Owners Manual

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Instructions for use

Thank you for purchasing the Musical Fidelity M8s 700m fully balanced “monobloc” power amplifier.

The M8s 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 i

mmeasurably 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.

Summary of content (13 pages)

PAGE 1
Instructions for use Thank you for purchasing the Musical Fidelity M8s 700m fully balanced “monobloc” power amplifier. The M8s 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.
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CONTENTS Section Safety Information Page – Mains plug (UK only) – Modification warning General advice – Installation precautions 4 Disposal information – EU disposal information 5 Installation – Introduction, cleaning, installation, power connections, audio connections 6 Facilities and connections – Illustrations, main unit front & rear panels 7 Operation – Single ended (RCA) input 8 – Balanced (XLR) input 9 – Speaker Bi-wiring – Starting – Basic fault finding Problems? 3
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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...............................
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GENERAL ADVICE Installation, Precautions & User Information This new M8s 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.
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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.
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INSTALLATION Introduction Congratulations on the purchase of the new M8s 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.
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FACILITIES & CONNECTIONS 1 2 1 POWER LED 2 ON/OFF Button 3 STANDBY LED 3 4 7 8 5 9 6 10 11 12 BALANCED/RCA Selector 4 TRIGGER input jack socket 9 5 LOUDSPEAKER OUTPUTS 4mm banana 10 RCA input socket 6 TRIGGER output jack socket 11 RCA loop output socket 7 BALANCED XLR (female) input 12 IEC MAINS INPUT 8 BALANCED XLR (male) loop output XLR Balanced input and output lead connections: (for reference, no XLR signal leads supplied) Issue 1 Pin functions: 1 Ground (cable shield
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OPERATION 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 Speaker LEFT RCA output RIGHT RCA output BALANCED/RCA switch set to RCA RIGHT Speaker + - + - RCA leads connection diagram. (Trigger and mains leads omitted for clarity). Note: The two RED speaker terminals are internally connected together. Similarly, the two BLACK speaker terminals are also internally connected together.
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BALANCED (XLR) INPUT To use the XLR INPUT, connect XLR source outputs to the INPUT XLR sockets (see page 7). Make sure the BALANCED/RCA switch is set for BALANCED. Pre-amplifier LEFT Speaker LEFT XLR output RIGHT XLR output BALANCED/RCA switch set to BALANCED + - RIGHT Speaker + - XLR signal leads connection diagram. (Trigger and mains leads omitted for clarity). Note: The two RED speaker terminals are internally connected together.
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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.
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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. Mains power plug is not fully inserted into rear socket. Plug in securely. No sound Mute function is still active.
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SPECIFICATIONS Output Power Voltage Current peak-to-peak Damping factor Output devices 700 Watts per channel into 8 Ohms (28 dBW) 78 Volts RMS, 20Hz to 20 kHz; onset of clipping (220 Volts peak-to-peak) 350 Amps 210 10 pairs Line input THD+N Signal / noise ratio Input impedance Frequency response <0.
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MANUAL HISTORY RELEASE DATE CHANGES Issue 1 21st August 2018 1st release.