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MEGALITH DUAL DRIVE

10

LICENSE & USAGE

No direct support is offered for these projects beyond the provided documentation.

 It’s assumed 

that you have at least some experience building pedals before starting one of these. Replacements and 
refunds cannotbe offered unless it can be shown that the circuit or documentation are in error. 

All of these circuits have been tested in good faith in their base configurations.

 However, not all the 

modifications or variations have necessarily been tested. These are offered only as suggestions based 
on the experience and opinions of others.

Projects may be used for commercial endeavors in any quantity

 unless specifically noted. No 

attribution is necessary, though a link back is always greatly appreciated. The only usage restrictions 
are that 

(1) you cannot resell the PCB as part of a kit without prior arrangement

, and 

(2) you cannot 

“goop” the circuit, scratch off the screenprint, or otherwise obfuscate the circuit to disguise its source

(In other words: you don’t have to go out of your way to advertise the fact that you use these PCBs, but 
please don’t go out of your way to hide it. The guitar effects industry needs more transparency, not less!)

DOCUMENT REVISIONS

1.0.0 (2021-11-12)

  

Initial release.

Содержание MEGALITH

Страница 1: ...Box of Rock Distortron A two channel drive composed of cascaded MOSFET boost stages The drive channel and boost channel can be combined or selected independently Amp like overdrive distortion 1 0 0 20...

Страница 2: ...be added as seen in Zvex s original demo video The boost comes after the drive when both are engaged This is a reasonable way of using it but it won t work with every rig Because of this the Megalith...

Страница 3: ...2 330R Metal film resistor 1 4W R13 390R Metal film resistor 1 4W R14 47k Metal film resistor 1 4W R15 82k Metal film resistor 1 4W R16 9k1 Metal film resistor 1 4W 10k in original See build notes R17...

Страница 4: ...ubstitute 2N7000 rotate 180 degrees Q2 BS170 MOSFET N channel TO 92 Can substitute 2N7000 rotate 180 degrees Q3 BS170 MOSFET N channel TO 92 Can substitute 2N7000 rotate 180 degrees Q4 BS170 MOSFET N...

Страница 5: ...h add up to 810n 2 pole filter values Between the tone control and drive level there is 2 pole filter formed by R16 C12 and R17 C13 In the original Box of Rock the two resistors are 10k and the two ca...

Страница 6: ...Q3 R11 R13 C5 R14 C10 C11 R15 R16 C12 R17 C13 HI GAIN 2 3 1 C7 C6 SUB 2 3 1 R12 C8 C9 GND 1M 5kC 1M 1M BS170 1N5239 GND 5k1 100n VA GND 1uF 47k GND 10uF B BOOST IN OOST OUT R18 BOOST LEVEL 1 2 3 R19 R...

Страница 7: ...If you d rather use open frame jacks please refer to the Open Frame Jack Drill Template for the top side LED hole drill size assumes the use of a 5mm LED bezel available from several parts suppliers A...

Страница 8: ...MEGALITH DUAL DRIVE 8 ENCLOSURE LAYOUT Enclosure is shown without jacks See next page for jack layout and wiring 125B...

Страница 9: ...MEGALITH DUAL DRIVE 9 WIRING DIAGRAM 125B D IN V GND D OUT B IN B OUT DRV IN GND V V JACK GND JACK OUT IN DRV BOOST BOOST OUT OUT IN...

Страница 10: ...s suggestions based on the experience and opinions of others Projects may be used for commercial endeavors in any quantity unless specifically noted No attribution is necessary though a link back is a...

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