Musical Fidelity X-80 User manual

Issue 4 May 2004X-80 Integrated Amplifier Page 1 of 8X-80 Integrated Amplifier Page 8 of 8
X-80 SPECIFICATIONS
INSTRUCTIONS FOR USE
Thank you for purchasing the Musical Fidelity
X-80 Integrated amplifier.
Used properly and carefully, it should give you many years of
outstanding musical reproduction.
Aesthetically, the X-80 Integrated amplifier is a perfect match for the
X-RAY CD player and X-PLORA FM tuner.
Together, they form one of the finest hi-fi systems available.
Dust regularly with a soft cloth 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.
X-80
DUAL MONO INTEGRATED AMPLIFIER
Output :Voltage RMS :21 Volts 20Hz to 20kHz, one channel loaded
Peak :59 Volts
Power :55 Watts one channel into 8 Ohms (17.4dBW)
85 Watts one channel into 4 Ohms
Peak-to-peak output current :28 Amps
Damping factor :77
Output devices per channel :2
Pre-output impedance :50 Ohms
Line inputs :
Total harmonic distortion + noise :< 0.02% 20Hz to 20kHz
Signal / noise ratio :> 93dB ‘A’-weighted
Input sensitivity for 55Watts, 8 Ohms :175mV
Input impedance :220k Ohms
Overload margin :29dB
Channel separation :> 55dB typical
Frequency response :20Hz to 20kHz, + 0, - 0.4dB
Input facilities :4 pairs line level RCA connectors
Output facilities :2 amplifier channels via 1 pair per channel binding posts.
1 pair RCA audio outputs controlled by the volume,
1 pair RCA tape record fixed line level output.
Power requirement :100 / 115 / 230Volts AC 50 / 60Hz (factory pre-set),
190 Watts maximum into 8 Ohms, 15 Watts idle.
Dimensions :218mm, 8.6 inches wide
98mm, 3.8 inches high (including feet)
339mm, 13.4 inches deep
(including knob and rear terminals)
Weight :6.5 kg, 14.3 lbs unit only, unboxed
8 kg, 17.7 lbs in shipping carton
Standard accessories :IEC type mains lead (10-Amp), remote control,
2 batteries size LR03 or AAA, manganese alkaline type
Musical Fidelity reserves the right to make improvements which may result in specification
or feature changes without notice.

Issue 4 May 2004X-80 Integrated Amplifier Page 7 of 8X-80 Integrated Amplifier Page 2 of 8
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
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.
BEFORE SWITCHING ON
Plug the accessory IEC mains lead into the
rear panel socket, then the other end into a
wall outlet.
Turn the volume control on the front panel
to minimum (anticlockwise).
STARTING. . . .
Press the POWERbutton on the X-80
amplifier - the blue power LED on the
front panel will light indicating that the
unit is ready for use. However, for about
six seconds no sound will be heard from
your speakers, and the red mute LED will
be lit, confirming initial mute action.
Select the required audio input source by
pressing the <or >function button on the
front panel one or more times.
Alternatively, direct access can be obtained
by pressing buttons 1, 2, 3 or 4 on the
remote control. In either case, a correspon-
ding blue indicator LED on the front panel
will light to confirm your choice.
Now adjust the volume control to obtain
the preferred sound level.
TAPE RECORDING
To record, simply select the required
source with the up or down input selector
button on the front panel, or directly from
the remote control. This source will now
be routed to the X-80’s TAPE RECORD
output for recording by the external tape
deck.
You will still also be able to hear the
selected source through the loudspeakers.
Note - adjustment of the volume control
has no effect on the recording level.
SAFETY INFORMATIONOPERATION

Issue 4 May 2004
X-80 Integrated Amplifier Page 6 of 8X-80 Integrated Amplifier Page 3 of 8
INSTALLATION PRECAUTIONS and USER INFORMATION
Your new X-80 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-80 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-80 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-80 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
background 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.
INPUTCONNECTIONS
The X-80 has four pairs of “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 four left
and right socket pairs on the rear panel
are marked INPUT 1, 2, 3and 4, corre-
sponding with the blue function indicator
LEDs on the front panel.
Connect the left and right outputs from
your audio components to each of the
four sets of RCA sockets to suit your
own order of preference.
Connect the X-80’s TAPE RECord out-
put sockets to the line input sockets of
the your tape deck.
CONNECTIONSGENERAL 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-80 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-80’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-80’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.

Issue 4 May 2004
X-80 Integrated Amplifier Page 4 of 8X-80 Integrated Amplifier Page 5 of 8
REMOTE CONTROL
Buttons on the remote control with blue-grey surround enable main functions of the ampli
-
fier to be operated from a convenient distance. Remaining buttons on this universal hand
-
set are for use with other Musical Fidelity products, and have no effect on the X-80
Integrated amplifier.
As the remote control uses an invisible infra-red light beam, the transmitter must be pointed
directly towards the receiver window on the front of the amplifier, without visual obstruc
-
tion between them.
Pressing button numbers 1, 2, 3 or 4 selects a corresponding amplifier input.
Pressing the MUTE
button mutes the SPEAKER output and PRE-OUT sockets, but has no
effect on the TAPE OUT sockets for recording. To show that the amplifier is muted, the
red LED on the front panel lights. Press the MUTE
button again to cancel mute function,
and the red LED will go out.
Pressing the volume-up or -down buttons on the remote handset will advance the motorised
volume control in the required direction. This action also cancels the mute function.
If the range of the remote control greatly decreases, replace the batteries with new ones.
Do not mix old and new batteries - two are required, size LR03 or AAA, manganese alka
-
line type. Do not dispose of used batteries in a fire.
CONNECTIONS & FACILITIESREMOTE CONTROL
Front panel layout
1POWER-on indicator LED (blue)
2POWER on/off switch
3Audio MUTE indicator LED (red)
4Volume control
5Infra Red Receiver for
remote control
6Input select button - up
7Input indicator LEDs (blue)
8Input select button - down
Back panel layout
9Line level INPUT sockets, 1 to 4
10TAPE RECord output sockets
11PRE-amplifier OUTput sockets
12IEC mains power inlet
13RIGHT SPEAKER OUTPUT
terminals
14LEFT SPEAKER OUTPUT terminals
INPUT 1 INPUT 2 INPUT 3 INPUT 4 TAPE REC PRE OUT
X-80
IMPORTANT
50/60Hz
RIGHT SPEAKER OUTPUT
LEFT SPEAKER OUTPUT
DESIGNED IN ENGLAND BY MUSICAL FIDELITY
BUILT IN TAIWAN
POWER
CONSUMPTION
190 W
CAUTION
MOUNT UNIT
ON SOLID SURFACE.
DO NOT REMOVE
SCREWS OR COVERS
UNDER ANY
CIRCUMSTANCES.
NO USER SERVICEABLE
COMPONENTS INSIDE.
REFER SERVICING TO
QUALIFIED ENGINEER.
SEE OWNERS MANUAL
FOR FURTHER INFORMATION.
STEREO INTEGRATED AMPLIFIER
SERIAL
NUMBER
1234 5 6 7 8
9Input selection buttons,
1to 4
(Note -
input number 1 does
nothave PHONO
function on model
X-80)
VOLUME (UP)
VOLUME (DOWN)
1314
10 1112
Audio MUTEbutton