An illustrative light fixture providing a desired spot light pattern diameter at a given distance includes a planar light emitter providing a light source and forming a first plane, and concentric conical frustum reflectors, the first reflector having a proximate end coplanar with the first plane and the second reflector having a proximate end distal of the first plane. A first inverter, the input end of the first inverter connects to the signal input point. The base of the locator is formed with holes and riveted to the outer track.