Rega Aria Manuale utente
World class hi-fi made in England.
Introduction
The function of a phono pre amplier is to match the output from a pick
up cartridge to the input of a line level amplier. It is required to amplify
the very low signals produced by the cartridge and also to equalise the
frequency curve in accordance with RIAA record cutting standard.
Moving coil (MC) and moving magnet (MM) cartridges require different
types of phono pre ampliers to achieve optimum performance. The Aria
uses two separate circuits dedicated to both moving coil and moving
magnet cartridges and avoids compromises.
The Aria is an “all analogue amplier” with no digital control circuitry.
The fully aluminium case screens the internal circuit from any stray RFI
signals.
We have avoided including any superuous gadgets as they obstruct
the signal path and degrade the sound quality. The Aria incorporates
remarkable and innovative design ideas. These innovations are described
more fully in the technology section of this manual.
Alternatively, you can simply switch on, sit back and let your Aria sing for
itself.
Introduction
Technology
Installation
Back Panel Connectivity
Loading Seings
Front Panel Indicators
MC Cartridge Adjustment
Technical Specications
Important Notes
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Technology
The Aria has two entirely separate high performance phono stages. One fully adjustable dedicated
moving coil and a moving magnet stage. Each stage has its own separate input sockets and input
pre amplier circuitry. This enables Rega to design bespoke input circuitry for each cartridge without
compromise. The MM/MC signal switching is performed at a high level and a low impedance using
relays thus not causing any degradation of the signal.
The MC input uses parallel connected low noise FET’s (Field Effect Transistor) congured as a
compound pair conguration. The use of FET transistors ensures there is no bias current owing in the
cartridge coil so as not to upset the delicate magnetic geometry of the cartridge. The MC input has the
provision for selecting resistive input loading of 70 to 400Ω and capacitive loading of 1000 to 4200pF.
The input sensitivity can be changed by 6dB, via the back panel.
The MM input uses low noise bipolar input transistors also congured as a compound pair. There
are two separate power supplies for each channel and further sub power supplies for each of the
low noise input circuits. Nichicon FG electrolytic capacitors have been used in critical positions in
the power supplies. ICEL and Wima polypropylene capacitors have been used in the signal path and
equalisation networks. Discrete circuitry is used throughout the signal path ensuring full control of the
circuit design.
Installation
The Aria will work well on most surfaces, provided there is sufcient air around it to prevent
overheating. To avoid any possible magnetic interference and increased hum levels, position the Aria
as far away from the turntable as the tonearm lead will allow, this ensures all delicate electronics are
kept away from other transformers and motors etc. Try not to stack other Hi-Fi components directly
on top of each other. Given the nature of sensitive high gain phono ampliers, the Aria may need
placing away from high power ampliers that use large transformers. If in the rare event that low level
noise should become overly intrusive, try using the lower gain setting, and move the unit away from
possible noise sources as described.
The minimal heat produced by the Aria is dissipated by the case, particularly the left hand side. Try to
ensure that the case has an uninterrupted air passage around it. The Aria circuit has been carefully
designed to work with a minimal “warm up” period of just a few minutes as the sensitive input circuits
stabilise and reach their optimal operating conditions. The MC input circuit uses a self-adjusting servo
control to keep the MC input circuit at its optimum operating point, compensating for any variations in
ambient and operating temperature.
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Setup
Separate inputs are used for moving magnet and moving coil cartridges. Connect your turntable’s
tonearm cable to the appropriate input sockets on the back of the Aria. If your tonearm has a separate
earth this should be rmly connected to the earth terminal shown on the rear panel in the diagram
above.
Connect the Aria to your amplier via the sockets marked Output to the appropriate line level input on
the back of your amplier. Use a high quality phono cable such as the Rega Couple 2 (not supplied).
The mains power lead (supplied) should be connected to the IEC socket on the right hand side located
above the fuse holder.
N.B. Always switch both pre and power amps off before changing any connections.
Le and Right MC Loading Resistance
1 and 2 off = 400 Ω
1 only on = 100 Ω
2 only on = 150 Ω
1 and 2 on = 70 Ω
Capacitance
3 and 4 off = 1000 pF
3 only on = 2000 pF
4 only on = 3200 pF
3 and 4 on = 4200 pF
Le and Right MC Gain
1 off and 2 on low gain = 63.5 dB
1 on and 2 off high gain = 69.3 dB
Back Panel Connectivity
Loading Seings (Adjustable via back panel)
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Powering Up
The Aria is activated by pressing the On/Off button situated to the left of the control panel. The REGA
logo will glow RED. It is recommended to activate the Aria before the power ampliers and deactivate
after they have been switched off.
N.B. The unit will be muted for approximately 5 seconds when powered-up or switching between
inputs. MM or MC inputs are selected by pressing the input button on the front panel. The LED
indicator will show the selected input. When switching between MM & MC the Aria goes into mute
briey to avoid any intrusive switching noise whilst the circuitry settles. When switching between MC
and MM both LED’s will temporarily light, with a short delay in the audible ‘click’ of the relay. This is a
function of the mute and relay contact cleaning / activation circuit and is normal.
Front Panel Indicators
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IMPORTANT: Turn off the Aria before changing any of the settings on the back, especially the MC Gain
setting which causes the MC input circuit to re-adjust. This may cause a big ‘thump’ through the
speakers if the amplier is on and the Aria is the source component. The MC input has the provision
for selecting resistive input loading of 70 to 400 Ω and capacitive loading of 1000 to 4200 pF. The input
sensitivity can also be changed by 6 dB. You must adjust each channel (left and right) individually,
via the use of the dip switches located on the back panel. Your cartridge manufacturer will state the
recommended loading for the model MC cartridge you have chosen.
The Rega Ania, Apheta 2 or Aphelion MC models require the following settings:
Left and Right MC Loading Resistance - 1 only on = 100 Ω
Left and Right MC Loading Capacitance - 3 and 4 off = 1000 pF
Left and Right MC Gain - 1 on and 2 off high gain = 69.3 dB
*The Aria will be factory set to the above settings by default.
MC Cartridge Adjustment
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Technical Specications
Maximum output level = 11 V RMS
Rated output level = 200 mV
Output resistance = 100 Ω
Minimum output resistance for a –3 dB point at 15 Hz = 1 k
AC supply 230 V & 115 V Nominal +/- 10%.
230 V / 20 mm Fuse / T250 mA L
115 V / 20 mm Fuse / T500 mA L
Power Consumption = 10 Watts
Ambient operating temperature 5 to 35 °C
Technical Specications / MC Input
Generator source resistance = 15 Ω
Loading set to 100 Ω and 4200 pF
Input sensitivity (0 dB high gain setting) = 70 µV for 200 mV output
Input sensitivity (-6 dB low gain setting) = 133 µV for 200 mV output
Resistive input loading = 70, 100, 150 & 400 Ω
Resistive input loading = 70, 100, 150 & 400 Ω
Capacitive input loading = 1000, 2000, 3200 & 4200 pF
Maximum input level (0 dB high gain setting) = 5.1 mV at 1 kHz
Maximum input level (-6 dB high gain setting) = 10 mV at 1 kHz
Gain (0 dB high gain setting) = 69.3 dB at 1 kHz
Gain (-6 dB low gain setting) = 63.5 dB at 1 kHz
Frequency response (100 kΩ output load) = 13 Hz (-3 dB) to 70 kHz (-0.2 dB)
RIAA accuracy (100 kΩ output load) = better than +/-0.2 dB 70 Hz to 70kHz
THD+Noise (-6 dB low gain setting) = typically 0.035% at 1 V Bandwidth 100 Hz to 22 kHz
Noise (15 Ω terminator and -6 dB low gain setting) = typically –71 dB V un-weighted 100 Hz to 22 kHz
Signal to noise ratio (un-weighted 100 Hz - 22kHz bandwidth and 0 dB high gain setting) = -67 dB using
1 kHz 5 cm/sec track on the HFS69 test record and Apheta cartridge tted to a RP8 turntable.
Technical Specications / MM Input
Generator source resistance = 40 Ω
Input sensitivity = 1.7 mV for 200 mV output
Input loading = 47 k in parallel with 100 pF
Maximum input level = 93 mV at 1 kHz
Gain = 41.4 dB at 1 kHz
Frequency response (100 kΩ output load) = 15 Hz (-3 dB) to 100 kHz (-0.2 dB)
RIAA accuracy (100 kΩ output load) = better than +/-0.2 dB 100 Hz to 100 kHz
THD+Noise = typically 0.005% at 1 V Bandwidth 100 Hz to 22 kHz
Noise (150 Ω terminator on input) = typically –86 dB V un-weighted 100 Hz to 22 kHz
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Important Notes
Allow adequate air circulation around the left hand side of the unit as this houses the heat sink for
the power supply. It will typically run 5° C above the ambient temperature. Recommended distance
between this side and other units is 60 mm. This unit is intended for use in moderate climates.
To reduce the risk of re, electric shock or product damage, do not expose the unit to rain, moisture,
dripping or splashing and ensure that no objects lled with liquids, such as vases shall be placed upon
it. Do not remove the case covers, there are no user serviceable parts inside.
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