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Board Dimensions (W x H) 1.9 x 1.65 inches, i.e.: 48 x 42mm. This design will fit into a 1290NS/1590B size enclosure or larger. While
some may compare the Zenith Overdrive to the Hermida Zendrive™ GuitarPCB.com is in no way affiliated with Hermida and this
circuit in no way should be represented as a copy or clone.
This board is the next-generation of our Zenith Overdrive, but new version includes some additional features. This board has PCB-
mounted potentiometers, and we recommend that you use the included drilling template to assure that your holes align with the
components correctly. Additionally, we have included space on the board for custom modifications; if you decide you want to
customize the clipping section, add some additional gain to the output buffer stage, etc.
PARTS LIST (Default Build)
GuitarPCB.com
Zenith Pro Overdrive Build Instructions
Part
Value
J1
Jumper
D1
1n4148
D2
LED
D3
1n4148
D4
1n4001
R1
2M2
R2
470K
R3
1K
R4
1K
R5
10K
R6
1K
R7
10K
R8
10K
R9
3K3
R10
Jumper
Part
Value
IC1
4558
C1
470n
C2
100n
C3
100p
C4
3n3
C5
470n
C6
100u
C7
47u
Q1
2N7000
Q2
2N7000
Bi-Color LED
D5
CA*
P1 Vol
A100K
P2 Gain
B500K
P3 Tone
B50K
P4 Voice
B10K
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Summary of Contents for GuitarPCB Zenith Pro
- Page 1 Board Dimensions (W x H) 1.9 x 1.65 inches, i.e.: 48 x 42mm. This design will fit into a 1290NS/1590B size enclosure or larger. While some may compare the Zenith Overdrive to the Hermida Zendrive™ GuitarPCB.com is in no way affiliated with Hermida and this circuit in no way should be represented as a copy or clone.
- Page 2 SCHEMATIC STATUS LED D5 is a common anode bi-color LED. The diagram at right shows the pin- out, schematic symbol and pad connection for a common anode LED. The pin-out for the bi-color LED is typically (but not always) as follows: 1st Color Cathode Is on the “flat”...
- Page 3 We will be posting actual tested examples of clipping configurations for you to try in the GuitarPCB.com Layout Gallery forum area. You may also come up with your own configurations. If you do discover any interesting layouts to share, please follow our Forum rules, and do not use any Copyrighted or Trademarked names.
- Page 4 48 x 42mm Note: Only Drill the LED hole displayed above if you plan to use the status LED on the Zenith Pro circuit board! This drawing shows the spacing between centers of the pots, and the distance of the LED pads from the center of the pots. Hole diameters are not exact in this image, so please measure your components before selecting a drill bit.
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