Musical Fidelity A3cr Manual de usuario
A3CR preamplifier Instructions for Use. Page 1of 9
INTRODUCTION
INSTRUCTIONS FOR USE
Thank you for purchasing the Musical Fidelity
A3CR remote control preamplifier.
Used properly and carefully, it should give you many
years of outstanding musical reproduction.
The A3CR preamplifier has been designed to operate
comfortably with the sonic capabilities of the new
SACD format. (Super Audio CD)
Aesthetically, the A3CR preamplifier is a perfect match for the
A3CR power amplifier, A3 CD player and the A3 Tuner.
Together, they form one of the finest hi-fi systems
that you can own today.
Dust regularly with a soft duster or soft brush but be
careful when using cleaning or polishing agents - they may
harm the surface finish.
If you have any questions about anything in your
audio system, please consult your dealer who is there to
help and advise you.
A3CR
PREAMPLIFIER
issue 2/12.10.2000
A3CR preamplifier Instructions for Use. Page 2of 9
SAFETY INFORMATION
IMPORTANT!
This unit is supplied in the U.K. with a mains lead fitted with a moulded 13 amp plug.
If, for any reason, you need to cut off this plug, please observe the following safety precautions.
Please dispose of the cut-off plug safely. It must not be plugged into a mains power supply.
The wires in the mains lead supplied with this appliance are coloured in accordance
with the following code:
Green and yellow..............Earth
Blue...............................Neutral
Brown................................Live
WARNING - This appliance must be earthed
As the colours of the wires of the mains lead of this appliance may not correspond with the
coloured markings identifying the terminals in your plug, proceed as follows:
The wire which is coloured green-and-yellow must be connected to the terminal in the plug
which is marked with the letter E or coloured green or green-and-yellow, or by the earth
symbol.
The wire which is coloured brown must be connected to the terminal which is marked with the
letter L or coloured red.
The wire which is coloured blue must be connected to the terminal which is marked with the
letter N or coloured black.
If connecting to a BS1363 plug, a 10 amp fuse must be used.
WARNING - Radio Frequency Interference (RFI)
This hi-fi product has been tested to ensure that its operation will not be adversely affected by
normal background levels of RFI. It is possible that if this product is subjected to abnormally
high levels of RFI the unit may be susceptible and not perform as expected. In the unlikely
event of this happening on a regular basis, please contact Musical Fidelity's service department.
The unit has also been tested to ensure that it does not radiate excessive levels of RFI that could
affect other pieces of electronic or electrical equipment.
The electronics in modern hi-fi equipment is complex and hence may be damaged by lightning.
It is possible that during electrical storms the operation of some equipment may be adversely
affected. For complete protection of your hi-fi system during such storms, mains plugs and aer-
ial leads should be disconnected.
Always ensure that when disconnecting and re-connecting your hi-fi equipment the mains
supply is switched off.
issue 1/02.02.2000
A3CR preamplifier Instructions for Use. Page 3of 9
GENERAL ADVICE
INSTALLATION PRECAUTIONS and USER INFORMATION
Your new A3CR preamplifier is designed and built to provide trouble-free performance, but as
with all electronic devices it is necessary to observe a few precautions.
Heed all warnings on the back of the unit.
Only connect the preamplifier to a mains outlet of the voltage marked on the back of the
unit.
The A3CR preamplifier will operate in accordance with its specifications as long as the
environmental conditions are kept in the following ranges:-
Temperature 5 to 45 degrees Celsius
Humidity 10 to 90% non condensing
Position the mains lead and signal interconnects where they are not likely to be walked
on or trapped by items placed on them.
Do not use near water. The unit shall not be exposed to dripping or splashing and no
objects filled with liquids, such as vases, shall be placed on the unit.
Do not place the unit near direct heat sources such as radiators or other equipment that
produces heat.
Do not place the unit where it can be subjected to direct sun-light.
Do not remove any covers or try to gain access to the inside. The warranty is invalid if
the unit has been tampered with. There are no user adjustments within. Refer all service
work to an authorised Musical Fidelity agent.
Dust regularly with a soft duster or soft brush but be careful when using cleaning or
polishing agents -they may harm the surface finish.
There are fuses in the unit. In the unlikely event that one blows, take your unit to your
audio dealer. Do NOT try to replace the fuse yourself or you will invalidate the warranty.
No naked flame sources, such as lighted candles, should be placed on the unit.
Keep out of reach of children.
For battery disposal, refer to the manufacturers instructions.
Important! Unauthorised opening of the equipment will invalidate any warranty claims.
Note: To help your dealer identify your amplifier if after-sales service is required, please quote
the serial number located on the rear panel of the unit.
issue 2/12.10.2000
A3CR preamplifier Instructions for Use. Page 4of 9
CONNECTIONS AND FACILITIES
issue 2/12.10.2000
MUSICAL FIDELITY
A3 DUAL MONO PREAMPLIFIER
CR
THISAPPLIANCE
EARTHED
MUST BE
13 14 15 16 17 18 19 20 21 22 23 24
A3CR preamplifier front panel layout
1Power on indicator LED
2Power on/off switch
3Mute LED
4Volume control
5Infra red receiver
6Phono input select button and LED
7CD input select button and LED
8Tuner input select button and LED
9AUX input select button and LED
10 SACD input select button and LED
11 TAPE input select button and LED
12 Tape monitor button and LED
A3CR preamplifier back panel layout
13 RIGHT output
14 Phono earth connection
15 MM/MC selection switch
16 Phono input
17 CD input
18 Tuner input
19 AUX input
20 SACD input
21 TAPE input
22 TAPE RECORD output
23 LEFT output
24 IEC mains inlet
POWER
MUSICAL FIDELITY A3 DUAL MONO PREAMPLIFIER
CR
TUNER
IRR
PHONO CD
MONITOR
SACDAUX TAPE
1 2 3 4 6 5 7 8 9 10 12 11
issue 2/12.10.2000
CONNECTIONS
A3CR preamplifier Instructions for Use. Page 5of 9
Before switching on the stereo system
please read carefully the instructions on the
following pages. The functional arrange-
ment of the controls makes the stereo sys-
tem easy to operate. You should neverthe-
less study these instructions to get the best
from your equipment.
BEFORE YOU SWITCH ON
You should make all connections to the
A3CR preamplifier before switching on.
Follow this routine before you listen for
the first time, and each time you change
any connections.
1Check all the inputs and outputs to
the A3CR preamplifier.
2Then check again.
3Turn the volume control to
minimum.
4Now you can switch on the power.
Wait for the power-up mute circuit to
switch off. approx. (15 to 20
seconds) The red LED in the vol-
ume control will now light.
Carefully advance the volume to the
level you want and enjoy the music.
NOTE
If the unit was switched off while
muted by the remote control, it will
still be muted next time it is switched
on. Press MUTE on the remote con-
trol to switch mute off. (LED on is
mute off, LED off is mute on)
For connecting the inputs or the outputs
Musical Fidelity recommend either the
600mm X-LINX signal interconnects or
the highly rated Nu-Vista interconnects
with integral RFI suppression. Various
lengths are available in Nu-Vista intercon-
nect cables.
Please contact your local dealer for more
information
OUTPUTCONNECTIONS
All connections should be made with the
power OFF.
The A3CR preamplifier has a right hand
line output and a left hand line output.
Plug the Red phono plug into the right out-
put and the other plug into the left output.
Now connect the other ends to the input of
your power amplifier, red to right input
and the other to the left input.
INPUT CONNECTIONS
All connections should be made with the
power OFF.
The A3CR preamplifier has 1 phono input
which can be used for either moving mag-
net (MM) or moving coil (MC) cartridges.
The type of cartridge is selected by the
switch on the back panel of the preamplifi-
er. (See Phono section of this manual for
further information)
The A3CR preamplifier also has 5 line
level inputs - CD, Tuner, AUX, SACD,
and Tape.
All line level inputs are electrically identi-
cal and are suitable for use with any source
component with an output voltage in the
hundreds of millivolts (mV). This includes
CD players, SACD players, tuners, tape
machines and the audio outputs of video
recorders, televisions, DVD and LaserDisc
players etc.
PHONO INPUT
The A3CR preamplifier has a phono input
for turntables fitted with either a moving
magnet cartridge (MM) or a moving coil
cartridge (MC). Use the MM/MC push
button switch to select the type of cartridge
that is fitted to you turntable.
IMPORTANT NOTE Do not operate the
MM/MC switch with the volume turned
up.
Some turntable/pick-up arm combinations
are fitted with an extra wire called a chas-
sis earth, which should be connected to the
green earth terminal on the back of the
amplifier.
TAPE RECORDING
The A3CR preamplifier has a single tape
circuit with facilities for off-tape monitor-
ing with 3-head cassette decks.
Connection of your tape machine to the
A3CR preamplifier should be as follows.
The tape machine's Tape/Line outputs go
to the A3CR preamplifier's 'Tape' input
sockets.
The tape machine's Tape/Line inputs go to
the A3CR preamplifier's 'Tape Record' out-
put.
To record, simply select the required
source with the source selector button on
the front panel. The selected source will
now be sent to the 'Tape Record' output for
recording by the attached tape machine.
You will also be able to hear the selected
source through the loudspeakers.
Note - you can adjust the listening level
with the volume control without affecting
the recording level.
OPERATION
REMOTE CONTROL
The remote control enables you to activate
the main functions of the amplifier from
the comfort of your armchair. Pressing the
volume up or down buttons on the remote
handset will advance the motorised volume
control in the desired direction.
Input selection can also be controlled with
the remote handset.
The mute button on the remote handset
mutes the output. To show the amplifier is
muted the red LED in the volume control
goes out.
Press the mute button again to switch the
mute off, the red led will light again.
The following should be noted when oper-
ating the amplifier using the remote con-
trol. The Infra Red receiver is the small
red lens marked I.R.R. situated on the front
panel. It is important to ensure that when
operating the remote control, the line-of-
sight from the remote to the infra red
receiver is not obstructed.
- Point the remote control (transmit-
ter) towards the I.R. lens (receiver)
on the amplifier.
- Visual contact must exist between
the transmitter and receiver.
- If the range of the remote control
decreases dramatically, replace the
batteries with new ones. (dispose of
old batteries as per the manufacturers
instructions)
issue 2/12.10.2000 A3CR preamplifier Instructions for Use. Page 6of 9
OPERATION
A3CR preamplifier Instructions for Use. Page 7of 9
issue 2/12.10.2000
OFF TAPE MONITORING
In conjunction with a 3-head cassette deck,
off-tape monitoring allows the user to
compare the recorded to original sound
whilst a recording is made. To do this,
first select the required source in the nor-
mal way and start recording. The Tape
Monitor button on the front panel can now
be used to switch between the source sig-
nal and the recorded signal allowing direct
comparison.
The red LED just above the tape monitor
button indicates that tape monitor is select-
ed.
Note that tape (the recorded signal) is
selected when the LED is lit. On some 3-
head cassette decks there is an additional
'tape/source' switch which will need to be
in the 'tape' position for the above to work
If you are in any doubt consult your tape
machine's manual or your dealer.
TROUBLESHOOTING
issue 2/12.10.2000
Problem Probable Cause Remedy
No power when POWER
is pressed
Mains plug not inserted
correctly Plug in securely
No sound
Volume control is set
to minimum Turn up the volume
Wrong input selected Select correct input
Mute is selected Press mute button on
remote control
Unit has not yet come out
of power-up mute Wait 10-15 seconds on
power-up for unit to
un-mute
Tape Monitor button is
depressed Press Tape monitor
button
Remote control unit will
not operate
POWER switch set to OFF Set switch to ON
Batteries not inserted in
remote control unit Insert batteries
Batteries flat Change batteries
Remote control not pointed at
IR receiver lens Ensure line of sight
between remote control
and IR receiver lens is not
obstructed
Range of remote control
has dramatically reduced
Batteries running out Change batteries
Basic troubleshooting of an amplifier is similar to troubleshooting of any other electrical or
electronic equipment. Always check the most obvious possible causes first. To give you a few
ideas of what to look for, check the following:
If none of these actions effect a cure, please contact your dealer, or an authorised Musical
Fidelity service agent. Remember, never open the case of the A3CR preamplifier yourself, as
this will invalidate the guarantee.
A3CR preamplifier Instructions for Use. Page 8of 9
issue 2/12.10.2000
Inputs 5 Line,
1 Phono, MM or MC switchable
THD < 0.007% 20Hz - 20kHz
< 0.004% 20Hz - 20kHz ‘A’ weighted
Frequency response 10Hz - 100kHz +/- 1.5dB
Sensitivity (for 1V RMS output) Line 220mV
Phono MM 2.5mV MC 350uV
S/N ratio (ref 1V RMS output) MM phono >-80dB 'A' weighted
MC phono >-65dB 'A' weighted
Line >-86dB ‘A’ weighted
Dimensions 440 x 95 x 400mm (W x H x D)
Height includes feet, depth includes terminals
Weight 13 kg (un-boxed)
Power requirements 100/115/230V AC 50/60Hz
(Factory preset)
Power consumption 20 watts (maximum)
Standard accessories Remote control handset
IEC type mains lead
2 x batteries (AAA, MN2400, LR03)
A3CR preamplifier Instructions for Use. Page 9of 9
Musical Fidelity reserves the right to make improvements which may result in specification or feature changes without notice.
SPECIFICATIONS
A3CR
PREAMPLIFIER
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