Tutorials, Schematics, Theory, and Fun for the DIY Audio World!
A simple 2 Transformer, 4 Germanium Diode Ring Modulator with a true bypass switching scheme. Includes input for Carrier Wave modulation. Power is only required for the status LED.
True Bypass Passive Ring Modulator Read More
A simple switching circuit that allows you to route a signal to two different paths. LEDs help indicate which signal path is active, although this circuit can also be used …
Passive A/B Box Read More
Originally made by Coron, the DS-8 Drum Synth circuit is a fairly complex circuit that generates some awesome analog synth tones.
Coron DS-8 Drum Synth Clone Read More
Ripped straight from the Princeton PT 2399 Digital Delay Datasheet, this schematic is a great basic circuit to get acquainted with this extremely impressive Integrated Circuit.
PT2399 Echo Application Circuit Read More
From the Princeton PT2399 datasheet. A great starting point for experimenting with the PT2399.
PT2399 Surround Delay Application Circuit Read More
A highly modified Linear Feedback Shift Register circuit with a lot of oscillators. Sounds a lot closer to vintage Atari than the much-more-famous Atari Punk Console.
Atari Junk Console Read More
The Atari Punk Console schematic.
Atari Punk Console Read More
A simple circuit that allows for power to be switched between a 9V battery and an AC-DC Adapter. This snippet is useful for the beginning of power supply design for …
Center Negative Polarity Dual Power Supply Read More
A very useful schematic to be used in all sorts of audio applications, including guitar pedal power supply circuits & analog synthesizers. Power is automatically switched from a 9V Battery …
5V Center Negative Power Supply Read More
I took some of my well-earned EE classtime experience and decided to use it for vintage Atari audio awesomeness! This circuit utilizes a Linear Feedback Shift Register along with an …
CMOS LFSR Vintage Atari Sound Effects Generator Read More