Musical Fidelity A3.2 Manuel utilisateur

A3.2 Integrated Amplifier Instructions for use Page 1 of 9

Issue B: March 2003 (D)

MUSICAL FIDELITY A3.2 DUAL MONO INTEGRATED AMPLIFIER

POWER

PHONO TUNER AUX 2 MONITOR

CD AUX 1 TAPE

I.R.R.

A3.2

DUAL MONO INTEGRATED AMPLIFIER

INSTRUCTIONS FOR USE

Thank you for purchasing the Musical Fidelity A3.2 Integrated amplifier.

Used properly and carefully, it should give you many years of outstanding

musical reproduction.

Æsthetically, the A3.2 Integrated amplifier is a perfect match for the

A3.2 CD player and the A3.2 Tuner.

Together, they form one of the finest hi-fi systems available.

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.

A3.2 Integrated Amplifier Instructions for use Page 2 of 9

Issue B: March 2003 (D)

SAFETY INFORMATION

IMPORTANT! (U.K. only)

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 remove the fuse holder and dispose of

the plug safely, out of reach of children. It must not be plugged into a mains outlet.

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 13 amp fuse must be used.

WARNING:

The A3.2 is a powerful amplifier and must necessarily supply high voltages

through the loudspeaker terminals. Therefore, to avoid any possibility of an

electric shock DO NOT TOUCH THE SPEAKER TERMINALS when the unit is

being used. To comply with BSEN60065 safety regulations, the 4mm “banana”

plug holes have been fitted with plastic blanking pieces. Removal of these will

invalidate any electrical safety approval of this product.

WARNING:

Any modifications to this product not expressly approved by Musical Fidelity who

is the party responsible for standards compliance could void the user’s authority to

operate this equipment.

A3.2 Integrated Amplifier Instructions for use Page 3 of 9

Issue B: March 2003 (D)

GENERAL ADVICE

INSTALLATION PRECAUTIONS and USER INFORMATION

Your new A3.2 Integrated 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.

Only connect the A3.2 Integrated 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 cabinet sides or top 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.

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 warranty.

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.

If after-sales service is required, to help your dealer identify the A3.2 Integrated amplifier

please quote the serial number located on the rear panel of the unit.

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.

A3.2 Integrated Amplifier Instructions for use Page 4 of 9

Issue B: March 2003 (D)

CONNECTIONS and FACILITIES

MUSICAL FIDELITY

A3.2 DUAL MONO INTEGRATED AMPLIFIER

MANUFACTURED IN ENGLAND BY MUSICAL FIDELITY

RIGHT SPEAKER OUTPUT LEFT SPEAKER OUTPUT

PHONO CD TUNER AUX 1

AUX 2

HOME

THEATRE

DIRECT TAPE TAPE REC PRE OUT

POWER CONSUMPTION 400W

MM MC

THIS APPLIANCE

MUST BE

EARTHED

IMPORTANT

50/60Hz

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 FER FURTHER INFORMATION.

12 13 14 15 16 17 18 19 20 21 22 23 24

Front panel layout

1 Power on indicator LED

2 POWER on/off switch

3 Volume control with LED

4Infra Red Receiver for

remote control

5 PHONO input select button and LED

6 CD input select button and LED

7 TUNER input select button and LED

8 AUXILIARY 1

input select button and LED

9 AUXILIARY 2 (direct input)

input select button and LED

10 TAPE input select button and LED

11 Tape MONITOR button and LED

Back panel layout

12 Right SPEAKER OUTPUT

terminals

13 Phono moving magnet /

moving coil selection switch

14 Phono earth terminal

15 PHONO input sockets

16 CD input sockets

17 TUNER input sockets

18 AUXILIARY 1 input sockets

19 AUXILIARY 2 direct input

sockets (see page 6)

20 TAPE input sockets

21 TAPE RECORD output sockets

22 PRE-AMPLIFIER OUT sockets

23 Left SPEAKER OUTPUT

terminals

24 IEC mains power inlet

MUSICAL FIDELITY A3.2 DUAL MONO INTEGRATED AMPLIFIER

POWER

PHONO TUNER AUX 2 MONITOR

CD AUX 1 TAPE

I.R.R.

1 2 3 4 5 6 7 8 9 10 11

A3.2 Integrated Amplifier Instructions for use Page 5 of 9

Issue B: March 2003 (D)

REMOTE CONTROL

The blue buttons on the remote control enable main functions of the amplifier to be operated

from a convenient distance. Remaining buttons on this universal handset are for use with other

Musical Fidelity products, and have no effect on the A3.2 Integrated amplifier.

Equivalent buttons on the remote handset have the same functions as those on the front panel of

the unit.

As the remote control uses an invisible infra-red light beam, the transmitter must be pointed

directly towards the receiver window on the front of the amplifier, without visual obstruction

between them.

Pressing the volume-up or -down buttons on the remote handset will advance the motorised

volume control in the required direction.

Pressing the MUTE button mutes the SPEAKER output and PRE-OUT sockets, but has no

effect on the TAPE OUT sockets for recording. To show that the amplifier is muted, the blue

LED on the volume control knob goes out. Press the MUTE button again to cancel mute func-

tion, and the blue LED will light again.

If the range of the remote control greatly decreases, replace the batteries with new ones.

Do not mix old and new batteries - two are required, type SUM-4, AAA or LR03. Do not

dispose of used batteries in a fire.

VOLUME (UP)

VOLUME (DOWN)

MUTE button

TUNER input select

PHONO pickup

input select

AUXILIARY 1

input select

CD input select

TAPE input select

AUXILIARY 2

(direct) input select

A3.2 Integrated Amplifier Instructions for use Page 6 of 9

Issue B: March 2003 (D)

Connect the left and right outputs from

your CD player to the CD sockets, your

tuner to the TUNER sockets and any other

source to the AUXILIARY 1 RCA input

sockets.

Connect the A3.2’s TAPE input sockets to

the line output of your tape recorder, and

A3.2’s TAPE RECORD output sockets to

the line input sockets of the tape deck.

OUTPUT CONNECTIONS

Connect your loudspeakers to either of the

two pairs of terminals on the back panel

marked as LEFT and RIGHT SPEAKER

outputs. Note: the combined load imped-

ance must not be less than 4 ohms.

PRE-AMPLIFIER OUTPUT

The A3.2 amplifier has its pre-amplifier

output available from RCA sockets on the

back panel marked PRE-OUT, and is con-

trolled by the volume adjustment.

This is to allow “bi-amplification” using

suitable external amplifiers and crossover

networks to power the speaker drive com-

ponents separately, giving noticeable

improvement in clarity, imaging and bass

weight.

In this arrangement, typically the A3.2’s

speaker outputs are used to drive the speak-

er’s “tweeter” (high audio frequencies), and

an external stereo amplifier drives the

“woofer” (low frequencies). The A3.2’s

PRE OUT RCA sockets would therefore

be connected to the input of the external

“woofer” amplifier in this example.

If you are in doubt about bi-amplification,

please contact your dealer for advice.

CONNECTIONS

All input, output and power connections

should be made with the mains power

switched OFF.

INPUT CONNECTIONS

The A3.2 Integrated amplifier has one pair

of phono inputs, which can be used either

for moving magnet (MM) or the lower out-

put moving coil (MC) pickups.

The phono input sensitivity requirement

can be changed from MM to MC by press-

ing the MM/MC push-button switch locat-

ed on the rear panel.

Important - Do not operate the MM/MC

switch with the volume control turned up.

Some turntable/pickup arm combinations

are fitted with an extra wire for chassis

earthing. This should be connected to the

earth terminal on the back panel.

The A3.2 also has four “line level” inputs

controlled by the internal volume setting.

They all have the same input sensitivity,

and are therefore suitable for use with any

source component having an output of at

least 300mV. The four sockets on the rear

panel are marked CD, TUNER, AUXIL-

IARY 1, and TAPE, corresponding with

function selector buttons on the front

panel.

The AUXILIARY 2 (HOME THEATRE

DIRECT) sockets are intended for home the-

atre use. When selected, they are routed

inside the A3.2 directly to the power

amplifier circuit, which is not controlled

by the volume adjustment.

Do not therefore connect these sockets to a

source without its own volume control.

A3.2 Integrated Amplifier Instructions for use Page 7 of 9

Issue B: March 2003 (D)

OPERATION

BEFORE SWITCHING ON

Plug the accessory IEC mains lead into the

rear panel socket, then the other end into a

wall outlet.

Turn the volume control on the front panel

to minimum (anticlockwise).

STARTING . . . .

Press the POWER button on the A3.2

amplifier - the blue power LED on the front

panel will light indicating that the unit is

ready for use. However, for about five sec-

onds no sound will be heard from your

speakers, and the blue mute LED on the

volume control will not be lit, confirming

initial mute action.

Unless using your amplifier for off-tape

monitoring (see paragraph opposite )

ensure that the TAPE MONITOR button

has not been pressed accidently, as other-

wise no sound will be heard through the

speakers.

Select the required audio input source by

pressing an appropriate function button on

the front panel or the remote control, and

adjust the volume control to obtain the pre-

ferred sound level.

TAPE RECORDING

To record, simply select the required source

with the input selector button on the front

panel. This source will now be routed to the

A3.2’s TAPE RECORD output for record-

ing by the external tape deck.

You will also be able to hear the selected

source through the loudspeakers.

Note - adjustment of the volume control has

no effect on the recording level.

OFF - TAPE MONITORING

The A3.2 Integrated amplifier has a single

tape circuit with facility for off-tape moni-

toring.

In conjunction with a 3-head cassette deck,

off-tape monitoring allows the user to com-

pare the recorded sound with the original

whilst a recording is being made. To do

this, first select the required source in the

normal way and start recording.

The MONITOR button on the front panel

can now be used to switch between the

source signal and the recorded version

allowing direct comparison. The blue LED

just above the MONITOR button confirms

that the recorded sound is selected.

On some 3-head tape decks there is an addi-

tional 'tape/source' switch which must be in

the 'tape' position for the above to work.

If in doubt, please refer to your tape deck

operating manual.

A3.2 Integrated Amplifier Instructions for use Page 8 of 9

Issue B: March 2003 (D)

PROBLEMS ?

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:

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 A3.2 Integrated amplifier your-

self, as this will invalidate the guarantee.

Problem Possible Cause Remedy

No power when POWER Mains plug not inserted Plug in securely

button is pressed fully into rear socket

No sound Tape monitor function has Switch off tape monitor

been selected

Mute function is still active Press the mute button again

(mute LED is off) to cancel

Wrong connections between Check audio input lead

input sources and the A3.2 connections

Speakers not connected, or Check speaker cables

incorrectly wired

Sound is not precise, lacking Speakers are connected out of Ensure speakers are

in bass and stereo image phase, i.e., connections to one connected correctly

speaker (+ and -) are reversed

A3.2 Integrated Amplifier Instructions for use Page 9 of 9

SPECIFICATIONS :

Issue B: March 2003 (D)

Musical Fidelity reserves the right to make improvements which may result in specification or feature changes without notice

Output: Voltage RMS: 30 Volts 20Hz to 20kHz

Peak: 85 Volts

Power: 115 Watts per channel into 8 Ohms (20.5dBW),

185 Watts per channel into 4 Ohms

Peak-to-peak output current: 24 Amps

Damping factor: 120

Output devices per channel: 2

Pre-output impedance: 50 Ohms

Line inputs:

Total harmonic distortion + noise, 20Hz to 20kHz < 0.01%

Signal / noise ratio > 98dB ‘A’-weighted

Input sensitivity for 115 Watts into 8 Ohms 250mV

Input impedance 220k Ohms

Overload margin 26dB

Channel separation > 70dB typical

Frequency response 20Hz to 20kHz, +0, -0.2dB

Auxiliary 2 (Home Theatre Direct) input:

Input sensitivity 30dB gain (31.5 times) nominal

Phono input:

Frequency response reference

IEC RIAA - see graph....

Signal / noise ratio > 94dB Moving Magnet ‘A’-weighted

> 88dB Moving Coil ‘A’-weighted

Input sensitivity 2.5mV Moving Magnet

350µV Moving Coil

Input impedance 47k Ohms

Overload margin 24dB

Inputs: 4 pairs line level RCA connectors,

1 pair (Aux 2) direct power amplifier input RCA connectors

1 pair phono (MC or MM, switchable) RCA connectors

Outputs: 2 amplifier channels via 1 pair per channel binding posts.

1 pair RCA audio outputs controlled by the volume,

1 pair RCA tape record fixed line level output.

Power requirement: 100 / 115 / 230Volts AC 50 / 60Hz (factory pre-set),

400 Watts maximum into 8 Ohms

28 Watts idle

Weight: 12.5 kg, 27.5 lbs unit only, unboxed Dimensions: 440 mm, 17.3 inches wide

14.5 kg, 31.9 lbs in shipping carton 95 mm, 3.75 inches high including feet

400 mm, 15.75 inches deep including terminals

Standard accessories: IEC type mains lead, remote control (universal), 2 batteries (type SUM-4, AAA, LR03)

A3.2

Dual Mono Integrated Amplifier

RIAA RESPONSE

-20

-15

-10

-5

16 32 63 125 250 500 1.2K 2.5K 5K 10K 20K

FREQUENCY

RIAA

PHONO

RIAA/IEC

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