A 250 Watt IP amplifier with metal housing.
Product Description:
The AF 250H provides a high output range and various connections from a microphone input to a relay output. That’s why the amplifier is universally suitable for any size of application – even for complex public address and Intercom solutions. In order to avoid cabling costs and be more flexible, the AF 250H is specifically optimized for installation either in a 19” rack or on-site.
Product Features:
- 250 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 metal housing
- Line monitoring between amplifier and Intercom Server
Technical Specification:
| IP Rating | IP20 (acc. EN 60529) |
| Output power | 250W RMS |
| Power supply | AC main power supply: 100–240 VAC (50–60 Hz, max. 340 W)DC backup power supply: 24 VDC (21–28 VDC, max. 13 A) |
| Average power consumption(acc. to IEC-60268-3) | idle mode: 28 W (AC main power supply),17 W (DC backup power supply)active mode (1 kHz sine @ −10 dB): 59 W (AC main powersupply), 43 W (DC backup power supply) |
| 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 specification | ONVIF Profile S for unidirectional audio |
| IoIP audio bandwidth | 16 kHz |
| SIP audio bandwidth | 7 kHz |
| Total harmonic distortion (THD+N) | < 0.2% at 1 kHz sine at 250 W |
| Signal-to-noise ratio (SNR) | amplifier: > 108 dBcodec G.722: > 82 dB |
| Cabling | min. Cat. 5 |
| Connection | 2 RJ45 modular jacks (IP uplink and IP downlink)outputs, inputs, microphone 3), line out: pluggable screwterminals (0.08–1.5 mm2/AWG 28–16)loudspeaker output: pluggable screw terminals(0.75–4 mm2/AWG 20–12, class 2 wiring)AC main power supply (IEC-60320-C14)DC backup power supply: 1.5–6 mm2/AWG 16–10,external fuse with 15 A |
| Loudspeaker output | 100 V, switchable to 70 V via software |
| Microphone input | sensitivity: −43 dBV/Pafeeding voltage: 2.5 V at 3.3 kΩ |
| Line output | nominal level 0 dBu (0.775 V) |
| Inputs | 2 inputs for floating contacts(detection of 5 input states) |
| Outputs | relay output (changeover contact): max. 60 W (DC)/37.5 VA (AC), max. 2 A 4), max. 60 VDC/30 VACeffexpected life: min. 105 (30 VDC/2 A), 5 x 105 (30 VDC/1 A) |
| Control input | 0 – 10 V (for remote volume control) |
| Operating temperature range | −10 °C to +55 °C (+14 °F to +131 °F) |
| Storage temperature range | −25 °C to +70 °C (−13 °F to +158 °F) |
| Relative humidity | up to 95%, non-condensing |
| Approvals and compliances | EN 61000-6-2, EN 61000-6-3, EN 55032 Class B,EN 55024, EN 60529 IP20IEC/EN/UL 62368-1 and CB-Scheme (by UL)UL LISTED, FCC Part 15 Class B, ICES-003 Class B |
| Dimensions (W x H x D) | 401 x 44 x 267 mm (15.79 x 1.73 x 10.51 in) |
| Weight incl. package | approx. 3,700 g (8.2 lbs) |