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Issue 4 May 2004
X-150 Integrated Amplifier Page 6 of 8 X-150 Integrated Amplifier Page 3 of 8
INSTALLATION PRECAUTIONS and USER INFORMATION
Your new X-150 Integrated amplifier 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 X-150 Integrated amplifier 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, flower
vases 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 heat sources such as radiators, direct sunlight or other equipment.
The case of this amplifier can run at high temperatures - operate the unit in a well ventilated
area, and do not touch the cabinet sides or top 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 adjustments.
Refer all service work to an authorised Musical Fidelity agent.
NOTE: Unauthorised opening of the equipment will invalidate any warranty claims.
There are fuses inside the X-150 amplifier. In the unlikely event that one blows, refer the unit to
your audio dealer. Do NOT try to replace the fuses yourself as this will invalidate the warranty.
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 X-150 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 back
-
ground 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.
All input, output and power connections
should be made with the mains power
switched OFF.
INPUT CONNECTIONS
The X-150 Integrated amplifier has a pair
of RCA inputs on the rear panel marked
PHONOwhich are intended for moving
magnet (MM) pickups.
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 X-150 also has three “line level”
inputs 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 three pairs
of sockets on the rear panel are marked
INPUT 2,3and 4 corresponding with
the blue function indicator LEDs on the
front panel.
Connect the left and right outputs from
your audio components to each of the
three sets of RCA sockets, to suit your
own order of preference.
Connect the the X-150’s TAPE RECord
output sockets to the line input sockets of
your tape deck.
CONNECTIONS GENERAL ADVICE
OUTPUT CONNECTIONS
Connect your loudspeakers to the pairs of
terminals on the back panel marked as
LEFTand RIGHTSPEAKERoutputs.
Note: the combined load impedance
must not be less than 4 ohms.
PRE-AMPLIFIER OUTPUT
The X-150 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 X-150’s
speaker outputs are used to drive the
speaker’s “tweeter” (high audio frequen-
cies), and an external stereo amplifier
drives the “woofer” (low frequencies).
The X-150’s PRE OUTRCA sockets
would therefore be connected to the input
of the external “woofer” amplifier in this
example.
If you are in doubt about bi-amplifica-
tion, please contact your dealer for
advice.