This is the 12V Euro version of my NGF dual version. It uses the now obsolete LM1496 balanced modulator -demodulator. But you can still source them and I have some in my stock. So I decided to make a PCB and module. I started with the original Elektor Formant schematic published in “Formant Erweiterungen” p35ff. I left out the microphone and envelope follower part because I already have such modules. I have added input buffers and raised the signal level to my 10Vpp used throughout my system.

Specs and features

• Quad Ringmodulator
• 10Vpp input and output
• Runs on +/-12V and +/-15V
• Power consumption around 70mA each rail

The documentation and the Gerber files for download can be found in my website.