Im making an explodable wall with all the usual trimmings, shake, timer, breakable, and hopefully sound. I have set it all up and works fine, with the multi_manager handling it all. What I'm after is just a little bang sound when it blows up, however I can't find an entity that fits. Which do I use to play a sound? Trigger_sound is a brush based one, and func_sound is something else I think...

ambient_generic will do the trick (not a brush-based entity).