LED Display Builder
100V line amplifiers
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Key Features
- Constant Voltage Output (100V/70V): Designed to drive distributed speaker systems over long distances.
- Multiple Zone Output (in some models): Independent control of audio in separate areas.
- High Impedance Speaker Support: Drives many speakers in parallel without matching impedance manually.
- Input Versatility: Supports mic, line, AUX, and sometimes USB/Bluetooth inputs.
- Overload & Short-Circuit Protection: Built-in safety features for system reliability.
- Rack Mountable or Wall Mountable: Easy integration in commercial AV setups.
- Paging Mic Priority (in some models): Automatically ducks music when a mic signal is detected.
- LED Indicators: Show signal presence, clipping, and protection status.
Brief Description
100V line amplifiers (also known as constant voltage amplifiers) are specially designed audio amplifiers used in public address (PA) and commercial audio systems. Instead of delivering audio at standard speaker-level voltages, they transmit audio signals at a constant voltage (typically 100V, sometimes 70V), allowing efficient distribution of audio over long cable runs to multiple loudspeakers with minimal loss and simpler wiring.
Technical Specifications
(May vary depending on brand and application, e.g., TOA, Bosch, Ahuja, Monacor, etc.)
| Feature | Typical Specification |
| Output Voltage | 100V / 70V / 25V line (selectable) |
| Power Output | 30W – 1000W RMS (model dependent) |
| Frequency Response | 50 Hz – 15 kHz (suited for voice and background music) |
| Inputs | 1–4 Mic inputs, Line in, Aux in, USB/SD (varies) |
| THD (Total Harmonic Distortion) | < 1% at rated output |
| Controls | Volume per channel, bass/treble EQ, master volume |
| Cooling | Fan or convection-cooled |
| Protection Features | Overload, short circuit, thermal, DC output protection |
| Power Supply | AC mains (typically 110–240V), some with 24V DC backup |
| Mounting Options | 19” rack mount, desktop, or wall-mount |
Applications
- Public Address Systems: Ideal for large buildings, schools, hospitals, factories, and airports.
- Background Music Systems: Hotels, retail stores, malls, and restaurants.
- Emergency Evacuation Systems: Used in conjunction with voice alarm systems.
- Houses of Worship: Distributes audio to multiple rooms or outdoor areas.
- Outdoor Audio Systems: Parks, sports grounds, or large campus environments.
- Offices & Corporate Buildings: Paging, announcements, and background music.
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