Edges of glassed pieces.

I wouldn't worry too much about enclosure volume, as long as it's sealed and has some minimal airspace it should be fine. Unless you were using these as subs I would think a 6.5 would not require much airspace to reproduce 100hz and up.

They say a 50% fill of polyfoam will make a speaker perform as if it were in a bigger enclosure. I can't imagine this hurting the sound so why not use some. However, I think it is more for subwoofer purposes then a mid. If the enclosure has more airspace it should theoretically produce deeper bass but IMO as long as it's sealed and aimed properly it will always outperform a door or dash mount as far as SQ.

I wouldn't worry too much about enclosure volume, as long as it's sealed and has some minimal airspace it should be fine. Unless you were using these as subs I would think a 6.5 would not require much airspace to reproduce 100hz and up.

They say a 50% fill of polyfoam will make a speaker perform as if it were in a bigger enclosure. I can't imagine this hurting the sound so why not use some. However, I think it is more for subwoofer purposes then a mid. If the enclosure has more airspace it should theoretically produce deeper bass but IMO as long as it's sealed and aimed properly it will always outperform a door or dash mount as far as SQ.

I dont typically reccomend making a kickpod actually sealed.  The chances of you being able to get the right airspace in there and not have the pod take over the whole footwell (slightly exagerated) are minimal.  Therefore, when the volume is too little it'll cut off your low end production.  I guess if you're not using the speaker for any low end then it doesn't really matter.

I'll tell ya man, my best advice for figuring out how they do things they do is subscribe to magazines, buy books, watch the tv shows and buy videos.  Get yourself some real hard background, even if the complicated stuff doesn't make sense at first.  Then once you can see how something simple is done in your head, try it.  This will give you some hands on experience with some of the materials and processes that were used in the more complicated things you read about or saw.  Then, once you have created some dust, go back and watch/read/plan again.  things will start to come together.  It worked for me. 

If the pod is not sealed what would you suggest?.....a ported pod? that would be nice if there is space and you are good at rocket science and/or have alot of free time.

But if just simply not sealed I would expect some cancellation...that can't be a good thing....am I wrong?  realize this is a 6.5'' used as a mid, a small tight enclousure should be the way to go I would think. And if it is a quailty mid with some power this will sound great.

Does anyone really like the sound of port noise?  lol

I guess in a small pod maybe it would sound like an air leak?

I wouldn't know because I seal them tight so they perform. I guess in some instances a door will produce better bass response if it can act like an infinite baffle..but thats kinda unpredictible. And mids aimed at your feet and very unequal distance from left/right is not really condusive to a great sound stage.

So perhaps there may be a small compromise in lower frequencies but to have a leaky enclosure expecting it to give better low end doesn't cut it ...for me at least.

Sounds like that pod was way too small and might have had leaks as well. But if  they were mounted in a location the kept most or all of the rear wave seperated from the front wave once you cut the back..it would perform better on low end, like you stated as an infinite baffle.

Just goes to show it can pay to experiment..Even if it is just you..if it sounds better to you..and works for you..no reason it is not the best for you.

I tend to make floor pods pretty fat so there is enough airspace to have some low end..but most of my systems that I build pods for are competition level so I generally use a midbass up front as well...like 8'' enclosures in the floor and the such so I am typically more concerned with "punch" and not low end so much with the mid ranges.