Classic 250W Class D Audio Amplifier Kit

Manufacturer: Silicon Chip Magazine
SKU: K5181
(SC Nov '12) This high specced power amplifier operates in Class 'D' as opposed to earlier amplifiers which run in the more conventional Class 'AB' or Class 'A'. The new Class 'D' amplifier offers the extrem
$95.45

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Overview

(Silicon Chip Magazine Nov ’12) This high specced power amplifier operates in Class ''D'' as opposed to earlier amplifiers which run in the more conventional Class ''AB'' or Class ''A''. The new Class ''D'' amplifier offers the extremely low distortion figures of a Class ''A'' whilst still having the efficiency of a standard class''AB'' amplifier. This simple to build kit with its 250W into 4Ω output will make an ideal subwoofer or front floorstanding speaker driver in a home cinema setup.



Important Note For Kit Buyers:
This product is supplied in component form and requires soldering, drilling, and assembly. We recommend users are familiar with at least basic electronic principles and have the ability to solder.

Features:

  • High efficiency
  • high power
  • Low distortion and noise
  • Bridging option for driving 8Ω loads with two modules
  • Over-current protection
  • Over-temperature protection
  • Under-voltage switch-off
  • Over-voltage switch-off
  • DC offset protection
  • Fault indicator
  • Amplifier running indicator
  • Optional speaker protector module

Specifications

Total harmonic distortion and noise: Typically <0.01%

  • Power output: Up to 150W into 8Ω and 250W into 4Ω power supply dependent
  • Power output, bridged, 8Ω only: 450-500W power supply dependent
  • Efficiency: Typically 90% at full power for 8Ω and 83% for 4Ω
  • Signal-to-noise ratio: 103dB with respect to full power
  • Input sensitivity: 2V RMS@4Ω, 2.2V RMS@8Ω
  • Frequency response: 10Hz - 20kHz +/-1dB
  • Power requirements: +/-40 - 60Vdc, 50-55V nominal
  • Over-temperature cut-out: 75ºC
  • Under-voltage threshold: +40V
  • Over-voltage threshold: +75V
  • DC offset protection threshold: > +/-4Vdc
  • Over-current threshold: 29A
  • Idling (no signal) frequency: 500kHz adjustable
  • MOSFET dead time: 45ns

Warranty & Returns

12 Months

We Offer 12 Months for this product

Specifications

Products specifications
Warranty Group
Warranty 12 Months

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