I have a good friend who is a master carpenter/metal worker. I am trying to bludgeon him into building me a custom bass cab. He took my mid 70's Hiwatt front loaded guitar cab a couple years ago and made an exact copy (except 1" deeper). He used douglas fur plywood because it was a prototype. But it ended up turning out perfect and sounds awsome. He has a bunch of baltic birch and I wanna have him build me a bass cab. If I am going custom I was thinking why not go off the wall a little. Like a 6x12 or 3x15. But at the least I want a 4x12. What would you players and sonic engineers recomend for a cab like this? Porting, baffleing, ect... I need to try and decide on speakers too. I will be playing Ampeg through it so I want to make the most of that sound. Not super vintagey per say, but nice and punchy and lending itself to the ampeg tone. So any build suggestions, construction ideas, speaker ideas, ect are welcome. BTW....weight is not a factor in making my decision. Awsomness is.