Well, by way of an update….
Rehearsed the rig last night, and as I feared, the horn blew. Not a massive issue, new one ordered, no problem.
The amp was set flat (EQ all at 12 o’clock) with the gain and master volume around 1 o’clock, so not driving it that hard in my opinion, the horn was also set at 12 o’clock. Two songs in, the horn goes.
New horn on the way.
So my questions now are……if I turn the horn level down, is it still going to overload? ….. and should I just be looking for 2x 8ohm cabs that can handle 500W at 4ohms…… or should this 4ohm cab rated at 350W be able to handle it?