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Inter-M Americas Inc DPA-300S
300 Watt Single Channel Class D Amplifier


Housed in 2 RU compact chassis, the Inter-M DPA-300S Class D amplifier offers high power in reduced size and weight.
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Inter-M Americas Inc DPA-300S
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Housed in 2 RU compact chassis, the Inter-M DPA-300S Class D amplifier offers high power in reduced size and weight. The combination Class D type amplification circuitry combined with SMPS (Switch mode Power Supplies) creates a high efficiency amplifier offering reduced power consumption and low heat dissipation. The DPA-300S offers both low impedance and high impedance outputs in one package ideal for applications where high power and large quantity of long-line speaker installation is required such as airports, arenas, shopping malls, transportation stadiums or any large scale facilities.

The DPA-300S' class D amplifier offers greater than 90% power efficiency over traditional amplifiers. Switch mode power supply (SMPS) provides high efficiency and low weight along with reduced physical size and lower heat dissipation. The DPA-300S is fully equipped with a protection circuit against short circuit, overload, power and DC output and offers less than 1% THD, total harmonic distortion with an increased signal to noise ratio to 90 dB and a widened frequency response from 30 Hz - 18 kHz.

High definition sound is achieved by using a high impedance matching transformer and noise cancelling balanced audio input. The total harmonic distortion is reduced to less than 0.1% THD, with a high signal to noise S /N ratio of over 100dB with optimum broadband frequency response of 65 Hz - 20 kHz.

A 2 position Low Cut Filter at 65 Hz and 400 Hz helps to improve speech intelligibility and protects output from unwanted low frequencies.

Inter-M DPA-300S Features:

  • High power Class D amplifier
  • Switch Mode Power Supply
  • High efficiency, lightweight
  • Compact 2RU size
  • Status Out contact monitoring for EN-54 supervision
  • DC Back-up Power

Inter-M DPA-300S Specifications:

  • Rated Output Power: 300 Watts, Single Channel
  • Frequency Response (-3 dB): 30 Hz - 20 kHz
  • Output Voltage:
    • 100V: 33.3 ohms
    • 70V: 16.3 ohms
  • Input Sensitivity: 1V / 10 kohm Balanced
  • THD: Less than 1%
  • SNR: 95 dB
  • HPF / OFF: 65 Hz
  • HPF / ON: 400 Hz
  • Operating Temperature: -10°C to +40°C
  • Power Source: DC24V, AC220 - 240V, 50/60 Hz
  • Dimensions (WxHxD): 482mm x 132mm x 280mm

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