Audio

The following articles were tagged with audio:

• Subwoofer active low pass filter
  A simple circuit based on the LM358 opamp to be placed before an audio amplifier driving a subwoofer loudspeaker.
  
• Subwoofer passive low pass filter
  A simple capacitors and resistors network to be placed before a generic audio amplifier in order to filter the high frequencies
  
• Subwoofer third order passive low pass filter
  Project and schematic of a passive circuit made of capacitors and resistors to be placed before an audio amplifier to filter the high frequencies
  
• Cheap measurement of an audio amplifier input impedance
  The calculation requires only a multimeter to measure the effective alternating voltage and a sine source, such as a computer or a mobile phone
  
• Single power supply modular audio mixer
  Schematic and printed circuit board for a single power supply audio mixer, made of a master module and many line in or mic modules.
  
• Mixer: main board
  The schematic and the printed circuit board for the main board of the single power supply modular audio mixer
  
• Mixer: line input board
  Schematic and printed circuit board for the line input board, part of the single supply modular audio mixer
  
• Mixer: mic input board
  Schematic and printed circuit board for the microphone preamplifier board, part of the single power supply modular audio mixer.