Musical Fidelity Stereo Amplifier X 80 User Manual

X-80 SPECIFICATIONS  
X-80  
Output : Voltage RMS :  
21 Volts 20Hz to 20kHz, one channel loaded  
59 Volts  
55 Watts one channel into 8 Ohms (17.4dBW)  
85 Watts one channel into 4 Ohms  
Peak :  
Power :  
DUAL MONO INTEGRATED AMPLIFIER  
Peak-to-peak output current :  
28 Amps  
Damping factor :  
77  
Output devices per channel :  
Pre-output impedance :  
2
50 Ohms  
Line inputs :  
Total harmonic distortion + noise :  
Signal / noise ratio :  
Input sensitivity for 55Watts, 8 Ohms :  
Input impedance :  
< 0.02% 20Hz to 20kHz  
> 93dB ‘A-weighted  
175mV  
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.  
INSTRUCTIONS FOR USE  
Power requirement :  
Dimensions :  
100 / 115 / 230Volts AC 50 / 60Hz (factory pre-set),  
190 Watts maximum into 8 Ohms, 15 Watts idle.  
Thank you for purchasing the Musical Fidelity  
X-80 Integrated amplifier.  
218mm, 8.6 inches wide  
98mm, 3.8 inches high (including feet)  
339mm, 13.4 inches deep  
Used properly and carefully, it should give you many years of  
outstanding musical reproduction.  
(including knob and rear terminals)  
Aesthetically, the X-80 Integrated amplifier is a perfect match for the  
X-RAY CD player and X-PLORA FM tuner.  
Weight :  
6.5 kg, 14.3 lbs unit only, unboxed  
8 kg, 17.7 lbs in shipping carton  
Together, they form one of the finest hi-fi systems available.  
Standard accessories :  
IEC type mains lead (10-Amp), remote control,  
2 batteries size LR03 or AAA, manganese alkaline type  
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.  
Musical Fidelity reserves the right to make improvements which may result in specification  
or feature changes without notice.  
X-80 Integrated Amplifier  
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X-80 Integrated Amplifier  
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CONNECTIONS  
GENERAL ADVICE  
INSTALLATION PRECAUTIONS and USER INFORMATION  
OUTPUT CONNECTIONS  
All input, output and power connections  
should be made with the mains power  
switched OFF.  
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:  
Connect your loudspeakers to the pairs of  
terminals on the back panel marked as  
LEFT and RIGHT SPEAKER outputs.  
Note: the combined load impedance  
must not be less than 4 ohms.  
Heed all warnings shown on the back of the product.  
INPUT CONNECTIONS  
Only connect the X-80 Integrated amplifier to a mains outlet having the same voltage as marked  
at the back of the unit.  
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, 3 and 4, corre-  
sponding with the blue function indicator  
LEDs on the front panel.  
Always ensure that when disconnecting and reconnecting your audio equipment the mains  
supply is switched off.  
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.  
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.  
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.  
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.  
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.  
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 OUT RCA sockets  
would therefore be connected to the input  
of the external “woofer” amplifier in this  
example.  
Connect the X-80’s TAPE RECord out-  
put sockets to the line input sockets of  
the your tape deck.  
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 you are in doubt about bi-amplifica-  
tion, please contact your dealer for  
advice.  
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.  
X-80 Integrated Amplifier  
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X-80 Integrated Amplifier  
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CONNECTIONS & FACILITIES  
REMOTE CONTROL  
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.  
1
2
3
4
5
6
7
8
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.  
Front panel layout  
1
2
3
4
5
POWER-on indicator LED (blue)  
POWER on/off switch  
Audio MUTE indicator LED (red)  
Volume control  
Infra Red Receiver for  
remote control  
Input select button - up  
Input indicator LEDs (blue)  
Input select button - down  
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.  
Back panel layout  
9
Line level INPUT sockets, 1 to 4  
10 TAPE RECord output sockets  
11 PRE-amplifier OUTput sockets  
12 IEC mains power inlet  
13 RIGHT SPEAKER OUTPUT  
terminals  
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.  
6
7
8
14 LEFT SPEAKER OUTPUT terminals  
10  
11  
12  
9
Input selection buttons,  
1 to 4  
(Note -  
input number 1 does  
VOLUME (UP)  
50/60Hz  
CAUTION  
MOUNT UNIT  
ON SOLID SURFACE.  
DO NOT REMOVE  
not have PHONO  
function on model  
POWER  
CONSUMPTION  
SCREWS OR COVERS  
UNDER ANY  
CIRCUMSTANCES.  
190  
W
VOLUME (DOWN)  
NO USER SERVICEABLE  
COMPONENTS INSIDE.  
REFER SERVICING TO  
QUALIFIED ENGINEER.  
SEE OWNERS MANUAL  
FOR FURTHER INFORMATION.  
X-80)  
SERIAL  
NUMBER  
INPUT  
1
INPUT 2  
INPUT 3  
INPUT 4  
TAPE REC  
PRE OUT  
X-80  
Audio MUTE button  
STEREO INTEGRATED AMPLIFIER  
DESIGNED IN ENGLAND BY MUSICAL FIDELITY  
BUILT IN TAIWAN  
RIGHT SPEAKER OUTPUT  
LEFT SPEAKER OUTPUT  
13  
14  
X-80 Integrated Amplifier  
Page 4 of 8  
X-80 Integrated Amplifier  
Page 5 of 8  
Issue 4 May 2004  
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