This module may be used in conjunction with other RDL modules to configure automatic mixing systems or may be used alone as a single speaker monitor amplifier. The ST-MA2 is typically used to drive a small tabletop or overhead monitor speaker in a conference room, boardroom, courtroom, public forum panel or similar installation. The ST-MA2 is ideally suited for use in automatic mixing systems due to its control inputs. The line-level input may be wired balanced or unbalanced. The audio output will drive standard speakers from 4 to 45 ohm.
Normal gain is preset by means of a trimmer on the module.
Five control inputs are provided. An open-collector, a switch closure, or compatible logic signals may activate each. Typically, an RDL ST-GSP1 Gated Speech Preamplifier controls these inputs. There is a control input which mutes the ST-MA2 output completely. This may be used to prevent feedback if there is a pickup mic associated with the speaker driven by the ST-MA2.