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> New federal signal loudspeaker 50 fire alarm AM50 A1 a+
New federal signal loudspeaker 50 fire alarm AM50 A1 a+
The Federal Signal 50 is a compact, two-watt, tranformer coupled speaker for use in public address or paging applications. The unique design of this 4" square speaker centers around the short, folded, re-entrant horn that is interposed between the diaphram and the surrounding space.
