Hello.....I just purchased a couple 12" Celestion V30 speakers and now intend to build the perfect speaker cabinet to hold them. Trouble is that I dont know much about cabinet construction. So, I hope somebody out in guitar-nutjob land could offer some insight and advice, including pointing me toward good education and materials resources. Im building this cabinet to match my Bandmaster Reverb TFL5005d head. Its 45w RMS and 4ohm. I've played it through a Marshall 1966b with two Celestion 12T-75s and I've decided the cab is shrill sounding. I guess that means Im leaning toward a fatter, warmer tone. Im definitely into vintage tones. I play a vintage style Strat and a vintage style Les Paul. I'll use the cab for gigging. It needs to project sound out into the room but I need to hear it also. My 1966b is so directional that I often cant hear it as the sound travels across the floor. So, here are a few things Im curious about, that Im considering for this cabinet build. First, I prefer a small footprint, hopefully not significantly larger than my Bandmaster (25"w x 10"d x 13"d). How does the small volume cab impact tone and sound projection? If a small volume footprint limits low end response, would a bass-port or two offset this? Second, I've read that pine makes for a fat, warm tone. I've also heard its unstable and subject to crack. Many seem to insist on 3/4" birch plywood. Does the material make a huge difference? And what about rigidity? Airtight? How do these factors impact cab performance? Third, Im considering a closed back and a slant-back baffle. This combination might create punch and project sound....up to my ears rather than across the floor. Make sense? Does the slant-back baffle change the volume of the cab, or its resonant properties adversely? And what about insulation? I hope you find this discussion interesting enough to contribute. Thanks!!!