Musical Fidelity Supercharger 550-K Owners manual

SUPERCHARGER

550K

MONOBLOCK BRIDGED POWER AMPLIFIER

INSTRUCTIONS FOR USE

Thank you for purchasing the Musical
Fidelity Supercharger 550K monoblock.
The Supercharger 550K uses the latest in
low distortion circuitry in a bridged
configuration which delivers 550 watts rms.
The Supercharger 550K is designed to
increase the dynamic range of an existing
lower powered amplifier (from 50 watts to
200 watts) to 550 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 550K accepts both speaker level and
line level inputs. When driven from an
existing amplifier the sound quality is
greatly improved because the 550K 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 550K can
be used as a conventional power amplifier
driven by a high quality preamp.

The Supercharger 550K 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 550K

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

Issue 1: 16th June 2007

Page 2 of 11

Supercharger 550K

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 MODIFICATI ON S T O THIS PRO DUCT 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: 16th June 2007

Page 3 of 11

Supercharger 550K

INSTALLATION PRECAUTIONS and USER INFORMATION

Your new 550K 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 550K 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 550K. Consult sp eaker
manual or supplier if in doubt.

Do not use near water, or place water-filled containers on the 550K, 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 550K 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 550K please quote the serial number located on the rear panel of
the unit.

GENERAL ADVICE

Issue 1: 16th June 2007

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