Bogen HFSF1 High-Fidelity Small-Footprint Ceiling SpeakerThe Bogen HFSF1 High Fidelity, Small Footprint Ceiling Loudspeaker delivers superior sound in a very compact enclosure. The speaker measures 7 1 4" diameter and mounts easily in all types of ceilings including existing hard surfaced types and suspended type. Several levels of power output can be controlled directly from the front baffle via a rotary tap selector switch under the grille. The low distortion, coaxial design speaker, coupled with a