Acoustic Bass

Nope, that won't work at all. The volume that you'll get from the bass unplugged using acoustic strings will not change. Acoustic basses sound loud on their own because of the big, hollow body they have. Electric basses are thick pieces of wood and can't produce any loud sounds on their own.

Not only that, but your electric bass may not work with an amplifier if you use acoustic strings. The pickups on an electric bass have a magnetic field, and you need to use stainless steel or nickel strings for them to work. Acoustic strings are phosphor bronze, and the pickups won't be able to pick up their sound.