Federal Signal Models 304GCX and 314GCX Hazardous Location Amplified Speakers are designed to produce crisp, clear tones in supervised alarm notification systems. Both speakers amplifiers are compatible with fire alarm, voice evacuation, suppression supervised control panels and power boosters.

These amplified speakers can broadcast tones generated by a Tone Card installed into the speaker (the plug-in 32-tone UTM*) or by a central tone source in a voice evacuation or paging system. When live public address or voice messages are required, plug-in Connector Cards (AM25CK or AM70CK) interface with the audio output of the EVAC panel. 

The speaker cone and projector are constructed of rugged spun aluminum. The solid-state amplifier circuit is protected in a die-cast aluminum housing. Dust and moisture-proof gaskets provide protection from the elements. All external surfaces are sealed with gray powder coat paint. The 304GCX and 314GCX are easily installed with external mounting tabs.

The rugged construction and high output of the Model 304GCX and 314GCX make it ideal for use in harsh environments with high ambient noise levels. 

*ULC Canadian Fire Listed Models (-CN models) can only be used with a UTM tone card


Voltage 24VDC  
Operating Temperature -40°F to 150°F -40 °C to 66°C
Enclosure Rating Type 4X  
  304GCX 314GCX
Operating Current 0.7 amps 1.3 amps
Standby Current 0.15 amps 0.15 amps
Decibels per UL1480 95 @ 10' (105 @ 1M) 108 @ 10' (118 @ 1M)
Decibels on Axis 108 @ 10' (118 @ 1M) 112 @ 10' (122 @ 1M)
Net Weight 4.5 lbs (2.0 kg) 6.1 lbs (2.8 ks)
Heights 12.4" (314mm) 13.9" (353mm)
Width 7.9" (200mm) 10.2" (258mm)
Depth 8.5" (216mm) 9.9" (252mm)

Ordering Information

Model Types
Model Description UPC
304GCX-024 SelecTone, 24VDC, hazardous location, UL, gray 782979208389
304GCX-024-CN SelecTone, 24VDC, hazardous location, ULC, gray 782979221418
304GCX-024-CN-R SelecTone, 24VDC, hazardous location, ULC, red 782979233428
314GCX-024 SelecTone, 24VDC, high-power, hazardous location, UL, gray 782979208358
314GCX-024-CN SelecTone, 24VDC, high-power, hazardous location, ULC, gray 782979221432
314GCX-024R SelecTone, 24VDC, high-power, hazardous location, UL, red 782979226123
UTM Universal tone module 782979202172
AM25CK Connector card, 25vrms 782979600855
AM70CK Connector card, 70vrms 782979600862
Replacement Parts
Description Part Number UPC
4-Position power plant board assembly K140340B 782979112969
Voice coil, Series C K8593035A 782979121138
Speaker assembly, 15 watt, 4X, grey K8593082A 782979122531