[quote name='citymariner' post='1072948' date='Dec 30 2010, 05:52 PM']Can you explain this a little further/point me to a thread that does - I think I know what you're going to say but not secure enough to say it.
I've heard of 10's and 15's being a big 'no no' due to the risk of being out phase but then seeing so many people use the setup (and some being using the setup as me) it led me to believe it is folklore - however my electronics and music tech qualifications (although they feel pretty useless at the moment) tell me that there must be some truth in it thanks to good old subject physics![/quote]
It's not about the mixing of the speakers at all, it's just that if the 15"speaker is wired the opposite way to the combo the two cabs will tend to cancel each other out, in other words if the 10" cones are going forward, the 15 will be going backwards. If the socket on the cab, or the speaker or cable are wired wrong, this could happen.