Primare R20 MM-MC Manual de usuario

Primare R20 MM-MC Amplifier User Guide

§0 Preface 17/4/02, 3:21 pm1

>Preface

Primare Systems AB

Idavägen 17D

SE-352 46 Växjö

Sweden

The information in this guide is believed to be correct as of the date of

publication. However, our policy is one of continuous development and so the

information is subject to change without notice, and does not represent a

commitment on the part of Primare Systems AB.

Primare is a trademark of Primare Systems AB. All other product names are

trademarks or registered trademarks of their respective owners.

FCC Warning: This equipment generates and can radiate radio frequency

energy and if not installed and used correctly in accordance with our

instructions may cause interference to radio communications or radio and

television reception. It has been type-tested and complies with the limits set out

in Subpart J, Part 15 of FCC rules for a Class B computing device. These limits

are intended to provide reasonable protection against such interference in

home installations.

EEC: This product has been designed and type-tested to comply with the limits

set out in EN55013 and EN55020.

This guide was produced by Human-Computer Interface Ltd,

http://www.interface.co.uk

§0 Preface 17/4/02, 3:21 pm2

iii

Contents

Introduction

WELCOME TO THE R20 MM-MC

AMPLIFIER.................................................................. (1

USING THE R20 WITH OTHER PRIMARE

PRODUCTS................................................................ (1

TECHNICAL SPECIFICATION............................. (1

Connecting the R20 Amplifier

BACK PANEL CONNECTIONS........................... (3

POWER CONNECTION........................................ (4

OUTPUTS ................................................................... (3

INPUTS....................................................................... (3

SETTING UP ............................................................. (4

SWITCHING ON AND OFF................................ (4

INCREASING THE GAIN IN MM MODE........ (4

Index

§0 Preface 17/4/02, 3:21 pm3

>Preface

§0 Preface 17/4/02, 3:21 pm4

Introduction

Welcome to the Primare R20 MM-MC Amplifier! This chapter introduces you to

its key features, and explains how you can use it to get the best out of your

vinyl record collection.

WELCOME TO THE R20 MM-MC AMPLIFIER

If you have a precious collection of recordings on vinyl records, and your

system includes a high-quality turntable, tone arm, and pick-up cartridge, the

R20 MM-MC Amplifier provides the ideal interface between the low-level

output provided by the cartridge and the line-level inputs provided by a

modern sound system.

Moving-magnet or moving-coil cartridges

The R20 accepts either moving-magnet or moving-coil type cartridges, and the

gain and impedance can be adjusted for the optimum match between the

cartridge and preamplifier.

An additional increase in gain can be achieved by fitting an internal jumper

inside the unit, for use with a very low output moving-magnet cartridge.

USING THE R20 WITH OTHER PRIMARE PRODUCTS

Although the R20 is configured to match line-level inputs of any high-quality

preamplifier, it is ideal for use with the Primare A20 or A30.1 Integrated

Preamplifiers.

TECHNICAL SPECIFICATION

Gain MM: 35.5dB, 41.5dB with jumper

MC: 54dB

Output impedance 100Ω

RJAA accuracy ±0.2dB, 50Hz – 20kHz

Signal-to-noise MM: -80dB

MC: -75dB

Power consumption 9W

Dimensions (WxDxH) 215 x 275 x 75mm

Weight 4kg

§1 Introduction 17/4/02, 3:21 pm1

>Introduction

§1 Introduction 17/4/02, 3:21 pm2

Connecting the R20 MM-MC Amplifier

This chapter explains how to connect the R20 to the other components in your

system, using the connections on the back panel.

POWER CONNECTION

Warning: Before connecting power check that the required supply voltage,

indicated on the back panel, corresponds to your local AC supply. If a

different voltage is stated on the type plate do not connect the amplifier to the

mains power, and seek advice from your dealer.

Connect the mains power using the enclosed mains cable.

Note: Always disconnect the mains power before connecting or

disconnecting any of the cables.

OUTPUTS

Connect the R20 to the preamplifier or processor using the left and right phono

outputs using high-quality stereo phono leads.

INPUTS

Connect the left and right phono inputs to the cartridge outputs from your

turntable. Connect the ground terminal to the ground connection from your

turntable.

]A Right output.

]B Right input.

]C Moving-magnet or moving-coil

selection.

]D Left output.

RIGHT

INPUT IMPEDANCE

OUT IN

10 •

20 •

50 • • 100

• 200

• 47k

LEFT

OUT

MM MC

GND

]F ]G ]H

]C ]D ]E]A ]B

]E Left input.

]F Input impedance selection.

]G Ground terminal.

]H Mains power input and fuse.

BACK PANEL CONNECTIONS

§2 Connecting 17/4/02, 3:21 pm3

>Connecting the R20 MM-MC Amplifier

SETTING UP

To set the input impedance

•Set the INPUT IMPEDANCE switch to the appropriate value; check the

specification of your cartridge for the correct setting.

To set the gain

•Set the switch on the back of the panel to MM or MC as appropriate.

With high-output moving-coil cartridges use the MM position.

Jumpers can be fitted internally to increase the gain in MM mode as described

below.

SWITCHING ON AND OFF

To switch on

•Use the switch under the left-hand edge of the front panel.

]A ]B

INCREASING THE GAIN IN MM MODE

• Fit shorting links in positions ]A and ]B on the circuit board:

We recommend that your dealer carry out this operation.

§2 Connecting 17/4/02, 3:21 pm4

Index

back panel connections ............................ 3

connections ............................................. 3

power ................................................ 3

gain........................................................ 4

increasing........................................... 4

input impedance, setting........................... 4

inputs...................................................... 4

moving-coil cartridges .............................. 1

moving-magnet cartridges ........................ 1

outputs .................................................... 3

technical specification .............................. 1

§3 Index 17/4/02, 3:21 pm5

>Index

§3 Index 17/4/02, 3:21 pm6

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