Edwards SIGA-AA50 50W Intelligent Audio Amplifier with Dual Input and 25/70 VRMS Output
Edwards EST · Industrial Automation & Electrical
Description The Edwards SIGA-AA50 is an intelligent 50 W audio amplifier designed for emergency voice evacuation and mass notification systems. Featuring dual audio inputs and selectable 25 VRMS or 70 VRMS speaker outputs, it provides reliable audio amplification for compatible Edwards fire alarm and life safety systems. The amplifier is engineered to deliver clear voice messaging and emergency tones in commercial, institutional, and industrial applications. Technical Specifications Condition New/Never Used Surplus Brand Edwards Category Flame Safety Products Part Number SIGA-AA50 Subcategory Flame Safety Amplifier Output Power 50 W @ 25 VRMS or 70 VRMS Input Channels 2 (dual input supported) Input Levels 1 VRMS or 25 VRMS maximum Voltage 24 VDC Current – Standby 2 mA @ 24 V Current – Active 2.8 A @ 24 V full load Frequency Response 800 Hz to 2.8 kHz (ULI), 400 Hz to 4 kHz (ULC) Harmonic Distortion < 5% Configuration Class B (Style Y) or Class A (Style Z) EOL Resistor 47 kΩ Compatible Enclosures APS6A, APS10A Compatible Power Sources System power, BPS6A/10A, APS6A/10A Signature Data Circuit 2 module addresses, Signature Series CC2 Maximum Wire Size 12–18 AWG (0.75–2.5 mm²) Backup Tone 1 kHz onboard generator Operating Temp 32 °F to 120 °F (0 °C to 49 °C) Relative Humidity 0 to 93%, non-condensing Weight 1.88 lbs Information About SIGA-AA50 The SIGA-AA50 is part of the Edwards Signature amplifier family, engineered for high-efficiency audio distribution in fire alarm voice evacuation systems. It connects directly to the Signature data circuit, allowing channel switching and amplifier monitoring through system software without additional control modules. Designed with two audio inputs, it accepts either line-level (1 VRMS) or amplified (25 VRMS) signals, offering flexibility in project design. Backup is supported either through dedicated amplifiers or by utilizing the onboard 1 kHz tone generator, which activates in case of input failure. The unit is housed in APS6A or APS10A enclosures and operates on 24 VDC system power or dedicated supplies. Key Features: High Power Output: Delivers 50 watts at 25 VRMS or 70 VRMS. Dual Audio Inputs: Accepts 1 VRMS line level or 25 VRMS amplified input signals. Signature Data Circuit Control: Enables software-based channel switching without extra modules. Integrated Backup Options: Supports backup amplifier connection or automatic 1 kHz tone generator. Low Distortion Performance: Harmonic distortion rated at less than 5%. Flexible Configuration: Operates in Class B (Style Y) or Class A (Style Z) wiring. System Supervision: Communicates amplifier status directly to the main control panel. Rugged Installation: Compatible with APS6A and APS10A enclosures for secure mounting. UL/ULC Listed: Meets stringent standards for fire and life safety systems. Wide Operating Range: Functions in temperatures from 32 °F to 120 °F and up to 93% RH. The SIGA-AA50 delivers the output power, flexibility, and supervision required for emergency communication and life safety applications.
Brand: Edwards EST · Category: Industrial Automation & Electrical
Key features
- High Power Output: Delivers 50 watts at 25 VRMS or 70 VRMS.
- Dual Audio Inputs: Accepts 1 VRMS line level or 25 VRMS amplified input signals.
- Signature Data Circuit Control: Enables software-based channel switching without extra modules.
- Integrated Backup Options: Supports backup amplifier connection or automatic 1 kHz tone generator.
- Low Distortion Performance: Harmonic distortion rated at less than 5%.
- Flexible Configuration: Operates in Class B (Style Y) or Class A (Style Z) wiring.
- System Supervision: Communicates amplifier status directly to the main control panel.
- Rugged Installation: Compatible with APS6A and APS10A enclosures for secure mounting.
- UL/ULC Listed: Meets stringent standards for fire and life safety systems.
- Wide Operating Range: Functions in temperatures from 32 °F to 120 °F and up to 93% RH.
Specifications
| Manufacturer part number | SIGA-AA50 |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Edwards |
| Category | Flame Safety Products |
| Part Number | SIGA-AA50 |
| Subcategory | Flame Safety Amplifier |
| Output Power | 50 W @ 25 VRMS or 70 VRMS |
| Input Channels | 2 (dual input supported) |
| Input Levels | 1 VRMS or 25 VRMS maximum |
| Voltage | 24 VDC |
| Current – Standby | 2 mA @ 24 V |
| Current – Active | 2.8 A @ 24 V full load |
| Frequency Response | 800 Hz to 2.8 kHz (ULI), 400 Hz to 4 kHz (ULC) |
| Harmonic Distortion | < 5% |
| Configuration | Class B (Style Y) or Class A (Style Z) |
| EOL Resistor | 47 kΩ |
| Compatible Enclosures | APS6A, APS10A |
| Compatible Power Sources | System power, BPS6A/10A, APS6A/10A |
| Signature Data Circuit | 2 module addresses, Signature Series CC2 |
| Maximum Wire Size | 12–18 AWG (0.75–2.5 mm²) |
| Backup Tone | 1 kHz onboard generator |
| Operating Temp | 32 °F to 120 °F (0 °C to 49 °C) |
| Relative Humidity | 0 to 93%, non-condensing |
| Weight | 1.88 lbs |
| Product type | Flame Safety Amplifier |
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