Description
The Algo 8373 gives your team an easy, cost-effective way to modernize paging without ripping out existing infrastructure. It turns one traditional amplifier into three independent zones you can page individually or together – all controlled from any SIP phone or UC platform. Whether you’re making daily announcements or emergency alerts, the wideband audio stays crystal clear with zero hum or noise thanks to the isolated line output.
The Telecom Spot Expert Take: If your organization still relies on an old analog PA system but wants the reliability and flexibility of modern VoIP, the Algo 8373 is the smart bridge you’ve been looking for. It eliminates the hassle (and cost) of legacy zone controllers, FXS ports, and ATAs while adding true zone control and multicast scalability. IT managers love how simple the web interface is to configure, and facilities teams appreciate that they don’t have to touch the amplifiers or speakers. Real-world result? Faster announcements, clearer audio, and a future-proof system that grows with your needs – all at a fraction of the cost of a full IP speaker replacement.
Key Features
- Three independent paging zones from a single amplifier – page one area, two areas, or all three at once without extra hardware.
- Isolated balanced line output (XLR or terminal block) eliminates hum and noise while matching any amplifier input from 600 Ω to 10 kΩ.
- Dry contact closure automatically activates the amplifier exactly when needed – no extra wiring headaches.
- Wideband G.722 HD voice delivers clear, intelligible announcements every time – far better than narrowband legacy systems.
- SIP endpoint with up to 50 page extensions – dial directly to a zone or use one extension with simple DTMF keypad selection.
- Multicast send/receive – stream audio to other Algo speakers, strobes, or additional 8373 units for campus-wide coverage with minimal network traffic.
- PoE powered (IEEE 802.3af) – one cable does it all; no local power outlet required.
- Easy wall-mount installation – brackets included, compact size fits anywhere in your rack or closet.
Technical Specifications
- Power: PoE IEEE 802.3af Class 0 (max 4 W, idle 2 W)
- Audio Output: Isolated balanced line level (-10 dBm / 0 dBm / +4 dBu selectable); XLR-mini + terminal block
- Zones: 3 high-current internal relays (up to 500 W @ 70 V or 720 W @ 100 V)
- SIP: Up to 50 page extensions; UDP/TCP/TLS, SRTP, G.711, G.722 wideband
- Multicast: RTP (50 zones), Polycom Group Page compatible
- Dimensions: 6.75″ × 4.3″ × 1.18″ (17.2 × 10.9 × 3.0 cm)
- Weight: 0.95 lb (0.43 kg)
- Mounting: Wall-mount bracket included
- Environment: Dry indoor use only, 32–104 °F (0–40 °C)
- Compliance: UL/CSA, FCC, CE, RoHS
Please see Algo 8373 Datasheet and Algo 8373 vs 8301 for more information.