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M250

Amplifier                            Instructions for Use  Page 2 of 8

Issue 4:  May 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 M250 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 elec-
trical 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.

Содержание M250

Страница 1: ...cal Fidelity M250 monobloc power amplifier Used properly and carefully it should give you many years of outstanding musical reproduction 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 ...

Страница 2: ... 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...

Страница 3: ... 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 There are fuse...

Страница 4: ...Y CI RCUM STAN CES N O USER SERVI CEABLE CO M PO NEN TS I NSI DE REFER SERVI CI NG TO Q UALI FI ED EN G I N EER LINE INPUT LOOP OUTPUT O N O FF TRIGGER IN TRIGGER OUT 3 4 5 6 Front panel layout 1 OPERATE indicator LED blue 2 Power status button see page 6 3 POWER on indicator LED orange Back panel layout 3 Speaker output see page 5 4 Speaker output see page 5 5 Power switch 6 IEC type mains inlet ...

Страница 5: ...olume control on your preampli fier to minimum and switch on its power All input output and power connections should be made with the mains power switched OFF INPUT CONNECTIONS As the M250 is a mono power amplifier two are required for stereo operation and further units can be used for multi channel surround systems or bi amplification etc The M250 can be used with a preamplifier or any audio line...

Страница 6: ...o input signal present when mains power is applied to the M250 it will turn on immediately with the OPERATE LED lit Trigger Mode The M250 responds to a trigger on con trol voltage of between 5 and 12 volts posi tive or negative received via the 3 5mm TRIGGER IN socket on the rear panel The first trigger pulse received after apply ing mains power will turn the amplifier on and cancel the audio sens...

Страница 7: ... the case of the M250 power amplifier yourself as this will invalidate the guarantee 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 Switch off tape monitor been selected on the pre at the pre amplifier amplifier Wrong connections between Check audio input lead pre amplifie...

Страница 8: ...31K Ohm Input sensitivity for full power output into 8 Ohms 1 42 Volts Signal noise ratio reference full power output 115dB A weighted Input 1 RCA connector Outputs 1 amplifier channel via 2 pairs of speaker binding posts 1 RCA loop output socket Power requirements 100 115 230V AC 50 60Hz factory preset 1000 Watts maximum into 8 Ohms load 70 Watts idle Dimensions 192 mm 7 6 inches wide 125 mm 4 9 ...

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