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THREE INPUT TWO OUTPUT MIXER – Circuit Schematic
THREE INPUT TWO OUTPUT MIXER
Uses two separate common-cathode video mixers. Same heading markers are inserted into both mixers front input 2, while other inputs handle independent markers. ...
SIMPLE AUDIO MIXER – Circuit Schematic
SIMPLE AUDIO MIXER
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UNITY GAIN FOUR INPUT AUDIO MIXER – Circuit Schematic
UNITY GAIN FOUR INPUT AUDIO MIXER
The circuit has four inputs. The voltage gain between each input and the output is held at unity by the relative values of the 470k © input resistor and the 47...
AUDIO MIXER – Circuit Schematic
AUDIO MIXER
Designed around an LM3900 quad op amp, this mixer combines 2-line and 2-mike inputs and sums them at the output terminal. R7 through R10 can be changed to vary ...
SOUND I F FOR COLOR TV – Circuit Schematic
SOUND I F FOR COLOR TV
Uses three transislor stages und Foster-Seeley discriminotor to give audio output of 1 v peak to peak. -D. Bray, Solid State Makes Debut in Big Screen Color Tv,...
TWO CHANNEL AUDIO MIXER – Circuit Schematic
TWO CHANNEL AUDIO MIXER
The figure shows a basic two-channel op-amp mixer circuit. The gain is equal to R5/R1 or R5/R2 for channel 1 or 2, respectively. Typically R1 and R2 are 2. 2 to...
Mods and Odds – Circuit Schematic
Mods and Odds
Uch as the Hot-Rod enthusiast is forever tinkering with his `wheels` to be `just a little different`, so are guitar players forever tinkering with their guitars...
Bassman Modifications – Circuit Schematic
Bassman Modifications
Changing to a 3-prong AC cord is pretty much an expected upgrade or mod, as is replacing the filter capacitors. Changing the coupling capacitors to Orange Drops...
Hawk Audio MP-DAC Listening Test – Circuit Schematic
Hawk Audio MP-DAC Listening Test
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TNT1541 diy zero-oversampling dac – Circuit Schematic
TNT1541 diy zero-oversampling dac
The TNT Convertus has been one of my favorite designs. It was probably one of the first DAC DIY projects published in Italy, and attracted a lot of attention (w...
Vacuum State Electronics FVP5A tube preamp – Circuit Schematic
Vacuum State Electronics FVP5A tube preamp
This was one of those reviews where time and circumstances conspired to allow a dual-test. I made the first contacts with Vacuum State, and Allen was eager to o...
Tim Stinchcombe Synth circuit – Circuit Schematic
Tim Stinchcombe Synth circuit
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time between the notes – Circuit Schematic
time between the notes
The circuit board I purchased didn`t have a working 48v phantom power voltage converter on it. That was completely fine with me because I wanted to build a 48v ...
Interpolating Scanner Circuit – Circuit Schematic
Interpolating Scanner Circuit
This is an original design for an interpolating scanner, a circuit with a number of signal inputs, a control voltage input and a signal output. The output effec...
Discrete FET Guitar Preamp – Circuit Schematic
Discrete FET Guitar Preamp
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MIDI circuits – Circuit Schematic
MIDI circuits
MIDI, or Musical Instrument Digital Interface, is a specification for a communications protocol between digital synthesizers and other digital music devices. It...
Theremin Schematics – Circuit Schematic
Theremin Schematics
A mute-switch for the Etherwave that adds a "mute status" light which doubles as a power-on light. Here`s the schematic. Don`t forget to browse the rest of Art`...
Theremin Circuits Scratchpad – Circuit Schematic
Theremin Circuits Scratchpad
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Digital Theremin – Circuit Schematic
Digital Theremin
The above circuit, whilst it works, is GREATLY INFERIOR to Lev`s Oscillator for Theremin use. The above simulation waveforms - Red Sine = voltage on L1:A, Black...
Updated Circuit Details for Clara Rockmores Theremin – Circuit Schematic
Updated Circuit Details for Clara Rockmores Theremin
Adrian Bontenbal has provided us with updated notes from his experiments in building a re-creation of Clara Rockmore`s theremin. As you`ll recall, Bob Moog shar...