aion ZVEX MEGALITH Manuel - Sayfa 2

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1 Project Overview

2 Introduction & Usage

INTRODUCTION

The Megalith Dual Drive is a hybrid of the ZVEX Box of Rock and Distortron, two similar pedals

composed of cascaded SHO boost stages.

The Box of Rock came first in 2006. In addition to the three cascaded stages, it also includes a fourth

SHO stage at the end for switchable volume boost. The Distortron followed in 2009 as part of the lower-

cost "Vextron" series (which also included the Mastotron). The Distortron omits the boost, but adds two

toggle switches for gain (low or high) and "subs" or bass (3 different settings).

By combining the Distortron's switches with the Box of Rock's extra boost stage, we can have the best of

both worlds. The Megalith is a touch-sensitive low- to medium-gain pedal that overdrives naturally and

responds very well to the guitar's volume knob.

The Box of Rock was designed as a 2-channel effect, with the SHO as the "always on" clean foundation to

which the drive channel can 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 adds an internal slide switch allowing the order to be changed so that the

boost comes before the drive. In this mode, the boost stacks with the drive and adds to the gain rather

than just boosting the volume, as in the default ordering.

Note that since the gain stages are identical to individual SHO circuits, the two gain controls (the main

circuit gain and the boost level) exhibit the characteristic "crackle" of the SHO when they are adjusted,

since they are directly biasing the MOSFETs. This is normal.

USAGE

The Megalith has four knobs, two toggles, and one internal slide switch:

• Gain controls the amount of gain in the first stage of the drive section.

• Tone is a Big Muff-style "balance" control that pans between treble and bass emphasis.

• Drive Level sets the overall output of the drive signal.

• Boost Level controls the gain of the boost stage.

• Gain (toggle) selects between three different gain modes.

• Sub (toggle) selects between three different bass cutoff frequencies after the third drive stage.

• Order (internal slide switch) changes the order so that drive comes before boost (default operation)

or boost comes before drive.

MEGALITH DUAL DRIVE

10 Licensing

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