Acoustimass 3 Series III
Bose 5.1 Speakers Passive and Active
Here we have the Bose Acoustimass systems, these are a speaker only system for use with a third party amplifier Yamaha etc. The Acoustimass 6 series I and II, Acoustimas 10 series I and II. These are known as passive systems, this means they take all of their power from the amp. They use speaker wire 5 into the bass module and 5 out to the cubes. The Acoustimass 5 series III, Acoustimass 10 series III and IV. The Acoustimass 15 series all models. These are known as active systems. They still use a third party amp, however the subwoofer is now powered from an internal amplifier, giving far more bass and better control overall.