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Cornell Custom 40 Owner's Manual

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Table of Contents

Cornell-Custom 40
and
Cornell-Custom 80
Owner's Manual
DC Developments
Musical Equipment Design & Development

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Summary of Contents for Cornell Custom 40

  • Page 1 Cornell-Custom 40 Cornell-Custom 80 Owner’s Manual DC Developments Musical Equipment Design & Development...

  • Page 2: Table Of Contents

    Please read all instructions before operating unit! If you require any further information regarding this amplifier or any other CORNELL product, please do not hesitate to contact us. WARNING: TO PREVENT DAMAGE, FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.

  • Page 3: Introduction

    When this happens a small capacitance is produced between them, the result of which is a substantial loss in both high frequency response and harmonic richness. The Cornell-Custom 40 and 80 are designed to avoid this by having specific point to point wiring.

  • Page 4: Technical Design

    Technical Design The Pre-amplifier The Cornell-Custom 40 and 80 are designed to be simple in use and yet produce the wide range of sounds that the musician expects from a professional amplifier. The Bass and Treble controls work over the entire frequency range of your guitar, allowing increased amounts of low and high frequency adjustment.

  • Page 5: Controls

    Controls Input Hi & Lo. High impedance input connections for instruments. Input Hi provides 6db more gain than the Lo input. Volume Adjusts the overall volume of the amplifier. Bass Adjusts the amount of low frequency boost. Treble Adjusts the amount of high frequency boost. Mains Indicator When illuminated the valve heaters are on and there is power to the amplifier.

  • Page 6: Specifications

    Volume, Bass, Treble. (Reverb optional extra) LINE OUTPUT Coil tapped output transformer 600 Ohms at 0.25 Watts. OUTPUT Custom 40: 40/10W; Custom 80: 80/20W SPEAKERS Custom 40 1 X Tone Tubby (8 Ohms) With 8/4 Ohms impedance selector switch. Custom 80 2 X Tone Tubby (16 Ohms each in parallel) with 8/4 impedance selector switch.
  • Page 7 TUBES ARE HOT! Wait for the tubes to cool or replace tubes when amplifier has not been used for several hours. The Cornell-Custom 40 has three pre-amp valves (12AX7/ECC83) and two power valves (6L6). The Cornell-Custom 80 has the same pre-amp valves, but four out- put valves. Valve Failure When a valve breaks down its internal elements can short.

  • Page 8: Block Diagram

    BLOCK DIAGRAM INPUTS TONE CONTROLS BASS TREBLE VOLUME Output Output Transformer 8 Ohms Speaker Outputs 4 Ohms Line Power Transformer connections to be altered ONLY by qualified personnel BLUE Mains Switch YELLOW BLACK Thermistor Bias Fuse ORANGE Neutral Live Htrs BROWN 100Va/c Mains 240 Va/c Mains...

This manual is also suitable for:

Custom 80

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