The ELK-44 is a universal 30 Watt - 8 Ohm Speaker which may be connected to any siren driver or amplifier. It features a heavy duty voice coil and magnet, allowing it to withstand up to 50 Watts of peak power. The ELK-44's removable "U" shaped mounting bracket makes installation quick and simple. It's small and compact size allows it to be placed in vents, attic eaves and soffits, and other unique locations where large and bulky units will not fit.