Atlas Sound Strategy PM4FA-W 25 W RMS Speaker - 2-way - WhiteOverview Specifications Model PM4FA W uses the familiar response and dispersion of Atlas Sound's model FA134 high performance 4" Strategy Series driver. This loudspeaker is the same FA series device used in Atlas Sound's popular FAP42T in ceiling speaker package. Mounted down firing in an attractive enclosure, the PM4FA provides natural sounding, wide coverage for low height installations while retaining very impressive full range frequency response