air movement in sealed box

[cloud77 28]

Does the air moving around in a sealed box take any temperature change in relativity to the cooling of the coil? Since air is bouncing off the back baff does it actually cool the coil more effieciently than a ported enclosure?

[jokers10 19]

I doubt ambient air, regardless of box type, has any effect on cooling the coil. It will take longer to heat a coil up if the temperature of the air is cooler, but I don't believe either enclosure has an advantage in keeping the coil cooler.

The argument of a sealed enclosure keeps recirculating the same air over the coil, which gets warmer with each pass, would counteract any gain received by bounce back.

^--- This was just something I made up, and it might not contain any value, but it seems to work in my head.

I say focus on building an enclosure based on the type of audio you listen too, with the specifications of the woofer, vehicle, and power taken into consideration. I doubt overheating a coil is a real concern with the accounts of box design based on ported vs. sealed.

[KyleBrown 121]

There is less cooling in a sealed box, you have the same air molecules bouncing off of each other, generating more heat and not mixing with atmospheric air molecules.

[jonbearsmt 919]

technicality a ported box does not move that much air.. fresh air in and out of it.. as you may think.

you sub-woofer only excites the existing air. in and out as much as your woofer moves.. so what 30MM at the most in and out.. only moving the air a little amount in and an out.. never replacing the air inside the box.... but only once again yes moving it back and forth only millimeters

just my experience it truly depends on the sub.. if it has a good cooling design then it will dissipate heat well.. it it does not.. it will not ported or sealed IMO. should only be decided on goals. and anticipation

but thats just my thoughts.

buzzed

Edited March 9, 2012 by bigjon

[cobra93 47]

Good question.

I had a similar thought in one of J-roadtatts threads.

The sealed enclosure may only be recirculating the same air, but a ported enclosure will limit cone travel at tuning.

I'd think if you compared sealed and ported systems using material that was mostly around the ported systems tuning the sealed would remain cooler. More air movement.

I would say you'd need to be more specific to get the correct answer.

I'd also say if you're that close to cooking a coil, you should take a look a different equipment.

Edited March 9, 2012 by cobra93