Years ago I used to play in c tuning through a laney bass amp with pedals supplying the distortion - sound was awesome - tight as hell! Not tried a 4X10 bass cab tho - but I'd guess that it would sound tight and crisp...
Actually I went for a different approach.. My Rivera has the ability to slave off to another amp so I ran into the R 100 and my eden combo 210 at the same time. It was hard to get it dialed but the sound was Extreme. I did this trying to figure out if I would like a Knucklehead reverb with a 412 and a powered sub...Unfortunately I did..Los lobottom sub 2 shatkes my house and makes the lights flicker along with making the neighbors flip me off...
I run a stereo rig with a 1x15 w/tweeter hartke on one side and a 4x12 on the other and I think it sounds great. You do need alot of power though. I use a crown XLS 402 (260 watts a side@ 8 ohm's) You can see it in one of the pic's in my myspace. I had it stacked for that gig.