The Sub series is designed for applications that call for increased impact and low frequency performance to the Optimal Audio loudspeaker range.

An impact-resistant perforated steel grille protects the driver in each case, and rubber feet on the base resist movement.

The enclosures are constructed from wood and finished in black or white (Sub 6 only) textured paint.

They can be installed on the ground, fixed to a wall or ceiling or flown.

When coupled with Zone and WebApp, system set up and end user control is easy, and can be further supplemented by ZonePad wall controllers.