Impedance-Matching Speaker Switching System

The AST-6 speaker switching systems include an impedance protection circuit that operates in pairs, allowing each set of speakers to operate directly and simultaneously from the amplifier for maximum efficiency. The left and right channels are completely isolated for protected operation. The AST-6 is 17" W x 15⁄8" H x 57⁄8" D (432 x 41 x 149mm) and can be shelf or 19" rack-mounted, with supplied brackets. Features Euro-style screw terminals that will facilitate 12 to 24-gauge wire, push-button on/off controls for each connection, and attractive mar-resistant black finish. The AST-6 provides overall A or B system selection, but does not include volume controls.


AST-6 provides for switching control of six speaker pairs, and will accommodate any combination of 8 and/or 16 Ohm speakers. Model AST-6 also features a switch for safe connection of 4 ohm speakers. AST devices include separate on/off controls for each speaker pair and one A-B source selector switch for overall system control. Speaker volume can be adjusted using individual room volume controls such as the AtlasIED DAT-8 or SAT-8 Series (not included). AST-6 has a power handling capacity of 40 watts RMS*/120 Watts audio.