Gradient of Finland ‘Revolutions are assembled ,this pair is their ‘active’ version , the amplifiers and crossovers are in a separate unit, four pole ‘speakon’ connectors run to each speaker , two inputs to the SW ( sub woofers) and two to the main speaker.
The Revolutions have dipole ( figure of eight ) radiation, allowing the bass units to be turned to minimise standing wave interaction.
The head unit is a coaxial mid/tweeter with a cardioid response, similar to their latest Gradient 1.4 model.
Keith