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SETTING UP

You have two trimmers to set. Pin 3 of the depth pot is the best place to attach your probe if

you’re using a scope.

SHAPE

This adjusts the shape of the triangle wave. If you have an oscilloscope now’s the time to

fire it up. Set the mode switch to triangle and adjust the trimmer until you get a nice

triangular waveform. If you don’t have a scope you’re going to have to trust your ears.

There are two methods. 1) Turn depth and rate up full and adjust until you have the

smoothest tone. 2) Turn depth up full and rate right down - adjust until you have even

up and down slopes.

OFFSET (OST)

This sets the centre of the LFO sweep. Again, a scope is your friend here - adjust this so the

centre of the waveform is at 0V. No scope, adjust by ear for the fullest sweep you can hear.

MAKING SENSE OF IT ALL...

This isn’t an exact-science effect. Everything is highly interactive so experimentation is the

watchword. You’ll find a sweet setting in one mode will do nothing in the next. Once you turn

the rotary switch you’ll find the Bias control will need tweaking to get the next mode

working as you want.
The toggle switch is to select VCA/VCF

modes. If you’re not sure what that is,

just flip the switch.

Summary of Contents for Gristleiser

Page 1: ...Gristleiser Filthy dirty modulation fun Contents of this document are 2016 Pedal Parts Ltd No reproduction permitted without the express written permission of Pedal Parts Ltd All rights reserved...

Page 2: ...UPPLY Unless otherwise stated in this document this circuit is designed to be powered with 9V DC COMPONENT SPECS Unless otherwise stated in this document Resistors should be 0 25W You can use those wi...

Page 3: ...C5 100n C6 470n C7 2n2 C8 100u elec C9 100u elec C10 10u elec C11 10u elec Q1 2N3819 Q2 2N3906 Q3 2N3904 IC1 7660S IC2 4558 IC3 TL074 D1 2 1N4148 D3 Rate Indicator LED BIAS 100KB DEPTH 10KB LEVEL 100...

Page 4: ...bending them out of the way you can only do that so many times before the legs snap As the rotary is much deeper than the pots you should line everything up carefully before soldering Vertical mount p...

Page 5: ...istake with the switch Solder some nice long lengths of wire to the board connections for 9V GND IN and OUT Connect IN and OUT to the jacks as shown Connect all the GNDs together twist them up and add...

Page 6: ...2 Turn depth up full and rate right down adjust until you have even up and down slopes OFFSET OST This sets the centre of the LFO sweep Again a scope is your friend here adjust this so the centre of t...

Page 7: ...etc and you can safely daisy chain your supply to this pedal The BOARD GND connections don t all have to connect to one point They can be daisy chained around the circuit using larger connection poin...

Page 8: ...You use this template at your own risk Pedal Parts Ltd can accept no responsibility for incorrect drilling of enclosures FuzzDog co uk Drilling template Hammond 1590BB Recommended drill sizes Pots 7mm...

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