|Company||Federal Signal Corporation|
|Sound output||111-121 dBc at 100 feet|
The DSA, short for Directional Speaker Array, is an electronic siren produced by Federal Signal Corporation. It it comprised of speaker modules that vertically hold two to six speakers with projectors. Up to four can be installed on a mount, and at different angles, depending on coverage requirements. The DSA can be mounted on 3 different pole mount models, the DSAMK1 which holds 1 module, the DSAMK2 which holds 2 and the DSAMK4 which holds 4.
Each speaker module has its own model number and output rating according to the number of speakers it has. There can be up to 4 different models on the same mount. The models are as follows.