Eltax Active speaker and subwoofer (Surrenden BN1)

Eltax Active speaker. Powers up and can hear the speaker thump. Unable to test further. Comes from the clearance of unrealised third party studio project and I have no prior knowledge of the equipment. Doesn't have the model type on the case but looking online it is either a Thunder or an Atomic I reckon. Has one broken leg (out of four) (see photos)