[quote name='Deep Thought' post='80553' date='Oct 28 2007, 07:43 PM']Ok forgive me if this is a silly question, I was never any good at this sort of stuff. I have two combos, an Ashdown Mag 300 4x 10, and a Trace Elliot 7215 SMC 1 x 15, which was originally intended to replace the Ashdown. However since I still have both here to hand, I have hatched the plan of hooking them up together to give me some more wallop onstage. Both are 300 watt (although I'm told the Trace only produces 200 through the onboard speaker and 300 when a cab is used, although there's no mention of that in the manual) and both take a minimum 4 ohm cab. Can I do this, how exactly, and is there any disadvantage other than the obvious weight/size issues? Thanks.[/quote]
Both the Ashdwon and the Trace will be ~200W into the 8ohm internal speakers, 300W into a 4ohm load. So to ge tthem both operating at 300W you'd need two extention cabs anyway. However, using them both at 8ohms will already be increasing your air movement so will certainly help!
To link 'em together, take the line out from one and stick it into the input of the other. Or split the signal before the amps... Have fun, should sound nice