Musical Fidelity F-25 Owners manual
F25 REMOTE CONTROL STEREO
PREAMPLIFIER
INSTRUCTIONS FOR USE
Thank you for purchasing the Musical Fidelity
F25 Preamplifier. Used properly and carefully, it
should give you many years of outstanding musical
reproduction.
The F25 is the result of many years painstaking
research and development and is designed for
ultra-high definition performance. The F25 is
equipped with full remote control facilities.
The F25 operates in Class A. It has sound quality
equal to, or better than any preamplifier currently
available. We hope you will be delighted with your
purchase.
Dust regularly with a soft duster or soft brush but
do not use cleaning or polishing agents - they may harm
the surface finish.
If you have any questions about anything in your
audio system, please consult your dealer who is there
to help and advise you.
Instructions For Use. Page 1F25
PLEASE READ
IMPORTANT!
This unit is supplied in the UK with a mains lead fitted with a moulded 13 amp
plug. If, for any reason, you need to cut off this plug, please observe the following
safety precautions. Please dispose of the cut-off plug safely. It must not be plugged
into a mains power supply.
The wires in the mains lead supplied with this appliance are coloured in ac-
cordance 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 termi-
nal in the plug which is marked with the letter E or coloured green or green-andyellow, 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 10 amp fuse must be used.
WARNING - Radio Frequency Interference (RFI)
This hi-fi product has been tested to ensure that its operation will not be adversely affected by normal background levels of RFI. It is possible that if this product is subjected to abnormally high levels of RFI the unit may be susceptible and not
perform as expected. In the unlikely event of this happening on a regular basis,
please contact Musical Fidelity's service department.
The unit has also been tested to ensure that it does not radiate excessive levels
of RFI that could affect other pieces of electronic or electrical equipment.
The electronics in modern hi-fi equipment is complex and hence may be damaged by lightning. It is possible that during electrical storms the operation of some
equipment may be adversely affected. For complete protection of your hi-fi system
during such storms, mains plugs should be removed from sockets and aerial leads
disconnected.
Always ensure that when disconnecting and reconnecting your hi-fi equipment
the mains supply is switched off.
Instructions For Use. Page 2F25
INSTALLATION
INSTALLATION PRECAUTIONS
Your new F25 is designed and built to provide trouble-free performance but it
is necessary to observe a few precautions. Please ensure that you have complied with
them before you connect any AC power to your amplifier. Retain this guide for
future reference.
þ Heed all warnings on the back of
the unit.
þþ Place your F25 where there is
adequate ventilation.
þþ Only connect the unit to a power
supply of the type marked on the back
of the unit.
þþ Position the power supply lead
and signal interconnect leads where
they are not likely to be walked on or
trapped by items placed on them.
þþ Fit 2 x “AA” size batteries into
the remote control. These must be
alkaline types. Please observe the
correct polarity of + and - when fitting.
ýý Do not use near water.
ýý Do not place the preamplifier
near direct heat sources such as radiators or other equipment that produces
heat.
ýý Do not remove any covers or try
to gain access to the inside. The warranty will be invalid if the unit has
been tampered with. There are no
user adjustments within. Refer all
service work to an authorised Musical
Fidelity agent.
ýý There are 3 fuses in the F25. In
the unlikely event that one blows, take
your F25 to your audio dealer. Do
NOT try to replace the fuse yourself
or you will invalidate the warranty.
BEFORE YOU SWITCH ON
You should make all connections to the F25 before switching on.
Follow this routine before you listen for the first time, and each time you
change any connections.
1 Check all the inputs and outputs to the F25.
2 Then check again.
3 Turn the volume control to nil.
4 Now you can switch on the power and carefully advance the volume to
the level you want and enjoy the music.
Instructions For Use. Page 3F25
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