Rega Mira 3 Bedienungsanleitung

Contents

Introduction.............................................................................1

Design Innovation...................................................................2

Installation..............................................................................3

Ventilation...............................................................................4

DC and Short Circuit Protection.............................................5

Pre-amp Output and Power-Amp Input...............................6

Input Connections...........................................................7-9

In Use..............................................................................10-12

Loudspeakers & Cable.........................................................13

Bi-amping....................................................................14

Specifications...........................................................15

Troubleshooting.....................................................16-20

Input sensitivity and pre-amp gain level................................21

Owners Log...........................................................................22

Mira 3 manual.qxd 10/12/2002 11:24 Page 1

Introduction

Your REGA amplifier has been designed to reproduce music

effectively and easily. The Mira 3has been built to Rega’s

discriminating standards of reliability and quality to ensure many

years of musical enjoyment.

An amplifiers function is to boost the tiny signal generated by a

cartridge, CD player, or other source so that it can drive the

loudspeakers. It is vital that the amplifier achieves this without

changing the signal, which would distort the music. We have avoided

superfluous gadgets such as tone controls or a headphone socket as

they obstruct the signal path and degrade the produced sound

quality.

The REGA amplifiers incorporate remarkable and innovative design

ideas. For those interested in the technical details, these innovations

are described more fully in this manual.

Alternatively, you can simply switch on, sit back, and let your amplifier

speak for itself...

Mission Statement

Rega’s philosophy is to make high quality products at sensible prices, as a means

of reproducing music as faithfully as possible. Rega is committed to the design

and development of new and existing products, both in hi-fi and other areas, that

will perpetuate Rega’s values of quality and value for money.

Mira 3 manual.qxd 10/12/2002 11:24 Page 2

Design Innovation

In common with all REGA products, the Mira 3amplifier has been

designed without compromise. Our time and money has been spent

on developing the unique circuit design and using unusually high

quality components. However, we have included new useful features

not seen on REGA amplifiers of this price before.

The Mira 3 amplifier has digitally controlled analog switched

resistor network volume control.

The Mira 3 features REGA designed circuitry, developed in-

house with the aid of CAD circuit simulation, computer modeling and

extensive listening.

The Mira 3 has an internal switch to link the pre-amplifier

and power amplifier, giving total flexibility within the REGA range;

highly uncommon for amplifiers of this price.

The Mira 3 includes extremely high quality components not

normally found in an integrated unit. These include high tolerance

polypropylene capacitors, advanced output transistors, and a large

toroidal transformer.

Mira 3 manual.qxd 10/12/2002 11:24 Page 3

Installation

The Mira 3 will work well on most surfaces, such as a shelf or a table,

provided there is sufficient air around it to prevent overheating.

To avoid magnetic interference, site the Mira 3 as far away from the

turntable as the tonearm lead will allow. If possible, place it to the left

of the turntable.

Keep other equipment, such as tuners, cassette decks or CD players

away from the amplifier. Never stack other hi-fi components on top of

the Mira 3.

Due to the layout of Rega's amplifier circuit designs, they are virtually

insusceptible to Electro Magnetic interference, and by virtue of the

extruded aluminium case, emit practically no Electro Magnetic

radiation.

However, placing any electronic equipment close together may

impair the performance of one or both of the items.

Mira 3 manual.qxd 10/12/2002 11:24 Page 4

Ventilation

The heat produced by the Mira 3 is dispersed to the air via the case,

particularly from the extruded heatsink. Ensure that the case has an

unobstructed air passage around it.

Never place the amplifier on carpet, rugs, bedding or other hi-fi

equipment.

Note: If the Mira 3 is driven at high volume for a long period, it will

become quite warm. This is entirely acceptable and as long as there

is sufficient ventilation, the amplifier will continue to work quite

normally.

Mira 3 manual.qxd 10/12/2002 11:24 Page 5

DC Protection

The Mira 3 has a circuit which protects the speakers from direct

current in the event of a major failure of the system.

Short Circuit Protection

If in the event that the speaker leads are shorted, the fold back short

circuit protection will protect the output stage from excessive

currents. This innovative REGA protection circuit is not placed in the

audio signal path and therefore does not affect sound quality.

Mira 3 manual.qxd 10/12/2002 11:24 Page 6

Pre-Amp Output and Power-Amp Input

The Mira 3 has a pre-amplifier output & power-amplifier input, giving

total flexibility within the REGA range.

The pre-amplifier can drive at least 5 power amplifiers, sub bass units

etc, and the power amplifier can be used with most pre-amplifiers.

There is an internal link via a DIP switch between the pre-amp output

and power-amp input which can be turned off by moving the DIP

switch to the OFF position. If you are using only the pre-amp stage of

the Mira 3 in conjunction with a separate power-amplifier you may

want your dealer to move the switch to the off position.

The pre-amp outputs and power-amp input use RCA type (phono)

connectors.

Any adjustments made to the power amp link switch and gain must

be carried out by a authorised Rega dealer.

If work is carried out by any person other than a Rega dealer it will

invalidate your warranty.

Mira 3 manual.qxd 10/12/2002 11:24 Page 7

Input Connections

All the inputs and the tape outputs are made via RCA (phono) type

connectors. The sockets on the REGA amplifiers are clearly marked

red and white.

Right: always the lower row and marked in RED.

Left: always the upper row and marked in WHITE.

IMPORTANT: ALWAYS TURN OFF THE AMPLIFIER WHEN CHANGING LEADS,

ESPECIALLY SPEAKER CABLES.

Rear Panel Connections

Right

Left

SPEAKERS

TAPE TAPE TAPE

IN OUT LINKLINE2LINE1TUNERCD

Rega Research Limited, England

PHONO

POWER

AMP

PRE

AMP

OUT

IEC

Ground screw

Mira 3 manual.qxd 10/12/2002 11:24 Page 8

Phono Input

The Mira 3 can be used with moving magnet (MM) or high output

moving coil (MC) cartridges.

Earthing

Earthing is done via the Phono socket ground for Rega turntables so

a separate earth is not necessary. In the unlikely event that your

tonearm needs to be earthed to the amplifier, the grounding tag may

be connected to the case grounding screw above the input sockets.

See Rear Panel Connections drawing (page 7).

Compact Disc Input

The compact disc input is suitable for use with any CD source.

Mira 3 manual.qxd 10/12/2002 11:24 Page 9

Tuner Input

The tuner input is suitable for use with most types of AM/FM tuners.

Line Inputs

The Line inputs enable the connection of additional sources, such as

a second tape machine, tuner, video recorder etc...

Tape Input/Output

Almost any tape machine can be used with your Mira amplifier,

including compact cassette, video cassette, reel to reel, DAT, and

DCC.

NOTE: ALL INPUTS, OTHER THAN THE PHONO INPUT, ARE AT STANDARD "LINE

LEVEL" AND CAN THEREFORE BE USED FOR ANY LINE LEVEL INPUT.

Mira 3 manual.qxd 10/12/2002 11:24 Page 10

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