CALL US

Zoned Audio Amplifiers 3-ZA20A 3-ZA40A 3-ZA95

blog
blog

Gallery Images

blog
blog

Zoned Audio Amplifiers 3-ZA20A 3-ZA40A 3-ZA95

The EST3 audio amplifiers take full advantage of proven digital technology to deliver highly intelligible voice audio for evacua tion and Mass Notification/Emergency Communication (MNEC) purposes. Digital messages generated by the Audio Source Unit (ASU) and live paging messages are multiplexed into eight separate channels transmitted over fiber optic cable or a single twisted pair of wires. Each zoned amplifier contains integrated de multiplexing circuitry that allows any one of the eight digital audio channels to place messages or signals on the amplifier’s built-in speaker circuit. Audio channel selection is network software controlled, and audio amplifiers mount in the same enclosures as other EST3 equipment. Power for the amplifiers comes from standard sys tem power supplies through the local rail. Field wiring connects to removable terminal blocks on the amplifier module. Amplifiers support either 25 VRMS or 70 VRMS power limited speaker circuits. For visual signaling, each 20 or 40 watt amplifier comes standard with one 24 Vdc power limited Notification Appliance Circuit.
Contact Now Contact Now
  • Three Sizes Available -20 Watts -40 Watts -95 Watts
  • Simultaneous eight channel digital audio – Superior sound quality – Each amplifier does it’s own decoding
  • Speaker circuit built into amplifier – Selectable for 70 or 25 VRMS output – Class A or Class B output – Power limited
  • 3.5 amp 24 Vdc notification appliance circuit
    on 20 and 40 watt amplifiers – Class A or Class B output – Power limited
  • Network software control of channel selection
  • Integral backup tone generator – 1 KHz temporal (3-3-3) tone evac
  • Part of an end-to-end 520 Hz signaling solution – UL approved for use in sleeping rooms
Manual Manual
3-ZA20A 3-ZA40A 3-ZA95
Agency Listing UL, ULC, CE, EN54
EN 54-2: 1997 + A1: 2006, EN 54-4: 1997 + A1: 2002 + A2: 2006, and EN 54-16: 2008		 UL, ULC
Environmental 0°C – 49°C (32°F – 120°F) 93% RH, Non-condensing
Frequency Response 400Hz to 4KHz @ +/- 3dB
Output Voltage 25 VRMS or 70 VRMS
THD (distortion) < 7%
Wire Size 18 to 12 AWG (1.0 to 2.5 mm²)
Internal Tone
Generator		 1KHz Temporal (3-3-3) Tone (evacuation); 20 PPM (alert)
SIGA-CC1/2 Support 10 Units, Maximum
Standby Current 62mA for 20 and 40 watt amps;
85mA for the 3-ZA95 watt amp
Alarm Current 1120mA 2480mA 5540mA
Pwr. Ltd. Audio Output Wiring Configuration
EOL Resistor		 Class A or B
15K Ohms in Class B		 Class A or B
15K Ohms in Class B		 Class A or B
15K Ohms in Class B
Pwr. Ltd. 24 Vdc NAC Wiring Configuration
Line Resistance, Max.* EOL Resistor Line Capacitance, Max		 Class A or B
50 Ohms, Max.
N/A 0.33µF		 Class A or B
50 Ohms, Max.
N/A 0.33µF		 N/A
Space Requirements 1 LRM Space 2 LRM Spaces
Note: *For EN 54-2: 1997 + A1: 2006, EN 54-4: 1997 + A1: 2002 + A2: 2006, and EN 54-16: 2008 compliant product add suffix -E to model eg. 3-ZA20A-E.
Maximum Speaker Circuit Distance at 0.5 dB loss*
70 VRMS Output 3-ZA20A 3-ZA40A 3-ZA95
#12 AWG
(3.2 Ohm/1000 ft pair)		 4,536 ft (1,382 m) 2,268 ft (691 m) 955 ft (290 m)
#14 AWG
(5.2 Ohm/1000 ft pair)		 2,792 ft (850 m) 1,396 ft (425 m) 588 ft (179 m)
#16 AWG
(8.0 Ohm/1000 ft pair)		 1,815 ft (553 m) 907 ft (276 m) 382 ft (116 m)
#18 AWG
(13 Ohm/1000 ft pair)		 1,117 ft (340 m) 558 ft (170 m) 235 ft (71 m)
25 VRMS Output 3-ZA20A 3-ZA40A 3-ZA95
#12 AWG
(3.2 Ohm/1000 ft pair)		 579 ft (176 m) 289 ft (88 m) 122 ft (37 m)
#14 AWG
(5.2 Ohm/1000 ft pair)		 356 ft (108 m) 178 ft (54 m) 75 ft (22 m)
#16 AWG
(8.0 Ohm/1000 ft pair)		 231 ft (70 m) 116 ft (35 m) 49 ft (14 m)
#18 AWG
(13 Ohm/1000 ft pair)		 142 ft (43 m) 71 ft (21 m) Not supported
by 18 AWG

Related Products

No Project Found