DifficultyRating: 7.5 / 10
|Capacitors||10 Electrolytic, 6 Polyester|
|Other||3 Pots, 1 Trim Pot|
Make sure you don't get the five pin transistors confused when building this section. There is one 2SC2291, and two 2SC1583 transistors. Also, the picture of the completed VCA on the main fabrication page is wrong, C23 is backwards.
As with the previous section, solder in all components except the potentiometers, and then solder in the pots.
You might want to mount Q9 and Q10 on Sip Sockets so you can replace the transistors with higher gain transistors at a later date. See higher_beta_transistors_on_q9_and_q10
|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|