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00V Line Public Address Amplifier

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.
FeatureSpecification
ModelLA-250V
Product Type100V Line PA Amplifier
Output Power250W RMS
Output Voltage Options100V / 70V / 4–16Ω
Inputs3 × Mic (6.3mm Jack), 2 × AUX (RCA)
Mic 1 PriorityYes, with Auto Mute
Tone ControlBass ±10dB, Treble ±10dB
Cooling SystemTemperature-Controlled Fan
ProtectionShort Circuit, Overload, Overheat
IndicatorsPower, Signal, Peak, Protect
Mounting2U Rack-Mountable
HousingHeavy-Duty Metal Enclosure
Power SupplyAC 220–240V, 50/60Hz
Dimensions484 × 385 × 88 mm
WeightApprox. 12.5 kg
Warranty2 Years

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.

Application

    • 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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