M-S SPEAKER SYSTEM
#speaker
#audio system
#sound
#amplifier
#stereo
#M-S
#audio processing
#speaker system
#audio output
#sound reproduction
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Stereo Balance Meter Circuit
When the L and R signals are equal, no output is present from U1, and pin 6 is at a steady 4.5 V. Unbalanced audio causes the LEDs to vary in brightness, which indicates a difference that corresponds to the...
Amplifier Timer Circuit
This circuit turns off an amplifier or any other device when a low-level audio signal fed to its input is absent for at least 15 minutes. By pressing P1, the device is powered on, supplying power to any appliance connected...
Flame Feedback
Flame Feedback is a sound sculpture constructed from a speaker driver, a candle, and electronic components. The speaker is activated with a low-frequency tone, which moves air and causes the candle to flicker. An optical sensor detects the flicker of...
building my own aux circuit car stereo feedback
The layout of the PC board led to the decision to insert a stereo 3mm canceling type jack (5 pin) at the volume control chip inputs, which was mounted on the front panel. A suitable jack was not available in...
Amplifier Cool-Down Circuit Circuit
This cool-down relay circuit utilizes an integrated circuit (IC) timer to control a relay, which maintains the operation of the blower for a specified time delay determined by timer U3. The capacitance value of C2 can be adjusted to either...
4047/4066 audio slicer
You need to connect pins 1 and 13 of the 4053 to the virtual ground rail (top of C4), not the circuit's 0V rail.
The CD4053 is a triple 2-channel analog multiplexer/demultiplexer integrated circuit, widely used for routing analog signals...
Amplifier circuit
An amplifier is a device that accepts a varying input signal and produces an output signal that varies in the same way as the input but has a larger amplitude. The input signal may be a current, voltage, mechanical motion,...
Amplifier Timer
This circuit turns off an amplifier or any other device when a low-level audio signal fed to its input is absent for 15 minutes at least. Pushing P1, the device is switched on, feeding any appliance connected to SK1. Input...
Stereo VU Meter
This is it. It's a STEREO LED LEVEL METER. It's the cheapest and best bar graph display available and best of all, it uses readily available components. You only need a handful of LEDs, 22 transistors, some resistors, diodes, and...