David Rolo TWIN PEAKS TREMOLO Build Manual Download | Manualshive

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TWIN PEAKS TREMOLO

Build Guide for v2.1

Revision 2.1
David Rolo 2014

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Summary of Contents for TWIN PEAKS TREMOLO

Page 1: ...TWIN PEAKS TREMOLO Build Guide for v2 1 Revision 2 1 David Rolo 2014 ...

Page 2: ......

Page 3: ...The build consists of 2 boards that were designed to fit in a BB enclosure with top mounted open jacks PCB1 holds the pcb mounted pots and rotary switch PCB2 holds the main circuit ...

Page 4: ...The 2 boards are connected together like this ...

Page 5: ...f course you can use other parts and not mount them on the PCB Then you will probably need a bigger enclosure They can be ordered in batches from different places like http www befr ebay be itm 300881322642 http www aliexpress com item Free Shipping 20 x Plastic Band Switch 2P4T Rotary Switch 996781872 html ...

Page 6: ...Here is a wiring diagram ...

Page 7: ...or R3 R4 R5 R6 4 15k Resistor R7 R8 2 51k Resistor R13 R14 R15 R16 4 100k Resistor R1 R2 R9 3 1M Resistor POTS P1 1 10k lin Tone P2 1 10k lin Rate P3 1 10k lin Shape P4 1 10k lin Multiplier P5 1 10k lin Depth P6 1 10k lin Symmetry TRIMPOTS TR3 1 5k Lo Pass TR4 1 5k Hi Pass TR2 1 25k Offset TR1 1 50k Volume IC s U1 1 TL074 OpAmp U2 1 NE5532 OpAmp U3 1 TAPLFO Microchip VOLTAGE REGULATORS T1 T2 2 78L...

Page 8: ...cessarily need it It depends on your particular Optocoupler and whether you like the signal to be chopped real hard or not I suggest socketing that cap trying without it first and then start with a low value like 20n until you find a value that removes the tick but does not round off the square wave too much C3 and C4 define the High Pass and Low pass cut off frequency If my calculations are right...

Page 9: ... outboard wires to their corresponding points the bypass and Tap switches LED s jacks etc Now that you have finished assembling the pedal you can bias it 1 Turn the DEPTH pot fully counterclockwise SYMMETRY and TONE in middle position 2 Set T3 and T4 fully counterclockwise 3 Start by measuring the supply voltage at bias point B1 4 Adjust the Offset trimpot T2 until you get the same voltage about h...

Page 10: ...th If you turn down the depth completely you can use the tone knob as a sort of EQ Depth Allows setting the depth of the modulation Rate Sets the speed of the modulation Symmetry Allows changing the ratio between the upper and lower wave of the LFO signal For example when using the square wave you can set whether the off or the on periods are the longest This diagram shows the effect of the symmet...

Page 11: ... Multiplier allows to select the multiplier that will be applied to the tapped tempo Source http www electricdruid net datasheets TAPLFO2Datasheet pdf ...

Page 12: ...This is a drill template I have been using but take your own measurements to make sure everything fits before committing to drilling your box ...

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