I have owned the CB3 for approx. 5 months now, and i love it more and more every day. My only issue is voice intelligability at lower levels. Somebody recommended turning the center spread to +10...Is that the answer? Any other advice?...

Just so you know....i'm using the Dread2 with 3x250 and 2x100
m&k 150's for the front 3...and extreme dacs in the cb3 with the 6 shooter as well...

Often - The room reflections can be the cause of a lot of nasties affecting dialog intelligibility.
Where you sit in the room, speaker directivity and placement, room treatment, level matching can all be factors in the resultant system response.

Level match all speakers / zero out sidewall and rearwall reflections and try again.

Certainly you can bump the center channel gain and that may satisfy - sure easy to try.

Ah, I misread -- center channel spread meaning give more center channel feed to BOTH L&R mains ? Yikes - not my cup of tea - but easy to try eh?