Musical Fidelity A5 Bedienungsanleitung

Issue 1 : July 2004 A5 Integrated Amplifier Instructions for use Page 1of 9

DUAL MONO INTEGRATED AMPLIFIER

INSTRUCTIONS FOR USE

Thank you for purchasing the Musical Fidelity A5 Integrated amplifier.

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

reproduction.

Aesthetically, the A5 Integrated amplifier is a perfect match for the A5 CD player.

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.

Issue 1 : July 2004 A5 Integrated Amplifier Instructions for use Page 2of 9

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 the 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 A5 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.

Issue 1 : July 2004 A5 Integrated Amplifier Instructions for use Page 3of 9

GENERAL ADVICE

INSTALLATION PRECAUTIONS and USER INFORMATION

Your new A5 Integrated 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 A5 Integrated 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, a

flower vase 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 direct heat sources such as radiators, direct sunlight or other

equipment.

Do not remove any covers or try to gain access to the inside. There are no internal

adjustments or fuses you can replace yourself. Refer all service work to an authorised

Musical Fidelity agent.

Note: Unauthorised opening of the equipment will invalidate any warranty claim.

Dust regularly with a soft cloth 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 A5 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

interference. However, if a problem persists, please contact your Musical Fidelity agent.

Issue 1 : July 2004 A5 Integrated Amplifier Instructions for use Page 4of 9

CONNECTIONS and FACILITIES

7 10

1 2 3 4 5 6 8 9 11 12

FRONT PANEL

1 Power on indicator LED

2 POWER mains on/off switch

3 Mute indicator LED

4 Tape MONITOR button and LED

5 PHONO input select button and LED

6 CD input select button and LED

7 Volume control

8 Super Audio CD input select button and LED

9 TUNER input select button and LED

10 Infra Red Receiver window for remote control

11 Home Theatre DIRECT input select button

and LED – see page 6

12 TAPE input select button and LED

REAR PANEL

13 RIGHT SPEAKER output terminals

14 Phono earth terminal

15 PHONO input sockets

16 CD input sockets

17 Super Audio CD input sockets

18 TUNER input sockets

19 Home Theatre DIRECT input sockets - page 6

20 TAPE input sockets

21 TAPE RECord output sockets - see page 7

22 PRE-OUTput sockets – see page 6

23 LEFT SPEAKER output terminals

IEC mains power inlet socket

13 14 15 16 17 18 19 20 21 22 23

Issue 1 : July 2004 A5 Integrated Amplifier Instructions for use Page 5of 9

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 A5 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 turn the motorised volume

control in the required direction.

Pressing the MUTE button disables the SPEAKER output and PRE-OUT sockets, but not does

not affect TAPE RECord output. A red MUTE LED on the front panel lights to show that the

amplifier is not producing power to the loudspeakers. Pressing the MUTE button again cancels

mute function, and the red LED goes out.

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, size LR03 or AAA, manganese alkaline type.

Do not dispose of used batteries in a fire.

(Amplifier function buttons only) CD input select

TUNER input select

PHONO pickup

input select

SACD input select

Home Theatre DIRECT

input select (see page 6)

VOLUME (up)

VOLUME (down)

TAPE MUTE

input select button

Issue 1 : July 2004 A5 Integrated Amplifier Instructions for use Page 6of 9

CONNECTIONS

All input, output and power connections

should be made with the mains power

switched OFF.

INPUT CONNECTIONS

The A5 Integrated amplifier has a pair of

RCA type phono input sockets intended for

use with moving magnet (MM) pickups.

Do not use for any other purpose.

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 A5 also has four stereo pairs of RCA

“line level” input sockets 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, SACD, TUNER,

and TAPE, corresponding with function

selector buttons on the front panel.

The HT DIRECT sockets are intended for

home theatre use. When selected, they are

routed inside the A5 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.

SPEAKER OUTPUT CONNECTIONS

Connect your loudspeakers to the terminals

on the back panel marked as LEFT and

RIGHT SPEAKER outputs.

PRE-AMPLIFIER OUTPUT

The A5 Integrated amplifier has its pre-

amplifier output available from RCA

sockets 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

components separately, giving noticeable

improvement in clarity, imaging and bass

weight.

In this arrangement, typically the A5’s

speaker outputs are used to drive the

speaker’s “tweeter” (high audio

frequencies), and an external stereo

amplifier drives the “woofer” (low

frequencies). The A5’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.

TAPE RECORDER CONNECTION

The A5 Integrated has a single tape circuit

with facilities for off-tape monitoring with

3-head tape decks (see page 7).

The tape deck's left and right line outputs

are routed to the amplifier's TAPE (input)

sockets, and the tape deck's line inputs are

connected to the amplifier’s TAPE

RECord (output) sockets.

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).

Issue 1 : July 2004 A5 Integrated Amplifier Instructions for use Page 7of 9

OPERATION

STARTING . . . .

Press the POWER button on the front

panel of the A5 amplifier - the blue

POWER LED above the button will light

indicating that the unit is ready for use.

However, for about five seconds no sound

will be heard from your speakers, and the

red MUTE LED near the button 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 accidentally, as

otherwise 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 A5’s

TAPE RECord output for recording 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

In conjunction with a 3-head cassette deck,

off-tape monitoring allows the user to

compare recorded sound with the original

whilst a recording is being made (see page

6 for connection details). To do this, first

select the required source in the normal

way and start recording.

The TAPE MONITOR button on the front

panel can now be used to switch between

the original source sound and the recorded

version, allowing direct comparison. The

blue LED just above the button is lit when

the tape monitor function is operating,

confirming that the recorded sound is

selected.

On some 3-head tape decks there is an

additional ‘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.

Issue 1 : July 2004 A5 Integrated Amplifier Instructions for use Page 8of 9

PROBLEMS?

Basic problem-solving with an amplifier is similar to troubleshooting other electrical or electronic

equipment. Always check the most obvious possible causes first, such as the following examples:

Problem Probable Cause Remedy

No power when POWER

button is pressed

Mains power plug is not fully

inserted into rear socket

Plug in securely

No sound Tape monitor function has

been selected

Switch off tape monitor

Mute function is still active

(mute LED is still on)

Press the MUTE button on the

remote control to cancel

Wrong connections between

input sources and the A5

Check audio input lead

connections

Speakers not connected, or

incorrectly wired

Check speaker cables

Sound is not precise, lacking in

bass and stereo image

Speakers are connected out of

phase, i.e., connections to one

speaker (+ and -) are reversed

Ensure speakers are connected

correctly

Hum Audio connector plug not fully

pushed in

Insert plug securely

Remote control does not work Amplifier’s POWER switch is

set to off

Set switch to on

One or more batteries fitted the

wrong way round

Insert batteries correctly

Batteries are flat Change batteries – do not mix

old and new ones

Remote control is not pointed

directly towards the front panel

of the amplifier

Ensure there is no obstruction

between the remote control

and amplifier front

Remote control range has

greatly reduced

Batteries are running out Change batteries – do not mix

old and new ones

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 A5 Integrated amplifier yourself, as this will

invalidate the guarantee.

Issue 1 : July 2004 A5 Integrated Amplifier Instructions for use Page 9of 9

A5 DUAL MONO

INTEGRATED AMPLIFIER SPECIFICATIONS

Output : Power : 250 Watts per channel into 8 Ohms (24dBW),

400 Watts per channel into 4 Ohms

Voltage, RMS : 45 Volts 20Hz to 20kHz

Voltage, Peak-to-peak : 127.3 Volts

Current peak-to-peak 75 Amps

Damping factor : 140

Output devices per channel : 4

Pre-out impedance : 50 Ohms

Line inputs :

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

Signal / noise ratio > 100dB ‘A’-weighted

Input sensitivity for 250 Watts into 8 Ohms 330mV

Input impedance 220k Ohms

Overload margin 26dB

Channel separation > 70dB typical

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

Home Theatre Direct input :

Input sensitivity 30dB gain (31.5 times) nominal

Phono input :

Frequency response reference

-20.0

-15.0

-10.0

-5.0

0.0

5.0

10.0

15.0

20.0

20.0 31.5 50.0 80.0 125 200 315 500 1000 1600 2500 4000 6300 10000 16000

RIAA

PHONO

RIAA/IEC

PHONO RESPONSE

Frequency (Hz)

IEC RIAA - see graph . . . .

Signal / noise ratio > 96dB ‘A’-weighted

Input sensitivity 2.5mV (moving magnet)

Input impedance 47k Ohms

Overload margin 24dB

Inputs : 4 pairs line level RCA connectors,

1 pair (Home Theatre) direct power amplifier input RCA connectors

1 pair phono (moving magnet) 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),

700 Watts maximum into 8 Ohms, 35 Watts idle

Weight : 16.6 kg, 36.6 lbs unit only, unboxed

19.1 kg, 42.1 lbs in shipping carton

Dimensions : 440 mm, 17.3 inches wide

125 mm, 4.9 inches high including feet

400 mm, 15.75 inches deep including terminals

Standard accessories : IEC type mains lead (10-Amp type),

remote control (A5, universal type),

2 batteries size LR03 or AAA, manganese alkaline type

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