NO!zac2944 said:I used to run my Walkabout at 2.67 Ohms from time to time and never had any problems.
I have done this on maybe 5 to 10 gigs, with typically three 50 minute sets. I have never had any issues or shut downs.
I feel very comfortable running at 2.67 ohms, and would do it again if I needed to. I have yet to hear about anyone else having issues either. I think that this thread will help use get a good idea of just how far you can go.
Anyone want to donate there Walkabout to science? We'll run our own "Smoke-A-Walkabout" test, and gig it long and hard at 2 ohms till she dies!
As a side note, I spoke to Mesa about this as well, mainly because I've been researching fans, and I found one that is about 75% quieter, but while it has a pretty high CFM rate, it's still not as high as the stock fan (which I could probably us in my Mazda!
Anyway, I asked "if it overheats, it just goes into thermal shutdown, right, so should be worst case the rig turns off, right?" They guy basically agreed, but not with the kind of positive assurance I'd like to have heard.
Bottom line is, someone's just gonna' have to find out the hard way, but I'm going to play it safe. I think I'd be ok with 2.67 (4+8) as that's prolly all I'd ever need anyway, but I doubt I'll ever try 2, and 90% of the time I'll be at 8 or 4 anyway. I'd bet It's loud enough for me at 4, but I'll be able to tell y'all for sure after tomorrow's gig.