Showing posts with label Audio Speakers. Show all posts
Showing posts with label Audio Speakers. Show all posts



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So amplifiercircuit will try to do a definition of speakers, are one of the most common output devices used with computer systems. Speakers are transducers that convert electromagnetic waves into sound
waves. The speakers receive audio input from a device such as a computer or an audio receiver. This input may be either in analog or digital form. Analog speakers simply amplify the analog electromagnetic waves into sound waves. Since sound waves are produced in analog form, digital speakers must first convert the digital input to an analog signal, then generate the sound waves. The sound produced by speakers is defined by frequency and amplitude. The frequency determines how high or low the pitch of the sound is. For example, a soprano singer's voice produces high frequency sound waves, while a bass guitar or kick drum generates sounds in the low frequency range. Many speakers include multiple speaker cones for different frequency ranges, which helps produce more accurate sounds for each range. Two-way speakers typically have a tweeter and a mid-range speaker, while three-way speakers have a tweeter, mid-range speaker, and subwoofer.


250 W Stereo Audio Amplifier Class-T

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The TA0103A is a 250W continuous average (4Ω ), two channel Amplifier Driver Module which uses Tripath’s proprietary Digital Power Processing (DPPT M ) technology. Class-T amplifiers offer bot h the audio fidelity of Class-AB and the power efficiency of Class-D amplifiers. 

  • Audio/Video 
  • Amplifiers/Receivers 
  • Pro-audio Amplifiers 
  • Automobile Power Amplifiers 
  • Subwoofer Amplifiers 
  • Home/PC Speaker Systems
Circuit Amplifier:
250 W Stereo Audio Amplifier Class-T



Subwoofer Amplifier 40W

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This amplifier delivers massive power and uses one IC and two power transistors. The circuit consists of an amplifier IC (a TDA 2030A) and a power stage consists of two transistors.  Amplifier can be powered with an asymmetrical supply voltage of 12 to 44 V.

Circuit Diagram:

Subwoofer Amplifier 40W
Subwoofer Amplifier 40W


  • R1-R3, R7 = 100 K?
  • R6 = 8,2 kW
  • R4, R5, R8, R9 = 1.40 Ω 1%
  • R10 = 1 Ω
  • C1 = 470 nF
  • C2 = 10 V μF/63
  • C3 = 4.7 V μF/63
  • C4, C5, C7 = 220 nF
  • C6 = 2200 V μF/50
  • C8 = 1000 V μF/50
  • D1, D2 = 1N4001
  • T1 = BD712 or BD912
  • T2 = BD711 or BD911
  • IC1 = TDA2030A
  • LS = speaker - 4/8 Ω
  • Cooling = Fisher SK08/75