Hey Kjung, maybe that's what's going on, i've only had it on one gig so far, I'll know more after this weekend. I usually run the Eden flat, sometimes a bit of mid boost to cut through depending on the stage, I never run the enhance past 9 0'clock, usually less. My previous road cab was a beat up 210 yorkville (I know, it was cheap!) I think I'm just going to have to find the sweet spot with this cab, and the gig I had it on was an unusually high-volume situation. Mobax, yes, the clip light would flicker around the 11/12'o clock position (master volume), but only when I dug in on the low-B. I'll report back after the weekend, thanks everyone, gotta hit the road!
Cool! Another thing is that cab can handle a bit more ooomph than either the WT or the MB heads put out (or any 500 watt or so head into 4ohms). So, if that WT power section is really clipping, you might notice a real difference with a higher powered head like the WT800 (b or later so you can bridge into the 5.3 impedance) or the wonderful Mesa M6.
Again, the 310UL will only get so loud, but it will get louder up to a point with a higher powered head.
TBer Vic reports that he hears his 310UL open up a bit more with the massive power of the M6 (yes, on paper it's only 100 watts or so more than the typical 500 watt amp, but testing has shown it's more like 200 watts more than the LMII, for example, and you can hear it!). IMO!