Musical Fidelity A3.2 Manual de usuario

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

Issue 1: March 2002

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 2of 9

Issue 1: March 2002

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 3of 9

Issue 1: March 2002

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 4of 9

Issue 1: March 2002

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 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

1Power on indicator LED

2POWER on/off switch

3Volume control with LED

4Infra Red Receiver for

remote control

5PHONO input select button and

LED

6CD input select button and LED

7TUNER input select button and

LED

8AUXILLIARY 1

input select button and LED

9AUXILLIARY 2

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 AUXILLIARY 1 input sockets

19 AUXILLIARY 2 input sockets

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 5of 9

REMOTE CONTROL

Issue 1: March 2002

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.

The MUTE button mutes the SPEAKER output and PRE-OUT sockets. To show that the

amplifier is muted, the blue LED in the volume control knob goes out. Press the MUTE button

again to cancel mute function, 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.

VOLUME (UP)

VOLUME (DOWN)

MUTE button

TUNER input select

PHONOpickup

input select

AUXILLIARY 1

input select

CD input select

TAPE input select

AUXILLIARY 2

input select

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

Issue 1: March 2002

Various lengths are available in the Nu-

Vista interconnect range. Please contact

your local dealer for more information.

OUTPUT CONNECTIONS

Connect your loudspeakers to the terminals

on the back panel marked as LEFT and

RIGHT SPEAKER outputs.

PRE-AMPLIFIER OUTPUT

The A3.2 Integrated amplifier has its pre-

amplifier output available from RCA sock-

ets on the back panel marked PRE-OUT,

and is controlled 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 exam-

ple.

If you are in doubt about bi-amplification,

please contact your dealer for advice.

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).

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 moving coil

(MC) pickups.

The phono input sensitivity requirement

can be changed from MM to MC by press-

ing the push-button switch located 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 amplifier also has five “line

level” inputs which are electrically identi-

cal, and therefore suitable for use with any

source component having an output of at

least 300mV. The sockets on the rear

panel are marked CD, TUNER, AUXIL-

LIARY 1, AUXILLIARY 2, and TAPE,

to correspond with function buttons on the

front panel.

Connect the left and right outputs from

your CD player, tuner or phono/record

deck to the appropriate RCA input sockets

on the back panel.

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.

For the best results we recommend using

either Musical Fidelity X-LINX "no-non-

sense" cables for this connection or the

highly rated Nu-Vista leads with integral

RFI suppression. (continued)

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

OPERATION

Issue 1: March 2002

STARTING . . . .

Press the POWER button on the A3.2

amplifier - the red 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 LED on the volume

knob 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 remote control, and adjust

the volume control to obtain the preferred

sound level.

TAPE RECORDING

To record, simply select the required source

with the input selector button on the front

panel or remote control. This source will

now be routed to the A3.2’s TAPE

RECORD output for recording by the

external tape deck. You will also be able to

hear the selected source through the loud-

speakers.

Note - adjustment of the volume control has

no effect on the recording level.

OFF TAPE MONITORING

The A3.2 amplifier has a single tape circuit

with facilities for off-tape monitoring with

3-head tape decks.

In conjunction with a 3-head cassette deck,

off-tape monitoring allows the user to com-

pare 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 orig

inal source sound and the recorded version,

allowing direct comparison. The blue LED

just above the monitor button is lit when the

tape monitor function is operating, confirm-

ing 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 8of 9

Issue 1: March 2002

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:

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

Wrong connections between Check audio input lead

input sources and the A3.2 connections

amplifier

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 9of 9

SPECIFICATIONS

Issue 3: March 2002

Musical Fidelity reserves the right to make improvements which may result in

specification or feature changes without notice

Power output at 1kHz for 0.5% distortion: 115 Watts per channel into 8 ohms

Total harmonic distortion 1kHz: < 0.007%

Frequency response 10Hz to 20kHz ± 0.3dB

Channel separation: > 85dB 20Hz to 20kHz

Input sensitivity line inputs: 300mV, 200k ohms

phono input MM 3.5mV, 47k ohms

phono input MC 350µV, 47k ohms

Signal / noise ratio line inputs: > 103dB ‘A’-weighted,

(ref.120 Watts, 8 ohms ) > 95dB unweighted

phono MM: > 96dB ‘A’-weighted

> 89dB unweghted

phono MC: > 88dB ‘A’-weighted

> 82dB unweighted

Power requirement: 100 / 115 / 230Volts AC 50 / 60Hz

(factory pre-set)

Power consumption: 400 Watts maximum

Dimensions: 440 mm wide

95 mm high including feet

400 mm deep including terminals and volume knob

Weight: 12.5kg unit only, unboxed

14.5kg in shipping carton

Standard accessories IEC type mains lead

Remote control (universal)

2 batteries (type SUM-4, AAA, LR03)

A3.2

Dual Mono Integrated Amplifier

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