Hi folks, I've been reviewing and searching on this forum (and others) on this topic, and the best I've found is "it depends". I'm hoping I can get at least a baseline (pun intended) on what the minimum in weight and price is that I can get away with. I'll explain. I play in a rock band and have 2 rigs One is a SWR Workingmans 15 combo which barely keeps up volume wise. At my last gig (a bar) I had it at max vol and about 4 on the gain to be heard at all over the drums and guitar, any more gain and it got distorted, but I needed it a little louder still. My other rig is a GK 800-RB head which I play thru a Kustom 2x15. The amp is awesome but the Kustom cab weighs a TON. My thought is, I want to sell the SWR and buy a cab for my GK head without breaking the bank - or my back. I often can play thru the PA but not always, so I need to be able to produce sound in a club or bar setting that is sufficient to be heard thru the sound of the drummer, guitar player, etc. The GK 800-RB, for those not familiar, has a 300 watt 4 ohm low end amp and a 100 watt 8 ohm high end amp, all in the same box. Looking at the current offerings on the market these days, it seems like manufacturers are offering less cabs with 15s and more with 12s and 10s. I thought bass cabs only had 15s, and here people are running 10s for a bass - man I must be old (so where's my jet pack?!) Ok, so for you folks that are or have been in rock bands playing with acoustic drums and enthusiastic tube amped guitarists, what sort of cab arrangement (or just cab singular) can I get that will allow me to cut thru the sound without breaking my bank or my back? Is there a single cab smaller than a 2x15 that will realistically keep up with the band if I use it on the 4 ohm, 300 watt side? Coming out of the 4 ohm side I know my Kustom 2x15 does (tho it does sound a bit dull) but I am not sure if a 2x12 or a 4x10 is up to the task. I know most cabs seem to be 8 ohms these days, so obviously a solution that looks toward growing my rig would be to find a way to run 8 ohm cabs, but if I run an 8 ohm cab thru my 4 ohm output I will be cutting my 300 watts down to about 200 watts. Is there an inexpensive device to run in series with an 8 ohm cab that will simulate a second 8 ohm cab so I can just run 1 8 ohm cab over my 4 ohm side at full power (or is it sitting next to my jet pack)? I know neo magnets are lighter and more expensive than the ceramic equivalent. I tried a Genz Benz 210 and it sounded pretty full but I couldn't try it at "band volume". Ideally, I would like to get an answer like "you need a cab with a minimum of this many of that size speakers to cut thru the mix, and here is the specific of what I run". Suggestions, advice, your 1 cab solution, please?