A3.2 CR
DUAL MONO POWER AMPLIFIER
C
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MUSICAL FIDELITY A3.2 DUAL MONO POWER AMPLIFIER
POWER
INSTRUCTIONS FOR USE
CR
Thank you for purchasing the Musical Fidelity A3.2
Power Amplifier.
Used properly and carefully, it should give you many
years of outstanding musical reproduction.
Æsthetically, the A3.2 CR power amplifier is a perfect match
for the A3.2 CR preamplifier, A3.2 CD player and the A3.2 tuner.
Together, they form one of the finest hi-fi systems available 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 your audio system,
please consult your dealer who is there to help and advise.
CR
Issue 1: April 2002
A3.2
Power
Instructions for Use Page 1 of 7
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GENERAL ADVICE
INSTALLATION PRECAUTIONS and USER INFORMATION
CR
Your new A3.2
power amplifier 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 shown on the back of the product.
CR
Only connect the A3.2
amplifier to a mains outlet having the same voltage as marked at the
back of the unit.
Always ensure that when disconnecting and reconnecting your audio equipment the mains
supply is switched off.
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, or place water-filled containers on the amplifier, for example, flower
vases or potted plants. If water does spill inside, immediately pull out the mains plug from
the wall socket and inform your dealer, who should then check the unit before further use.
Entry of liquid into the amplifier is dangerous, and may cause electric shock or fire hazard.
Do not place the unit near heat sources such as radiators, direct sunlight or other equipment.
The case of this amplifier can run at high temperatures - operate the unit in a well ventilated
area, and do not touch the side heatsink fins after periods of use at high output power.
Do not remove covers or try to gain access to the inside. There are no internal user adjust-
ments. Refer all service work to an authorised Musical Fidelity agent.
NOTE: Unauthorised opening of the equipment will invalidate any warranty claims.
CR
There are fuses inside the A3.2
amplifier. In the unlikely event that one blows, refer the unit
to your audio dealer. Do NOT try to replace the fuse yourself as this will invalidate the war-
ranty.
Dust regularly with a soft duster or soft brush, but be careful when using cleaning or polishing
agents - they may harm the surface finish.
The electronics in modern hi-fi equipment is complex and may, therefore, be adversely affected
or damaged by lightning. For protection of your audio system during electrical storms, remove
the mains plugs and disconnect any aerial lead.
CR
If after-sales service is required, to help your dealer identify the A3.2
the serial number located on the rear panel of the unit.
amplifier please quote
RADIO FREQUENCY INTERFERENCE (R.F.I)
This product has been tested to ensure that its operation is not adversely affected by normal
background levels of R.F.I., and that it does not itself generate excessive amounts of interfer-
ence. However, if a problem persists, please contact your Musical Fidelity agent.
CR
Issue 1: April 2002
A3.2
Power
Instructions for Use Page 3 of 7
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CONNECTIONS AND FACILITIES
Front panel layout
C
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MUSICAL FIDELITY A3.2 DUAL MONO POWER AMPLIFIER
POWER
Power on
indicator LED
Power on/off switch
Back panel layout
1
2
3
4
5
6
7
Right speaker outputs (two)
Right input
Right loop output (see page 5)
Left loop output (see page 5)
Left input
Left speaker outputs (two)
IEC mains inlet
1
2
3
4
5
6
7
POWER CONSUMPTION
600W
RIGHT SPEAKER
OUTPUT
LEFT SPEAKER
OUTPUT
RIGHT
INPUT
RIGHT LOOP
OUTPUT
LEFT LOOP
OUTPUT
LEFT
INPUT
-
-
+
-
-
+
+
MUSICAL FIDELITY
C
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+
A3.2 DUAL MONO POWER AMPLIFIER
MANUFACTURED IN ENGLAND BY MUSICAL FIDELITY
SERIAL NUMBER
CAUTION
MOUNT UNIT ON SOLID SURFACE. DO NOT REMOVE SCREWS OR COVERS UNDER ANY CIRCUMSTANCES. NO USER SERVICEABLE
COMPONENTS INSIDE. REFER SERVICING TO QUALIFIED ENGINEER. SEE OWNERS MANUAL FOR FURTHER INFORMATION.
THISMAUPSPTLBIEANCEIMPORTANT
EARTHED
CC
50/60 Hz
CR
Issue 1: April 2002
A3.2
Power
Instructions for Use Page 4 of 7
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CONNECTIONS and OPERATION
All input, output and power connections
BEFORE SWITCHING ON. . . . .
should be made with the mains power
switched OFF.
Plug the accessory IEC mains lead into the
rear panel socket, then the other end into a
convenient wall outlet.
INPUT CONNECTIONS
Turn the volume control on your preampli-
fier to minimum, and switch on its power.
CR
The A3.2
Power amplifier can be used
with a preamplifier or any line level source
which has a volume control. We highly
CR
OPERATION
recommend the matching A3.2
pream-
plifier available from Musical Fidelity.
Press the POWER switch on the front
CR
panel of the A3.2
- the red POWER
Connect the left and right outputs from
your pre-amp or other line level source to
the RCA inputs on the back panel marked
as LEFT and RIGHT Line Inputs. The
corresponding LOOP OUTPUT sockets
are directly connected inside the unit to
duplicate the line inputs. This is to enable
onward connection to another amplifier, for
example when used for “bi-amplification”.
LED will light to confirm that the unit is
ready for use.
Select the required audio input source on
your pre-amplifier, and advance the volume
control to obtain the preferred sound level.
For the best results we recommend that
you use either Musical Fidelity X-LINX
“no-nonsense” cables for this connection or
the highly rated Nu-Vista interconnects
with integral RFI suppression. Various
lengths are available in the Nu-Vista inter-
connect range.
LOUDSPEAKER CONNECTIONS
Connect your loudspeakers to either of the
two pairs of loudspeaker terminals situated
on the back panel marked as LEFT and
RIGHT SPEAKER OUTPUT. The
wiring must be “in phase”, namely, the +
and - terminals must be connected to the
left and right speakers the same way round.
Note: - the combined load impedance
must not be less than 4 ohms.
CR
Issue 1: April 2002
A3.2
Power
Instructions for Use Page 5 of 7
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TROUBLESHOOTING
Basic problem solving with an amplifier is similar to troubleshooting 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:
Problem
Possible Cause
Remedy
No power when MAINS
Mains plug not inserted
Plug in securely
POWER switch is operated fully into rear socket
No sound
Tape monitor function has
been selected on the pre-
amplifier
Switch off tape monitor
at the pre-amplifier
Wrong connections between
Check audio input lead
connections
CR
pre-amplifier and the A3.2
Speakers not connected, or
incorrectly wired
Check speaker cables
The sound is not precise,
lacking bass and stereo
image
Speakers are connected out of
phase, i.e. connections to one-
speaker (+ and -) are reversed
Ensure method of conn-
ection is the same for left
and right speakers
If none of these actions effect a cure, please contact your dealer, or an authorised Musical
CR
Fidelity service agent. Remember, never open the case of the A3.2
self, as this will invalidate the guarantee.
Power amplifier your-
CR
Issue 1: April 2002
A3.2
Power
Instructions for Use Page 6 of 7
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SPECIFICATIONS
A3.2 CR
POWER AMPLIFIER
Power output
130 Watts per channel into 8 Ohms
Total harmonic distortion
Frequency response
Channel separation
Audio gain
< 0.01% 20Hz to 20kHz
10Hz to 20kHz ±0.1dB
> 85dB 20Hz to 20kHz
30dB (31.5 times)
Input impedance
31K Ohm
Signal / noise ratio, reference full output
> 105dB unweighted
> 120dB ‘A’- weighted
Power consumption
Dimensions
600 Watts maximum
440 mm wide
100 mm high including feet
395 mm deep including terminals
Power requirements
Weight
100 / 115 / 230V AC, 50 / 60Hz
(factory preset)
15 kg unit only, unboxed
17 kg in shipping carton
Standard accessories
IEC type mains lead
Musical Fidelity reserves the right to make improvements which may result in specification or feature changes without notice.
CR
Issue 1: April 2002
A3.2
Power
Instructions for Use Page 7 of 7
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