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JEFF ROWLAND 1 - User Manual

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MODEL 1 STEREO AMPLIFIER
OWNER’S MANUAL
TABLE OF CONTENTS
Introduction
Features
Unpacking Instructions
Installation
* Space requirements
* A.C. connections
Input Impedance Selection
Adjustable Gain
Signal Connections
* Single-ended input configuration,
stereo operation
* Differential mode input configuration,
stereo operation
* Single ended input configuration,
bridged-mono operation
* Differential mode input configuration,
bridged-mono operation
Basic Troubleshooting
Technical Specifications

Table of Contents

Questions and Answers

JEFF ROWLAND 1 Specifications

General IconGeneral
BrandJEFF ROWLAND
Model1
CategoryAmplifier
LanguageEnglish

Summary

Introduction

Features

Highlights key design aspects of the Model 1 stereo amplifier, including feedback, distortion cancellation, and component matching.

Unpacking Instructions

Lists items found in the shipping crate and advises saving packing materials. Mentions warranty card completion.

Installation

Space Requirements

Details optimal placement for convection cooling, requiring at least 2 inches of space on all sides, and stacking guidelines.

A.C. Connections

Explains connecting the power cord and using the stand-by switch on the rear and front panels for operation.

Input Impedance Selection

Low Impedance Setting

Recommends the 'low' setting (600 ohms) for direct-coupled solid-state preamplifiers.

Medium Impedance Setting

Recommends the 'medium' setting (20 k ohms) for most solid-state, hybrid, and some tube preamplifiers.

High Impedance Setting

Recommends the 'high' setting (100 k ohms) for most tube preamplifiers.

Adjustable Gain

Signal Connections

Stereo Operation with Single-Ended Output Preamplifier

Details connecting a preamp to non-inverting RCA inputs and using shorting plugs for inverting RCA inputs.

Stereo Operation with Balanced Output Preamplifier

Explains connecting a preamp's output to differential XLR or single-ended RCA inputs.

Bridged-Mono Operation with Single-Ended Output Preamplifier

Describes connecting a preamp to the right channel non-inverting input and setting the BRIDGE switch to ON.

Bridged-Mono Operation with Balanced Output Preamplifier

Details connecting a preamp to the right channel differential XLR input and setting the BRIDGE switch to ON.

Basic Troubleshooting

Amplifier Does Not Turn On

Troubleshooting steps include checking the power cord connection and power supply fuses.

Amplifier Shuts Down

Addresses shutdown issues by checking rail fuses and disconnecting inputs to identify DC sensing.

Technical Specifications

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