Portable Mixer


Posted on Feb 7, 2014

A low noise circuit equipped with a variable voltage-gain (10 - 100) pre-set, primarily intended as high quality microphone input, also suitable for low-level line input. Tone Control Module: a three-band (Bass, Middle, Treble) tone control circuit providing unity-gain when its controls are set to flat frequency response. It can be inserted after one or more Input Amplifier Modules and/or after the Main


Portable Mixer
Click here to download the full size of the above Circuit.

Mixer Amplifiers. The image below shows a Block diagram of the entire mixer featuring four Input Amplifier Modules followed by four in-out switchable Tone Control Modules, one stereo Line input, four mono Main Faders, one stereo dual-ganged Main Fader, four Pan-Pots, a stereo Main Mixer Amplifier Module and two further Tone Control Modules switchable in and out for each channel, inserted before the main Left and Right outputs. To parts listed above should be added: one Main on-off SPST switch, a LED used as pilot-light with its dropping 2K2 1/4W series-resistor, DPDT switches to enable or omit Tone Control Modules as shown in the Block diagram, input and output connectors of the type preferred, one stereo dual-gang 100K potentiometer to fade the Stereo Line Input as shown in the Block diagram, battery clip, PP3 9V battery, knobs etc.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

FAST CHARGER controlled by a 68HC11
30KV Power supply / Generator
Microprocessor programmable interval timer
Light Dark Sensor With Relay Circuit Using LM741
high voltage 555 audio modulated flyback
Build an Servo Scales
Generative Art Conference GA2006
DIY LED Tachomter (RPM gauge)
Cold cathode fluorescent lamp CCFL power supply
Atari Joystick USB Adaptor
Spark-Gap Tesla Transformer



Top