Episode Booster - Bias / Controls

[FormulaFourteen]

Hi folks

Just built an Episode Boost and I have a couple of questions.

1) what's the procedure for setting the trimpot position? The build docs don't say. Please explain like I'm five - I've got to the point where I'm decent at the paint by numbers part of building pedals but still need some hand holding!

2) second - can anyone explain the toggle switch layout? Specifically - for the +3dB and 'bright' switches is 'toggle up' the on or off setting?

3) Finally - what do the three settings of the fat switch do? The original EP boost doesn't seem to have this toggle!

Cheers

 

[ODA]

1) You can set the bias however you prefer. However, I would go about setting it with the pedal set on 9v not 18v. While set at 9v I would then start by adjusting the Bias to 4.5v, you get that voltage reading by using a multimeter with the (-) lead to ground the (+) lead on the drain of the Jfet (pin #1 of the jfet or pin#1 of the trim pot).

2) I can't say for sure what is up and down, don't have the PCB, however on both the +3dB and Bright switch adding the resistor to the circuit will give you less of the said name of the switch. So, +3db will be louder when jumped (no resistor) and Bright will be brighter when jumped (no resistor).

3) You have three settings here, 1u 10u and 100u, the higher the cap value the more FAT. It might not be that obvious with lower boost/volume settings on the pedal. so, make sure you have the boost cranked to max to better hear the difference. When the switch is in the middle (off position) you will have the 1u cap in circuit, again can't say for sure what is up and down without the PCB.

Hope this is helpful

 

[FormulaFourteen]

Thanks!