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BYOC 10-band graphic equalizer Instructions Manual

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B.Y.O.C. 10-band graphic equalizer instructions
©2007 byoc, LLC
version 1.0
page 2 - 3
page 4
page 5 - 8
page 9
page 10 - 11
page 12
page 13
page 14

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Summary of Contents for BYOC 10-band graphic equalizer

  • Page 1: Table Of Contents

    B.Y.O.C. 10-band graphic equalizer instructions version 1.0 checklist page 2 - 3 schematic page 4 populating the circuit board page 5 - 8 assembly page 9 mounting the PCB page 10 - 11 wiring page 12 finishing up page 13...

  • Page 2: Checklist

    Checklist Resistors: 1 - 470ohm (yellow/purple/black/black/brown) 1 - 4.7k (yellow/purple/black/brown/brown) 1 - 6.8k (blue/gray/black/brown/brown) 1 - 470k (yellow/purple/black/orange/brown) 1 - 2.2m (red/red/black/yellow/brown) Capacitors: 1 - 100pf ceramic disc (101) 1 - 180pf ceramic disc (181) 1 - 270pf ceramic disc (271) 1 - 560pf ceramic disc (561) 1 - 820pf ceramic disc (821) 1 - .0018uf film (182)
  • Page 3 4 - 6/32 screws (for enclosure) 1 - pre-tooled enclosure 1 - circuit board 1 - 3PDT foot switch 1 - 1/4 stereo jack 1 - 1/4 mono jack 1 - battery snap 1 - AC adaptor jack 4 - bumpers hook up wire...

  • Page 5: Populating The Circuit Board

    Populating the Circuit board Before you start, make note that there are 3 typos on the PCB silk screening highlighted here in yellow. The 1M resistor should be a 2.2M, the 220pf cap should be a 180pf, and the .0082uf cap should be a .0068uf. Step 1: Add the resistors.
  • Page 6 Step 2: Add the diode. Be sure to match the stripe on the diode with the stripe on the PCB layout. Step 3: Add the ceramic disc capacitors. These are not polarized and can go in either direction. Remember to use the 56pf instead of the 220pf.
  • Page 7 Step 4: Add the film capacitors. These are not polarized and can go in either direction. Remember to use the .0022uf instead of the .0082uf. Step 5: Add the aluminum electrolytic capacitors. These are polarized. The positive lead will be longer and should go in the square solder pad. The negative lead will be shorter and have a black stripe down one side and should go in the round solder pad.
  • Page 8 Step 6: Add the two BA3812L's. MAKE SURE TO PROPERLY ORIENTATE THESE CHIPS!!!. Line up the end that has the notch in it with the end of the layout that has the double lines. Make sure all the pins are straight and alligned before you try sticking it in. Step 7: Add the sliders.

  • Page 9: Assembly

    Assembly 1. Install the jacks first. If you are looking down inside the enclosure, the mono jack goes on the right side and the stereo jack goes on the left. Place the washer on the outside of the enclosure. Use a 1/2" wrench to tighten. 2.

  • Page 10: Mounting The Pcb

    Mounting the Circuit Board Step 1: Insert the three 4/40 screws from the outside of the enclosure. Then add one #4 toothed lock washer to each screw on the inside of the enclosure. Then add one 4/40 hex nut to each screw and tighten. Step 2: Add one 3/8 nylon spacer to each screw.
  • Page 11 Step 4: Install the circuit board so that the 3 screws fit into the 3 mounting holes in the circuit board. CAREFULLY !!!!!!!!! slide the circuit board all the way down to the nylon spacers. The slider knobs will probably not line up with their respective channels. You will need to use some sort of probe-like tool like a very small screwdriver and insert it into the trouble channels and very gently bend the entire slide to one side so that it is properly aligned with its channel.

  • Page 12: Wiring

    EQ wiring diagram...

  • Page 13: Finishing Up

    2 and then come back to it with a fresh pair of eyes. Then the problem usually jumps right out at you .usually. If you still can t get it working, start a thread on the BYOC forum and ask for help. board.buildyourownclone.com...

  • Page 14: Modifying The Selected Frequencies

    Modifying the Selected Frequencies So now you've got your pedal working and you want to tailor it for a very specific set up..OK. The stock frequency spread that is supplied with the kit is designed to provide the widest frequency range available for guitar. But the lowest and highest frequencies may slightly extrapolate your guitar amp's abilities depending upon your speakers' frequency range.