Musical Fidelity M6x250.4/2 User manual

Instruction Manual
Manual in different languages available from www.musicalfidelity.com
5 CHANNEL
7 CHANNEL
11 CHANNEL
4 CHANNEL

2
Contents
Safety Information ................................................................................. 3
Installation.............................................................................................. 4
Facilities & Connections M6x 250.5 / 250.7 / 250.11 ..................... 5
Facilities & Connections M6x 250.4/2 ................................................ 6
Troubleshooting….. ................................................................................ 7
Technical Specifications M6x 250.5.................................................... 7
Technical Specifications M6x 250.7.................................................... 8
Technical Specifications M6x 250.11.................................................. 8
Technical Specifications M6x 250.4/2................................................ 9
Item Disposal Information for Europe ................................................10

3
Note: Unauthorized opening of the
equipment will invalidate any warranty claim.
Safety Information
This unit is designed and built to provide
trouble-free performance . 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 unit 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 .
•Positio n 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 device, 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 the
dealer, who should then check the unit
before further use. Entry of liquid into the
device 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 user
adjustments or fuses to change without
qualification. Refer all service work to an
authorized Musical Fidelity agent .
The electronics in modern hi-fi equipment are
complex and may, therefore, be adversely
affected or damaged by lightning . For
protection of the system during electrical
storms, remove the mains plugs . If after-sales
service is required, to help the dealer identify
the product please quote the serial number
located on the rear panel of the unit .
WARNING - This appliance MUST be earthed .
Precautions & User Information
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

4
Installation
Introduction
This unit has been designed for maximum
performance. It easily powers your speakers at high
levels and allows you to fully enjoy audio and video
sources with great dynamics.
Note: In normal operation, the unit dissipates a
small quantity of power at all times, and it is
important that it is adequately ventilated. The device
must be protected from humidity –if the unit is
moved from a cold place to a warm room, leave the
unit for an hour or so to allow sufficient time for the
moisture to evaporate.
Cleaning
Before cleaning the unit, switch off power at the
mains switch and remove the mains plug from the wall
socket . Clean the cabinet and remote-control unit
using a moist cloth . Using solvents, white spirit or
thinners is not advised, as they could damage the
surface finish.
Installation
Position the unit on a stable, horizontal surface
where there is no risk of it being knocked or
subjected to vibration such as from loudspeakers .
Power Connections
The unit is supplied with a standard IEC mains cable
which plugs into the IEC socket at the back of the unit .
Standard XLR Balanced input/output lead
connections:
(for reference only, no XLR signal leadssupplied)
Audio Output Connections
RCA output: If you want to use two modules to
bi-amplify speakers, or would like to bi-amplify
using another power amp, you can use this output
to feed another amp module or amplifier with the
same signal.
Speaker outputs: The speaker output terminals
for each channel are located below the XLR
inputs . The top terminal of each channel is the positive
(red) output and connects to the positive input of your
speaker. The bottom terminal of each channel is the
negative (black) output and connects to the negative
input of your speaker. The terminals accept naked wire,
spade connectors or banana plugs.
Input connections
UNBALANCED RCA input: One unbalanced RCA
input is available for each amplifier channel.
Connect this to the corresponding RCA output of
your preamplifier.
BALANCED XLR input: One balanced XLR input is
available for each amplifier channel. Connect this
to the corresponding XLR output of your
preamplifier. If you have XLR outputs on your
preamplifier, use these whenever possible.
Balanced connections offer many advantages
compared to unbalanced connections.
Interconnects
Note: Musical Fidelity currently do not make any
interconnecting cables other than those supplied
with the unit. If necessary, please refer to the
dealer who can advise on quality cables for any
particular setup..
Pin functions:
1Ground, 0V
2Normal polarity (“hot” or “+”)
3Inverted polarity (“cold” or “-”)

5
Facilities & Connections M6x 250.5 / 250.7 / 250.11
(Shown on M6x 250.7)
1 2
1Power/Standby button and LED’s
Turns the unit on or off. You can also use the trigger input to automatically turn on your
device. It will turn on when an external source provides 5-30V on the trigger input.
2Status LEDs for each channel
Blue LEDs: device is turned on and ready
Red LEDs: fault condition: Overheated, short circuit, DC on outputs
Dimmed red LEDs: standby mode is active
1RCA Analogue input
2RCA Analogue output (through)
3XLR Balanced input
4Speaker output
5Trigger ON/OFF
6Trigger IN/OUT
7Power ON/OFF switch
8Mains IEC socket
1
2
3
4
5
6
7
8

6
Facilities & Connections M6x 250.4/2
1Power/Standby button and LED’s
Turns the unit on or off. You can also use the trigger input to automatically turn on your
device. It will turn on when an external source provides 5-30V on the trigger input.
2Status LEDs for each channel
Blue LEDs: device is turned on and ready
Red LEDs: fault condition: Overheated, short circuit, DC on outputs
Dimmed red LEDs: standby mode is active
1Speaker output
2XLR Balanced Input
3Stereo/Bridge Mode Switch
4RCA Analogue input
5RCA Analogue output (through)
6Trigger ON/OFF
7Power ON/OFF switch
8Trigger IN/OUT
9Mains IEC sockets
1
2
3
4
6
7
8
9
5
1
2

7
Troubleshooting
Problem
Probable Cause
Remedy
No power
Power plug is not inserted into
socket correctly .
Plug in securely into unit’s IEC socket .
Excessive hum from
system speakers.
Audio connector plug not fully
pushed in. Cable Fault.
Unsuitable Cable (e.g. cable
grounds not connected).
Insert plug securely. Check cable is connected at both ends. Some
“esoteric” cables have internal wiring intentionally disconnected/modified.
For best results on all inputs, please use good quality screened coax; signal
and screen directly connected both ends.
Amplifier will not
turn on
Power switch not in ON position
Power mode switch in wrong
position
Check the power switch on the back & put it in ON position
Check the power mode switch.
Technical Specifications M6x 250.5
Output
Output power
Output power peak
THD+N
Frequency Response
SNR
5x 250W/4 ohms
5x 400W/4 ohms
0,003% at 100W power output
20Hz - 20kHz for 0,5dB
105dB at 1kHz at 200W power output
Connections
Line level inputs
Line level outputs
5 line level RCA
5 line level XLR (balanced)
5 line level RCA through outputs
Power requirement
Mains voltages
Consumption
230V/115V Internally set or 100V optional. AC 50/60Hz
1500W, 0,5W standby
Weight
Unit only, unboxed
In shipping carton & inc. accessories
30,5 kg
ca. 33,5 kg
Unit dimensions
Wide
High, including feet
Deep (front to back) including terminals
435 mm
195 mm
435 mm

8
Technical Specifications M6x 250.7
Output
Output power
Output power peak
THD+N
Frequency Response
SNR
7x 250W/4 ohms
7x 400W/4 ohms
0,003% at 100W power output
20Hz - 20kHz for 0,5dB
105dB at 1kHz at 200W power output
Connections
Line level inputs
Line level outputs
7 line level RCA
7 line level XLR (balanced)
7 line level RCA through outputs
Power requirement
Mains voltages
Consumption
230V/115V Internally set or 100V optional. AC 50/60Hz
2500W, 0,5W standby
Weight
Unit only, unboxed
In shipping carton & inc. accessories
33,5 kg
ca. 36,5 kg
Unit dimensions
Wide
High, including feet
Deep (front to back) including terminals
435 mm
195 mm
435 mm
Technical Specifications M6x 250.11
Output
Output power
Output power peak
THD+N
Frequency Response
SNR
3x 250W/4 ohms + 8x 150W/4 ohms
3x 400W/4 ohms + 8x 250W/4 ohms
0,003% at 100W power output
20Hz - 20kHz for 0,5dB
103dB at 1kHz at 200W power output
Connections
Line level inputs
Line level outputs
11 line level RCA
11 line level XLR (balanced)
11 line level RCA through outputs
Power requirement
Mains voltages
Consumption
230V/115V Internally set or 100V optional. AC 50/60Hz
2750W, 0,5W standby
Weight
Unit only, unboxed
In shipping carton & inc. accessories
35,5 kg
ca. 38,5 kg
Unit dimensions
Wide
High, including feet
Deep (front to back) including terminals
435 mm
205 mm
435 mm

9
Technical Specifications M6x 250.4/2
Output
Output power
THD+N
Frequency Response
SNR
2x 250W/8 ohms
4x 130W/4 ohms
0,003% at 100W power output
20Hz - 20kHz for 0,5dB
105dB at 1kHz at 200W power output
Connections
Line level inputs
Line level outputs
4 line level RCA
4 line level XLR (balanced)
4 line level RCA through outputs
Power requirement
Mains voltages
Consumption
230V/115V Internally set or 100V optional. AC 50/60Hz
2500W, 0,5W standby
Weight
Unit only, unboxed
In shipping carton & inc. accessories
21,5 kg
ca. 24 kg
Unit dimensions
Wide
High, including feet
Deep (front to back) including terminals
435 mm
110 mm
435 mm
Musical Fidelity reserves the right to make improvements which may result in specification or feature changes without notice.

10
Item Disposal Information for Europe
DISPOSAL
The crossed out wheeled bin label that appears on the
back panel of the product indicates that the product must
notbedisposedofasnormalhouseholdwaste.Topreventpossible
harm to the environment please separate the product from other
waste to ensurethat it can be recycled in an environmentallysafe
manner. Please contact your local government office or your
retailer for available collectionfacilities.
DISPOSITION
La poubelle sur roulettes barrées X, qui apparaît en logo
surlepanneauarrièreduproduit,indiqueque celui-cinedoit
pas être traité comme un déchet domestique commun. Afin de
protéger l’environnement, ce produit électronique devra être géré
séparémentetdonc recycléselonlesnouvellesnormesEuropéennes
Rohs concernant les déchets d’appareils électroniques. Prière de
contacter les services concernés gouvernementauxou votre point de
vente pour l’élimination et l’enlèvement de déchets électroniques
équipés de composantsélectroniques.
DISPOSAL
La etiqueta cruzada hacia fuera del compartimientoque
aparece en el panel trasero del producto indica que el
productonosedebereciclarsecomobasuranormalde la casa.Para
prevenir daños posible al ambiente separe por favor el producto de
otras basura para asegurarse de que puede ser reciclada de una
manera ambientalmente segura. Entre en contacto por favor a su
oficina gubernamental local o a su minorista para las instalaciones
disponibles de lacolección.
RIFIUTI
L’etichetta del cassonetto barrato riportato sul retro
dell’apparecchio indica che il prodotto non deve essere
smaltito tramite la procedura normale di smaltimento dei rifiuti
domestici. Per evitare eventuali danni all’ambiente, separare
questo prodotto da altri rifiuti domestici in modo che possa venire
riciclato in base alle procedure di rispetto ambientale. Per
maggiori dettagli sulle aree di raccolta disponibili, contattate
l’ufficio govenativo locale od il rivenditore del prodotto.
FACHGERECHTE ENTSORGUNG:
Das auf der Geräterückseite angebrachte Label deutet
darauf hin, dass das Produkt nicht mit konventionellem
Hauskehricht entsorgt werden darf. Um Schäden und
Verschmutzungen an Umwelt und Mensch zu vermeiden, muss
dasProduktfachgerechtentsorgtundvonanderemAbfallgetrennt
werden.WendenSiesich bei Fragen hierzu anIhren Fachhändler
oder an eine öffentlicheInformationsstelle.
AFVAL
Het label op de achterzijde van dit apparaat, een
afvalbak op wielenmet een kruis doorgehaald, geeft aan
dat dit apparaat niet samen met gewoon huishoudafval mag
worden weggegooid. Om mogelijke schade aan onze
leefomgeving te voorkomen dient dit apparaat, gescheiden van
gewoon huishoudelijk afval, te worden afgevoerd zodat het op
een milieuvriendelijkemanierkan worden gerecycled. Neem voor
beschikbare inzamelplaatsen contact op met uw gemeentelijke
reinigingsdienst of met uw elektronica leverancier.
HÄVITTÄMINEN
Yliruksattua jäteastiaa kuvaava tarra tuotteen
takalevyssä kertoo, että tuotetta ei saa käsitellä
normaalina talousjätteenä. Ympäristön suojelemiseksi on tuote
pidettävä erillään muusta jätteestä ja se on kierrätettävä
ekologisesti kestävällä tavalla. Ota yhteyttä laitteen myyjään tai
PirkanmaanYmpäristökeskukseenlähimmän kierrätyskeskuksen
löytämiseksi.
AFSKAFNING
Logoet med en skraldespand med kryds over på
bagsiden af apparatet indikerer at dette produkt ikke må
kasseres som normal husholdningsaffald. For at forebygge mulig
skade på miljøet, bedes De separere dette produkt fra andet
affald, og sikre at det bliver genbrugt på en miljørigtig måde.
Kontakt venligst de lokale myndigheder eller din forhandler for
oplysning om nærmeste tilgængelige opsamlingssted for
elektronikaffald.
ΔΙΑΔΙΚΑΣΙΑ ΑΠΟΡΡΙΨΗΣ
ΤΟ ΣΗΜΑ ΜΕ ΤΟΝ ΔΙΑΓΕΓΡΑΜΜΕΝΟ ΤΡΟΧΗΛΑΤΟ
ΚΑΔΟ ΑΠΟΡΡΙΜΑΤΩΝ ΣΤΗΝ ΠΙΣΩ ΟΨΗ ΤΟΥ
ΜΗΧΑΝΗΜΑΤΟΣΔΗΛΩΝΕΙ ΟΤΙΤΟ ΠΡΟΙΟΝΑΥΤΟΔΕΝ ΠΡΕΠΕΙ
ΝΑ ΔΙΑΧΕΙΡΙΣΘΕΙ ΣΑΝ ΣΥΝΗΘΙΣΜΕΝΟ ΟΙΚΙΑΚΟ ΑΠΟΒΛΗΤΟ.
ΠΡΟΣ ΑΠΟΦΥΓΗ ΕΝΔΕΧΟΜΕΝΗΣ ΕΠΙΒΑΡΥΝΣΗΣ ΤΟΥ
ΠΕΡΙΒΑΛΛΟΝΤΟΣ, ΞΕΧΩΡΙΣΤΕ ΤΟ ΠΡΟΙΟΝ ΑΠΟ ΤΑ ΑΛΛΑ
ΑΠΟΡΡΙΜΑΤΑ ΩΣΤΕ ΝΑ ΕΞΑΣΦΑΛΙΣΘΕΙ ΗΑΝΑΚΥΚΛΩΣΗ ΤΟΥ
ΜΕ ΤΟΝ ΠΡΕΠΟΝΤΑ ΤΡΟΠΟ.
ΠΑΡΑΚΑΛΟΥΜΕ ΝΑ ΕΠΙΚΟΙΝΩΝΗΣΕΤΕ ΜΕ
ΤΗΝ ΤΟΠΙΚΗ ΥΠΗΡΕΣΙΑΑΝΑΚΥΚΛΩΣΗΣ ΗΜΕ
ΤΟ ΚΑΤΑΣΤΗΜΑΑΓΟΡΑΣ ΓΙΑ ΠΕΡΙΣΣΟΤΕΡΕΣ
ΛΕΠΤΟΜΕΡΕΙΕΣ.
a Division of Audio Tuning
Vertriebs GmbH
Margaretenstrasse 98
A-1050 Vienna
AUSTRIA
[phone]
http://www.musicalfidelity.com