I've been playing my Allen Encore head through a detuned 2x12 cabinet for a couple of months while I was looking for a deal on a speaker. I found an Emi Swamp Thang on eBay for cheap before the holidays, and it's just now breaking in. I decided to combine it with a RWB per some of the recommendations on TGP, and bought one from TGPer ChickenLover last week. The amp sounded just fine with the ST, typical BF tone with some bottom end thump. Once the speaker opened up a bit I got more punch, as I had hoped. I installed the RWB last night & played through each speaker one at a time to compare them. The RWB seems pretty well broken in already, and has a bit more highs than the ST, which has more mids and more bottom end thump. The difference is subtle but noticeable. Almost like playing through the same speaker with different tone control settings, but not quite as drastic as using a bright switch. Both retained a nice BF clean tone, with just a bit more hair using the ST. Once I compared the speakers, I wired 'em both up. HO LEE CRAP! This sucker breathes fire now! The combination of speakers really transformed the sound. Not only is it louder, it has a looser, warmer, less polite sound. It just sounds 'rude' in an oh so musical way. I tried it on both the 4 ohm & 8 ohm settings, and preferred the 4 ohm setting. The 8 ohm setting (mismatched with the speakers in parallel) was a little closer to one speaker, but still sounded grittier than one speaker at 8 ohms. Even with the MV at full, the volume at taste and the raw knob at 1, the amps seems to have an edgier, looser, less polite sound. I like it, but it's not quite as clean as before. Turn up the the volume or the raw knob a little and she just gets nasty. I really like the combination of these two speakers, but now i have an amp that can't really be considered a 'bedroom' amp. It was stretching the definition before, but now it just shatters it. It's just too damn loud. I'm seriously considering adding an on/off switch to each speaker lead so I can play either speaker or both anytime I want. Without this I have a feeling I won't play it as often, which would be a real shame. I'm gonna e-mail David Allen & let him know he's got a real fire breather in a 2x12 Encore.