Table of Contents
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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
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Table of Contents
Troubleshooting
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Summary of Contents for Rega Mira 3
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Page 1: Table Of Contents
Mira 3 manual.qxd 10/12/2002 11:24 Page 1 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... -
Page 2: Introduction
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... -
Page 3: Design Innovation
Mira 3 manual.qxd 10/12/2002 11:24 Page 3 Design Innovation In common with all REGA products, the Mira 3 amplifier has been designed without compromise. Our time and money has been spent on developing the unique circuit design and using unusually high quality components. -
Page 4: Installation
Mira 3 manual.qxd 10/12/2002 11:24 Page 4 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. -
Page 5: Ventilation
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. -
Page 6: Dc And Short Circuit Protection
Mira 3 manual.qxd 10/12/2002 11:24 Page 6 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. -
Page 7: Pre-Amp Output And Power-Amp Input
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. -
Page 8: Input Connections
Mira 3 manual.qxd 10/12/2002 11:24 Page 8 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. -
Page 9: Phono Input
Mira 3 manual.qxd 10/12/2002 11:24 Page 9 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. -
Page 10: Line Inputs
Mira 3 manual.qxd 10/12/2002 11:24 Page 10 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... -
Page 11: In Use
Remote sensor Switching On The Mira 3 is turned on by depressing the power switch on the left of the control panel. The LED in the power switch will glow red. After several seconds you may hear a gentle click. This indicates the switch-on relay has been released and the amplifier is ready for use. - Page 12 Mira 3 manual.qxd 10/12/2002 11:24 Page 12 The volume control has a resolution of 1dB per step, giving a total range of 80 steps over the available gain or volume range of 80dB. There is a calibrated LED display comprising of 20 LED's, which indicates the gain level or relative position of the volume control;...
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Page 13: Input Selection
Mira 3 manual.qxd 10/12/2002 11:24 Page 13 Input Selection The Input selector is combined with the volume control. To select your input, push the control knob in once. You are now in Input selection mode. You have eight seconds to choose your input. (When the eight seconds are up the control knob will return to the volume function). -
Page 14: Loudspeakers & Cable
OFC types, are not recommended, as they often do not represent value for money. Try to keep cable runs to either speaker short and of similar length. Your REGA dealer will be able to make up specific lengths of cable for you with plugs already fitted. Never join cables together to increase their length. -
Page 15: Bi-Amping
Mira 3 manual.qxd 10/12/2002 11:24 Page 15 Bi-Amping With the use of additional power amplifiers, the Mira 3 integrated amplifier can be used in a bi-amping system, in conjunction with suitable speakers. This system can also be made active by the use of a suitable cross-over unit. -
Page 16: Specifications
Mira 3 manual.qxd 10/12/2002 11:24 Page 16 Specifications Input Specification (61W into 8 ) Note - Factory setting of gain range level 2 CD/Tuner/Line 1/Line 2/Tape input sensitivity: 220mV. Load 10K Phono input sensitivity (moving magnet): 2.1mV. Load 47K (in parallel with 100pF) Power amplifier input sensitivity = 818mV. -
Page 17: Troubleshooting
Mira 3 manual.qxd 10/12/2002 11:24 Page 17 Troubleshooting (Power on, power switch LED lit but no output) Check the amplifier is connected to the desired input and the correct input selected Check the speakers are connected correctly to the amplifier... - Page 18 Mira 3 manual.qxd 10/12/2002 11:24 Page 18 Troubleshooting (No power, power switch LED does not light up) Is the mains supply Plug in and connected and the switch on socket switched on? Is the front panel Contact your on/off switch fully...
- Page 19 Mira 3 manual.qxd 10/12/2002 11:24 Page 19 Troubleshooting (Power on, sound from one speaker only) Are the connections between Correct the fault by plugging the speakers and the amplifier them in. If the wires are loose or secure and functioning...
- Page 20 Mira 3 manual.qxd 10/12/2002 11:24 Page 20 Troubleshooting (Loud hum through both speakers when ‘Phono’ is selected) Is the amplifier situated directly below Correct the fault the cartridge? Are there other pieces of Correct the fault HI-FI equipment close to...
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Page 21: Troubleshooting
Mira 3 manual.qxd 10/12/2002 11:24 Page 21 Troubleshooting (Loud hum through one speaker when ‘Phono’ input is selected) Is there a faulty earth connection on the leads from the source component? (check by swapping the leads and seeing if the hum moves... -
Page 22: Input Sensitivity And Pre-Amp Gain Level
Gain range or level 3 gain = 15dB Any adjustments made to the power amp link switch and gain must be carried out by an authorised Rega dealer. If work is carried out by any person other than a Rega dealer it will invalidate your warranty. -
Page 23: Owners Log
Mira 3 manual.qxd 10/12/2002 11:24 Page 23 Owners Log Owner..................Date..................Where Purchased..................................Owner..................Date..................Where Purchased..................................Owner..................Date..................Where Purchased..................................
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