Audiosphere (abstract) S-2.1 speakers Good condition, very solid condition, sound great! Abstract (audiosphere) Acoustics was a Toronto based speaker manufacturer that used Canadian made drivers sourced from Cambridge, Ontario. This model features a one inch (25.4mm) dome tweeter and an eight inch (150mm) poly-cone woofer with a massive magnet . (original drivers). Rock solid construction, internal bracing. 8 ohms Dimensions ~ H23.5" x W10.375" x D12.5" Have butyl rubber surrounds on the woofers. Sound is outstanding with clear and punchy bass. A fine example of Canadian ingenuity ... *Stands not included*