Hi folks, I'm sure this is obvious to most but,,, I'm unclear if it's ok to connect an 8 ohm cab to the extension jack on my DRRI with the internal speaker still conected. If I understand correctly this would provide a 4 ohm load to the OT? I've been searching around this morning without luck. The manual was not clear (at least to me) about this? Any help would be great. Thanks, Mike.