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Hammond X-66 User Manual

Hammond X-66
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X66 Vibrato Driver Preamp Dec.2010
dan.vigin
Page 1
Hammond
X-66
Renovating the
Vibrato Driver Preamp
by Dan.Vigin
Hammond® and Leslie® are registered trademarks of Suzuki Musical Instrument Manufacturing Co. Ltd.
Binche / Belgium Dec.2010

Table of Contents

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Hammond X-66 Specifications

General IconGeneral
BrandHammond
ModelX-66
CategoryAmplifier
LanguageEnglish

Summary

Hammond X-66 Vibrato Driver Preamp Renovation

Forewords and Project Purpose

General Description of Original Circuit

Original Vibrato Driver Preamp Circuit Details

Details the location and engineering of the original Hammond X-66 Vibrato Driver Preamp board.

X-66 Headroom Concept Explained

Redesigned VDP Circuit

MJE340 Transistor Selection and Use

33 Ohm Emitter Resistor Role

Comparison of Output Levels

Project Realization and Physical Layout

Conclusion of the VDP Renovation Project

PCB Layouts for Components and Copper

MJE340 Transistor Datasheet Specifications

MJE340 Transistor Performance Graphs

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