does s530 require sound card?

everything requires a soundcard... you can't expect a graphic card to make sound

if your soundcard supports digital out (optical or coaxial) then you need not to upgrade your soundcard

but if your soundcard sounds bad then you need to upgrade