Table of Contents

Headphone and Mixer Mods

Kill Switch on Headphone Amplifier

The original TB-303 had a kill switch hooked up to the LA 4140 (Headphone Amplifier), which makes sense, because the LA44140 is the only draw of the +6Volt power.

Modify Headphone Amplifier to Distortion Circuit

This is entirely theoretical, but you might be able to change the circuit so that the LA 4140 can be used as a Distortion, and/or EQ circuit.

You'll need the Datasheet If you are going to get far with it.

Schematic Power Supply Voltage Controlled Oscillator Voltage Controlled Filter Envelope Generator Voltage Controlled Amplifier Headphone And Mixer Digital Sequencer Midi, USB and Sync
Fabrication Building the Ps Building the Vco Building the Vcf Building the Envelope Building the Vca Building the Headphone And Mixer Building the Sequencer Building the Midi and Sync Finishing It Off
Testing Testing the Ps Testing the Vco Testing the Vcf Testing the Envelope Testing the Vca Testing the Headphone And Mixer Testing the Sequencer Testing the Midi and Sync
Mods Ps Mods Vco Mods Vcf Mods Envelope Mods Vca Mods Headphone And Mixer Mods Sequencer Mods Midi And Sync Mods Finishing Mods

CategoryMods