Hey folks. I've been nosing around for an inexpensive 1x15 cabinet without much luck, 'til this morning when I snagged an old 1x18 Peavey cabinet for the excellent price of $0. Dumpster beauty, it looks like this one: (http://images.guitarcenter.com/products/optionLarge/Peavey/110816967_lg.jpg) Now I'll admit I've never in my life even thought about a setup with an 18" driver, and I don't have any specific notions about what an 18 could add to my rig -- to he honest I'm pretty damned happy with my current 4x10... but man do I like free/cheap stuff Unfortunately, the cab is empty, so now I'm on the hunt for a decent speaker. My question is -- are there any reasonably-priced alternatives to the Black Widows that I should be sniffing around for, or should I just keep it simple and throw a BW in there? There's an ad on my local craigslist for the following 18's -- would any of these make sense for this box? Quantity (2) Cerwin Vega 18", 8 ohm , 300 Watts, model # 188 EM Good Condition, $60.00 each Quantity (1) Cerwin Vega 18", 4 ohm , 300 Watts, model # 188 EM Unused recone from Midwest Speaker $80.00 Quanity (1) Madison Executioner, 18" , 4 Ohm , 1000 Watts. $95.00. For a little more context -- my amp is an Acoustic b300h and my other cabinet is a 4x10 Ampeg B40 from the 70's with newer Celestion BL10-100x drivers, wired at 8 ohms. My amp is good with anything over 4 ohms impedance and has two parallel speaker outputs. I'd need the 18" to be 8 ohms as well in order to run it in parallel with my 4x10, but as fun as that sounds it's totally unrealistic for bars I typically play at, and I think I may be spreading my 300 watts kind of thin in that scenario. So I'm open to a 4 ohm speaker with the thought of running just the 1x18 at times. To throw another wrinkle -- if I'm not able to find an 18" I like at a decent price, I'm considering just fashioning a new baffle and turning this into 2x12 or a 1x15 perhaps. Although that's a big box for a 15. Thanks for reading, love to hear you thoughts.