[Weasel9992]

Are they soffit-mount mains or just regular monitors that you want to install in a soffit? Either way, it may not be a job you want to take on yourself. There's a lot to it...lots of things have to be done right to avoid turning the wall into a big resonance chamber or overheating the monitors...also issues with providing power to the monitors, not destroying monitor dispersion, etc.

Frank