Musical Fidelity SUPERCHARGER 750K User Manual

SUPERCHARGER

750K

MONOBLOCK BRIDGED POWER AMPLIFIER

INSTRUCTIONS FOR USE

Thank you for purchasing the Musical Fidelity
Supercharger 750K monoblock.
The Supercharger 750K uses the latest in low
distortion circuitry in a bridged configuration
which delivers 750 watts rms.
The Supercharger 750K is designed to increase
the dynamic range of an existing lower powered
amplifier (from 50 watts to 200 watts) to a
maximum of 750 watts. The dynamic range will
increase by up to 10dB. This does not
necessarily mean that the average listening level
will be much louder; it’s just that musical
transients will now be delivered without
distortion or limiting. Overall the listening
experience is greatly improved because of
dramatically lower distortion and increased
dynamic range.
The 750K accepts both speaker level and line
level inputs. When driven from an existing
amplifier the sound quality is greatly improved
because the 750K presents an easy load for the
existing amplifier to drive and at the same time
gives up to 10dB increase in dynamic range.
Alternatively, the Supercharger 750K can be
used as a conventional power amplifier driven
by a high quality preamp.

The Supercharger 750K is a perfect answer to
improve dynamic range in a single beautifully
engineered package. Used properly and
carefully, it should give 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 there are further questions about any Musical
Fidelity component, please consult the dealer
from whom it was purchased, who is there to
help and give advice.

Supercharger 750K

CONTENTS

PAGE Section
3

4 General advice

5 Item disposal information -

6 Installation

7 Connections

8 Amplifier operation

9 Amplifier problems?

10 Amplifier specifications -

11 Manual history

Safety information

- Mains plug (U.K. only)
Modification warning

- - Installation precautions
User information

EU disposal information

- Introduction
Installation
Audio connection
Cleaning

- Illustrations - front and rear panels

- Operation and features

- Basic Amplifier fault finding

Typical specifications, accessories
And dimensions

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Supercharger 750K

SAFETY INFORMATION

IMPORTANT! (U.K. only)

This unit is supplied in the U.K. with 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 p lug 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:

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.

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Supercharger 750K

INSTALLATION PRECAUTIONS and USER INFORMATION

Your new 750K 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 750K 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.

This unit features a BRIDGED speaker outp ut and should NOT be grounded on either speaker output terminal as both
terminals are effectively “hot”, i.e. carry signal . Please check if using any active “sub”, electrostatic, or other non
standard potentially grounded speaker types directly conn ected to the outputs of the Supercharger 750K. Consult sp eaker
manual or supplier if in doubt.

Do not use near water, or place water-filled containers on the 750K, 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 750K 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 750K please quote the serial number located on the rear panel of
the unit.

GENERAL ADVICE

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