Lowell Manufacturing PA250A 250W Power Amplifier

SKU: LWPA250A MFR: PA250A
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Key Features

  • Deliver powerful audio with this 250W power amplifier, perfect for PA systems.
  • Achieve crystal-clear sound with a low Total Harmonic Distortion for pristine audio.
  • Enjoy versatile connectivity with 4 Ohms, 25V, and 70V speaker level outputs.
  • Ensure reliable performance with built-in protection circuits for long-term use.
  • Easily integrate with balanced TEL-PAGE and 600 Ohms inputs for seamless setup.
  • Monitor performance with helpful LED indicators for power and peak levels.
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Special Order?Estimated to Ship: 08/16/2025
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Lowell Manufacturing PA250A Specifications

  • AC Supply Voltage

    115/230VAC (switchable) 60Hz +/-10%, 5A circuit breaker

  • Power Consumption

    480W at rated power

  • Power LED (green)

    Green LED lights when product is receiving power

  • Speaker Level Outputs

    Screw terminal strips, 4 ohms, 25V, 70V, 250W RMS (4 ohm output into 8 ohm load delivers 200W RMS)

  • Peak LED (red)

    If peak LED flashes red, it indicates peaks are approaching full power. Steady red light may indicate the amplifier is being over-driven, there is sub-sonic or ultra-sonic oscillation in the system, or the amplifier is loaded with a shorted speaker line

  • TEL-PAGE Input

    Screw terminals, 50mV at 600 ohms balanced (required for full rated output power)

  • 600 Ohms Input

    Screw terminals, 500mV at 600 ohms balanced (required for full rated output power)

  • Frequency Response

    20Hz-20kHz +/-3dB (4 ohms direct output, any input to any output)

  • Total Harmonic Distortion

    <=0.3% at 1kHz at rated power (4 ohms direct input)

  • Hum and Noise

    >=90dB below rated output (unweighted)

  • Dimensions (WxHxD)

    19 x 3.5 x 12.5" (48.26 x 8.89 x 31.75cm)

  • Weight

    18 lbs (8.16kg)

About Lowell Manufacturing PA250A

Overcome the limitations of your audio setup with the PA250A 250W Power Amplifier, a robust and high-quality solution designed to deliver powerful and clear sound. This advanced amplifier is engineered to provide a continuous RMS power of 250 watts directly to a 4-ohm speaker load, ensuring that your audio is projected with the strength and clarity it deserves.

The PA250A stands out with its versatile Class 2 wiring, featuring a 70V and 100V output transformer that can be easily switched at the rear, making it an ideal choice for both commercial and residential distributed speaker systems. Whether you're setting up an audio system for a large venue or a private space, this amplifier's adaptability ensures it can meet the demands of various applications.

With a single channel offering 200 watts per channel at 8 ohms, the PA250A is compatible with a wide array of speakers and audio equipment. Its wattage range of 200-299 watts per channel provides the flexibility needed to tailor your power output to the specific requirements of your audio environment.

Designed to work seamlessly with MA Series mixer-amplifiers, this power amplifier can be used to significantly increase the power of your existing setup. Additionally, its all-in-one capability makes it a perfect choice for telephone system paging solutions, ensuring that your messages are heard loud and clear.

The PA250A is not only powerful but also reliable and durable, crafted to withstand the rigors of frequent use while maintaining high-quality audio performance. Its sophisticated design and advanced features make it a top contender for anyone looking to enhance their audio system with a power amplifier that promises consistency and excellence in sound amplification.

Lowell Manufacturing PA250A Features

  • Balanced telephone paging input and 600 ohm line level balanced input, both controlled by a tamper resistant volume control in the rear
  • Hi-Z unbalanced Aux input with parallel RCA input connectors for music program source input
  • Unique music ducking circuit mutes Aux music input when a paging signal is present at telephone paging input or 600 ohm line level balanced input
  • Paging horn or "trumpet" protection low-cut filter is available by cutting a separate circuit board jumper
  • Master volume control, main power switch and circuit breaker in rear

Warranty Information

This product has a limited warranty of 12 months.

Product Documents

User Manual

Key Features

  • Deliver powerful audio with this 250W power amplifier, perfect for PA systems.
  • Achieve crystal-clear sound with a low Total Harmonic Distortion for pristine audio.
  • Enjoy versatile connectivity with 4 Ohms, 25V, and 70V speaker level outputs.
  • Ensure reliable performance with built-in protection circuits for long-term use.
  • Easily integrate with balanced TEL-PAGE and 600 Ohms inputs for seamless setup.
  • Monitor performance with helpful LED indicators for power and peak levels.

What's in the box:

  • Lowell Manufacturing PA250A 250W Power Amplifier
  • Lowell Manufacturing 1 Year Limited Warranty