Ok, so I've been considering doing something to change my sound. I'm really looking for something that'll give me a very smooth yet relatively bright sound. I've noticed in pretty much every cabinet that there's at least one fault. The BagEnd 15"'s I've tried are excellent with producing smooth lows but seem to be at a loss in punch and at any high frequencies, aside from using the coax, which to me sounds clacky. I'm guessing going DIY would be the chance for me to obtain my ideal cab. I'm thinking currently of using a 15" and an 8". Obviously the 15" would produce the lows and the 8" would be my high speaker. The thing is, I'm thinking of going 1x15 and 1x8, rather than doubling the 8"'s. I've tried going through the Cabinet Building 101 thread for info but can't find anything on this type of configuration. In the thread I found WinISD which I tried using but still won't give me the cabinet size or port size for the enclosure. I was thinking I could try and just add the dimensions given by WinISD together and come up with the cab size, but even if this would work, it still doesn't help me with the port size. The two speakers I'm looking at are the Eminence Omega Pro 15 and the Eminence Beta 8. Any help would be appreciated. Thanks.