AF 50 – 50 Watt Amplifier

A 50 Watt amplifier with polycarbonate housing.

Product Description:

The AF 50H provides a particularly high output range and various loudspeaker outputs. The amplifier is universally suitable for any size of application up to complex public address and Intercom solutions. It is specifically optimized for installation either in a 19” rack or on site. This helps to save on cabling and any costs incurred.

Product Features:

  • 50 watts total output power
  • Supports IoIP and SIP
  • 70 V/100 V audio output with loudspeaker line monitoring
  • Class-D amplifier, optimized for high efficiency at low operating temperatures
  • Short-circuit- and overload-proof
  • Installation in a 19” rack or on-site
  • Suitable for decentralized on-site use
  • Rugged polycarbonate housing
  • Line monitoring between amplifier and Intercom Server
  • Can be used as an interface to PA systems
  • Low impedance audio output; min. impedance: 4 Ω

Technical Specification:

IP RatingIP20 (acc. EN 60529)
Output power50 WRMS
Loudspeaker outputslow-resistance (min. impedance: 4 Ω) or 70 V/100 V
Microphone inputnominal level: 14 mV at 3.3 kΩmicrophone supply voltage: 2.5 V
Line inputnominal level: 0 dBu (0.775 V)
Inputs2 inputs for floating contacts(detection of 5 input states)
Outputrelay output (changeover contact):max. 60 W (DC)/ 37.5 VA (AC),max. 2 A,max. 60 VDC/ 30 VAC effexpected life: min. 5 x 104 (2 A), 105 (1 A)
Control input0–10 V (for remote volume control)
Protocols (lolP)IoIP protocol based on UDP/IP
Protocols (SIP)IPv6,IPv4, TCP, UDP, HTTP (RFC 2617, RFC 3310),RTP (RFC 3550), RTCP, DHCP, SDP (RFC 2327),SIP (RFC 3261), SNMPv2, STUN, TFTP, URI (RFC 2396),DTMF Decoding (RFC 2876, RFC 2833),SIP User Agent (UDP RFC 3261),SIP Refer Method (RFC 3515)
Codecs (SIP)G.711 a-Law, G.711 μ-Law, G.722
ONVIF specificationONVIF Profile S for unidirectional audio
IoIP audio bandwidth:16 kHz
SIP audio bandwidth:7 kHz
Total harmonic distortion (THD+N):4 Ω, 8 Ω, 70 V/100 V: < 0.2%
Operating temperature range:−25 °C to +55 °C (−13 °F to +131 °F)
Storage temperature range:−25 °C to +70 °C (−13 °F to +158 °F)
Relative humidity:up to 95%, not condensing
Connections:2 RJ45 modular jacks with LEDs for connection tothe Intercom/SIP server (IP Uplink, IP Downlink)pluggable screw terminals (0.08 mm2– 1.5 mm2):power supply, outputs, microphone 1), inputs,line output, 70 V/100 V loudspeaker outputpluggable screw terminals (0.08 mm2– 2.5 mm2):low-resistance loudspeaker outputexpansion plug for e.g. EB2E2A
Power supply:20 –26 VDC(max. 2.6 A at 4 Ω/50 W or max. 1.3 A at 8 Ω/25 W,max. 3 A at the 70 V/100 V loudspeaker output)or PoE
PoE (Power over Ethernet) 3):IEEE 802.3af/Class 0, IEEE 802.3at/Type 1
Cabling:min. Cat. 5
Dimensions (W x H x D):201 x 44 x 255 mm (7.91 x 1.73 x 10.04 in)
Weight incl. package:approx. 1,600 g (3.53 lbs)
COMMENDAudio-Video Intercom & PA-BGM
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