help me out plz

[mejweez]

hello everybody

i want to make a ported box for 2 12" kenwood kfc-w3011

and am going to follow the recommendations on the manual

but the problem is that there is a design for a 1 sub only and it's with a round port

should i make two individual boxes or make two boxes with one common wall between them ??

will that make a difference ??

i will use a 3" pvc pipes

any advice on how to prevent noise ?

[CleanSierra]

Use 2 3" ports. 1 per sub should be just fine. Make sure you have the proper length to achieve the tuning you want. a single 3" port could very well cause noise, which is why I'm suggesting 2. Im currently running a single 12" sub with 2 3" ports and it sounds great.

[CleanSierra]

Seal your port to the size of the box on the INSIDE where the port meets up with the wood. Do a roundover but on the outside of the port entrance(with a router) and that will flare your port. That will help for better airflow

[CleanSierra]

Also, you can have your subs in a common airspace chamber, it just needs to be the airspace for 2 subs. So if they need 1.5 cubes each, the box needs to be 3 cubic feet

[Joe X]

Those drivers will work better in sealed, heavy polyfill damping.

[john253a]

how much power you putting, what amp?

sealed will work well

so does ported, main factor recommend 37hz with 4sq" per ft with aero, personal that a bit low, but with only 11mm xmas

idd do a single 4" per sub @ 2net (depending on power) and as for hz that all depends on what u want to achieve

if you want look up psp ports you can get some nice flared port for not much coin