Instructions for use
Thank you for purchasing the Musical Fidelity M8 700m fully balanced “monobloc” power amplifier.
The M8 700m is designed to be partnered with present and future M8 series products. It is, in fact, based on the
Titan design. It features twin high-current power amplifier sections connected in bridged mono configuration for
the absolute best in dynamics and drive capabilities. Two paralleled and generously over specified power
supplies also ensure unsurpassed supply noise filtering, transient handling and massive power reserve possible
in a single box power amplifier Phase splitting between the two internal amplifiers is achieved using a high
performance fully balanced converter circuit with wide flat frequency response uniform in-band characteristics
and immeasurably low distortion and noise.
Fully balanced as well as single ended inputs are catered for with loop outputs for both types, for bi-amping etc.
Trigger input/output allows the unit to be controlled/controller for switch on/off function.
This combination yields one of the best high-fidelity power amplifiers available at any price.
Used properly and carefully, it should give many years of outstanding musical reproduction.
Dust regularly with a soft duster or soft brush, but be careful when using cleaning or polishing agents - they may
harm the surface finish.
If there are any questions about the product or related, please consult the dealer who is there to help and
advice.
CONTENTS
Section Page
Safety Information
General advice
Disposal information
Installation
Facilities and connections
Operation
Problems?
Specifications
Manual history
– Mains plug (UK only)
– Modification warning
– Installation precautions 4
– EU disposal information 5
– Introduction, cleaning, installation, power connections, audio
connections
– Illustrations, main unit front & rear panels 7
– Single ended (RCA) input
– Balanced (XLR) input
– Speaker Bi-wiring
– Starting
– Basic fault finding 11
12
13
10
3
6
8
9
Issue 2 Page 2 of 13
SAFETY INFORMATION
IMPORTANT! (U.K. only)
This unit is supplied in the U.K. with mains lead fitted with a moulded 13 amp plug. If, for any reason, it is
necessary to remove the 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 the 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 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 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.
Issue 2 Page 3 of 13
GENERAL ADVICE
Installation, Precautions & User Information
This new M8 700m is designed and built to provide trouble-free performance, but as with all electronic devices it
is necessary to observe a few precautions:
This unit features a BRIDGED speaker output and should NOT be grounded on either speaker output
terminal as both red and black speaker terminals are effectively “hot”, i.e. carry signal. Please check if using
any active “sub”, electrostatic, or other non standard potentially grounded speaker types directly connected
to the speaker outputs of the M8 700m. Consult speaker manual or supplier if in doubt.
Heed all warnings shown on the back of the product.
Only connect the M8 700m to a mains outlet having the same voltage as marked at the back of the unit.
Always ensure that when disconnecting and reconnecting 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 M8 700m, 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 M8 700m 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 end-user changeable internal
adjustments or components. Refer all service work to an authorised Musical Fidelity agent.
* Note: Unauthorised opening of the equipment will invalidate any warranty claim.
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 the audio system during electrical storms, remove the mains plugs.
If after-sales service is required, to help the dealer identify the M8 700m please quote the serial number located
on the rear panel of the unit.
Issue 2 Page 4 of 13
ITEM DISPOSAL INFORMATION
DISPOSAL
The crossed out wheeled bin label that appears on the back panel of the product indicates that the product must not be
disposed of as normal household waste. To prevent possible harm to the environment please separate the product from
other waste to ensure that it can be recycled in an environmentally safe manner. Please contact local government office or
retailer for available collection facilities.
DISPOSITION
La poubelle sur roulettes barrées X, qui apparaît en logo sur le panneau arrière du produit, indique que celui-ci ne
doit pas être traité comme un déchet domestique commun. Afin de protéger l'environnement, ce produit électronique devra
être géré séparément et donc recyclé selon les nouvelles normes Européennes Rohs concernant les déchets d'appareils
électroniques. Prière de contacter les services concernés gouvernementaux ou votre point de vente pour l'élimination et
l'enlèvement de déchets électroniques équipés de composants électroniques.
DISPOSAL
La etiqueta cruzada hacia fuera del compartimiento que aparece en el panel trasero del producto indica que el
producto no se debe reciclarse como basura normal de 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 la colección.
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 das
Produkt fachgerecht entsorgt und von anderem Abfall getrennt werden. Wenden Sie sich bei Fragen hierzu an Ihren
Fachhändler oder an eine öffentliche Informationsstelle.
AFVAL
Het label op de achterzijde van dit apparaat, een afvalbak op wielen met 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
milieuvriendelijke manier kan 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 Pirkanmaan Ympäristökeskukseen lähimmän 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
ΜΗΧΑΝΗΜΑΤΟΣ
ΔΗΛΩΝΕΙ ΟΤΙ ΤΟ ΠΡΟΙΟΝ ΑΥΤΟ ΔΕΝ ΠΡΕΠΕΙ ΝΑ ΔΙΑΧΕΙΡΙΣΘΕΙ ΣΑΝ ΣΥΝΗΘΙΣΜΕΝΟ ΟΙΚΙΑΚΟ ΑΠΟΒΛΗΤΟ.
ΠΡΟΣ ΑΠΟΦΥΓΗ ΕΝΔΕΧΟΜΕΝΗΣ ΕΠΙΒΑΡΥΝΣΗΣ ΤΟΥ ΠΕΡΙΒΑΛΛΟΝΤΟΣ, ΞΕΧΩΡΙΣΤΕ ΤΟ ΠΡΟΙΟΝ ΑΠΟ ΤΑ ΑΛΛΑ
ΑΠΟΡΡΙΜΑΤΑ ΩΣΤΕ ΝΑ ΕΞΑΣΦΑΛΙΣΘΕΙ Η ΑΝΑΚΥΚΛΩΣΗ ΤΟΥ ΜΕ ΤΟΝ ΠΡΕΠΟΝΤΑ ΤΡΟΠΟ.
ΠΑΡΑΚΑΛΟΥΜΕ ΝΑ ΕΠΙΚΟΙΝΩΝΗΣΕΤ
ΓΙΑ ΠΕΡΙΣΣΟΤΕΡΕΣ ΛΕΠΤΟΜΕΡΕΙΕΣ.
Ε ΜΕ ΤΗΝ ΤΟΠΙΚΗ ΥΠΗΡΕΣΙΑ ΑΝΑΚΥΚΛΩΣΗΣ Η ΜΕ ΤΟ ΚΑΤΑΣΤΗΜΑ ΑΓΟΡΑΣ
Issue 2 Page 5 of 13
INSTALLATION
Introduction
Congratulations on the purchase of the new M8 700m power amplifier. Great attention has been paid to internal
layout, isolating each circuit section to prevent possible interaction.
The unit features two monoblock high current amplifiers with paralleled supplies for the absolute best in
transients and dynamics. Generously rated, they are enough to drive even the most demanding loudspeakers
with ease. Low distortion and very quiet they will deliver all music types exactly as the artist originally intended.
The resultant performance achieved by this unit is among the best in the world. It has excellent signal to noise
ratio, low distortion, wide bandwidth and dynamic range, with extraordinary resolution and fine detail.
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 M8 700m on a stable, horizontal surface where there is no risk of it being knocked, or subjected to
vibration such as from loudspeakers.
Important note:
In normal operation, the unit dissipates a significant quantity of power at all times, and it is
important that it is adequately ventilated. The top and bottom are ventilated to allow the smooth
flow of heat through the unit. It is therefore not recommended that the unit is enclosed in a
cabinet or placed where the ventilation holes are impeded as this could result in excessive heat
build-up.
The M8 700m 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.
Power Connections
The M8 700m is supplied with a standard IEC mains cable which plugs into the IEC socket at the back of the
unit (see page 7)
Audio Connections
XLR Inputs: Connect any XLR balanced source to balanced analogue input (see page 7 for more information).
Use good quality fully connected (signals and ground) balanced XLR cables for all XLR signal connections.
The balanced input and outputs sockets are fully balanced, i.e. there is signal on both hot and cold signal
terminals. Please ensure for maximum benefit, that any balanced leads used with this product are fully
connected both ends and that the cold lead is separate from ground connection. Consult lead manufacturer if
there is any doubt.
RCA Inputs: Connect RCA single-ended source to relevant analogue input (see page 7 for more information).
Use good quality fully connected (signal and ground) coaxial phono cables for all RCA signal connections.
SPEAKER OUTPUTS: Connect loudspeaker(s) to the terminals on the back panel marked as SPEAKER
OUTPUTS.
LOOP OUT: loop outputs (XLR and RCA) allow the input signals to be passed on to a second amplifier, or other
component. This is useful for example, for bi-amping.
Cables note: Musical Fidelity currently do not make any interconnecting cables, nor do we endorse any
particular third-party manufacturer’s cables. If advice is required, please refer to the Musical Fidelity dealer who
can demonstrate suitable quality cable(s) for any particular setup.
Trigger connections
Trigger input: Connect trigger output of controlling device to input socket. Use good quality 3.5mm jack cables
(fully connected signal and ground) Unit accepts ±4 to ±15V DC trigger inputs. The M1 PWR can then be
switched on or off by remote device(s) connected to its trigger input.
Trigger output: Connect trigger input of controlling device to output socket. Use good quality 3.5mm jack
cables (fully connected signal and ground). The M1 PWR then becomes the main controlling device and its
power button will automatically switch on/off all devices thus connected to the trigger output.
Issue 2 Page 6 of 13
FACILITIES & CONNECTIONS
1 2 3
1 POWER LED
2 ON/OFF Button
3 STANDBY LED
4 5 6
7 8 9 10 11 12
4 TRIGGER input jack socket
5 LOUDSPEAKER OUTPUTS 4mm banana
9 BALANCED/RCA Selector
10 RCA input socket
6 TRIGGER output jack socket
7 BALANCED XLR (female) input
11 RCA loop output socket
12 IEC MAINS INPUT
8 BALANCED XLR (male) loop output
XLR Balanced input and output lead
connections:
Pin functions:
1 Ground (cable shield)
2 Signal + (normal polarity or "hot")
(for reference, no XLR signal leads supplied)
3 Signal – (inverted polarity or "cold")
Issue 2 Page 7 of 13
OPERATION
p
SINGLE-ENDED (RCA) INPUT
To use the RCA INPUT, connect RCA source outputs to the INPUT RCA sockets. Make sure the
BALANCED/RCA switch is set for RCA.
Pre-amplifier
LEFT RCA output
RIGHT RCA out
ut
LEFT
Speaker
+
-
BALANCED/RCA switch set to RCA
RCA leads connection diagram.
(Trigger and mains leads omitted for clarity).
RIGHT
Speaker
+
-
Note: The two RED speaker terminals are internally connected together. Similarly, the two BLACK speaker
terminals are also internally connected together.
The diagram above shows the speakers connected to the LEFT hand output posts. It is also perfectly
acceptable to use the RIGHT hand output posts as they are exactly the same connection internally.
IMPORTANT: BALANCED/RCA switch
The BALANCED/RCA switch (see page 7) is included to minimise noise when using the unit in RCA mode. In
most cases it will operate in BALANCED position on RCA inputs with no appreciable audible increase in noise.
There is no harm in operating the unit in this way.
However it is important, that if using the XLR (BALANCED) input, the switch must be set for BALANCED. If the
switch is not set for BALANCED on an XLR input, a 6dB reduction in loudness will occur and the benefits of
BALANCED operation will be lost.
Issue 2 Page 8 of 13
p
BALANCED (XLR) INPUT
To use the RCA INPUT, connect RCA source outputs to the INPUT RCA sockets (see page 7). Make sure the
BALANCED/RCA switch is set for BALANCED.
Pre-amplifier
LEFT XLR output
RIGHT XLR out
ut
LEFT
Speaker
+
-
BALANCED/RCA switch set to BALANCED
XLR signal leads connection diagram.
(Trigger and mains leads omitted for clarity).
RIGHT
Speaker
+
-
Note: The two RED speaker terminals are internally connected together. Similarly, the two BLACK speaker
terminals are also internally connected together.
The diagram above shows the speakers connected to the left-hand output posts. It is also perfectly acceptable
to use the right-hand output posts as they are exactly the same connection internally.
Issue 2 Page 9 of 13
Speaker bi-wiring
It is intention of the above feature to “bi-wire” the outputs with suitable speakers.
Such speakers must have at least four terminals; two for the treble, high frequency (or HF) driver and two more
for the bass, low frequency (or LF) driver.
Any “shorting links” between treble and bass input terminals (on the speakers) must be removed for maximum
benefit. These links normally are visible under the speaker’s terminals as gold plates/bars connecting the
terminals up in pairs.
Please consult speaker manuals/user support for more details.
LEFT
Speaker
+HF
-HF
+LF
-LF
Bi-wiring speaker leads connection diagram.
(Preamp, trigger and mains leads omitted for clarity).
RIGHT
Speaker
+HF
-HF
+LF
-LF
Starting
Once all connections are made, switch on the unit, using the POWER button front of the unit. The MUTE LED
will light. Speaker outputs are muted for about 6 seconds, so no sound will be heard from the speakers. Once
the 6 seconds is up the MUTE LED goes out, indicating unit is settled, and ready for use.
Issue 2 Page 10 of 13
PROBLEMS?
Basic problem-solving with an amplifier is similar to troubleshooting other electrical or electronic equipment.
Always check the most obvious possible causes first, such as the following examples:
Problem Probable Cause Remedy
No power when
POWER button is
pressed.
No sound Mute function is still active.
Sound cut Loose connection
Sound is not precise,
lacking in bass and
stereo image.
Hum. Audio connector plug not fully
Mains power plug is not fully inserted
into rear socket.
Wrong connections between input
sources and the unit
Speakers not connected, or
incorrectly wired
Output overload or short circuit
Speakers are connected out of
phase, i.e., connections to one
speaker (+ and –) are reversed.
pushed in
Cable Fault
Unsuitable cable
(e.g. cable grounds not connected)
Plug in securely.
Wait for the MUTE LED to go out.
Check audio input lead connections.
Check speaker cables.
Check speaker and input connections.
Switch unit off. Check speaker connections
for shorting strands or wires. When all has
been double-checked reduce volume and
switch unit back on.
N.B. Take great care when bi-wiring or biamping that speaker bass and treble linking
straps are removed; see speaker manual for
more information.
Ensure speakers are connected with same
polarity at amplifier and speaker ends.
Insert plug securely.
Check cable is connected at both ends.
N.B. Some esoteric cables have internal
wiring intentionally disconnected/modified.
For best results on all inputs analogue AND
digital, please use good quality screened
coax; signal and screens both separately
connected at both ends.
No audio output, or
too low level output.
If none of these actions affect a cure, please contact the dealer, or an authorised Musical Fidelity service agent.
Remember; never open the case of the M8 700m, as this will invalidate the guarantee.
Issue 2 Page 11 of 13
Incorrect or missing connections Check connections and make sure they are
secure.
SPECIFICATIONS
Output
Power 700 Watts per channel into 8 Ohms (28 dBW)
Voltage 78 Volts RMS, 20Hz to 20 kHz; onset of clipping
(220 Volts peak-to-peak)
Current peak-to-peak 350 Amps
Damping factor 210
Output devices 10 pairs
Line input
THD+N <0.005% typical, 20 Hz to 20 kHz
Signal / noise ratio >120 dB ‘A’-weighted
Input impedance 50k Ohms
Frequency response +0, –1dB, 10Hz to 80 kHz
Connections
Line level inputs 1 line level XLR (balanced) connector
1 line level RCA connector
Line level outputs 1 line level XLR (balanced) connector
1 line level RCA connector
Speaker outputs 2 pairs 4mm banana plug/binding posts
Trigger input 3.5mm (⅛”) mono jack ±4.5 to ±15V DC
Trigger output 3.5mm (⅛”) mono jack +12V DC
Power requirement
Mains voltages 115/230VAC 50/60Hz (factory pre-set)
100VAC 50/60Hz (alternative)
Consumption 0.25 Watts standby (Orange LED lit)
140 Watts on, idle (Blue LED lit, no signal output)
1500 Watts maximum (Blue LED lit, full power output)
Weight
Unit only, unboxed 30 kg (66 lbs)
In shipping carton 35.5 kg (78⅛ lbs)
Dimensions
Width 440 mm (17⅓”)
Height (including feet) 160 mm (6⅓”)
Depth (front to back) including terminals 460 mm (18⅛”)
Standard accessories
IEC type mains lead (10-Amp type)
Musical Fidelity reserves the right to make improvements which may result in
specification or feature changes without notice. E&OE.
Issue 2 Page 12 of 13
MANUAL HISTORY
RELEASE DATE CHANGES
Issue 1 4
Issue 2 11th January 2012 Maximum power updated
th
January 2012 1st issue
Issue 2 Page 13 of 13
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