Chord SPM 1050 Mk2 Bedienungsanleitung

Chord Empfänger SPM 1050 Mk2

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SPM 1050 MKII POWER AMPLIFIER
MANUAL
OPERATING INSTRUCTIONS
INSTALLATION
Your amplifier should be positioned to ensure a free flow of air over the rear heat sink and through the upper and
lower grilles. When driven continuously at well above average listening levels, the temperature on the heat sink may
exceed 50oC. This is not a fault, but an indication of the need for adequate ventilation.
Please ensure that the IEC mains lead is correctly terminated.
UK/EUROPE Brown = LIVE = Black USA/CANADA!
Blue = NEUTRAL = White!
Yellow/Green = EARTH = Green
THE SPM 1050 MKII MUST BE EARTHED AT ALL TIMES VIA ITS OWN MAINS LEAD.
FAILURE TO DO THIS MAY BE HAZARDOUS.
CE This unit complies with EN 50081-1 & IEC 801/2
REAR PANEL
The two female XLRs are pre-amplifier inputs. Also, phono
input sockets are available immediately outboard of the IEC
mains plug. Please connect these last, with the amplifier
switched off.
OPERATION
When the amplifier is connected to the mains the LED immediately above the power switch will indicate red
(standby). When switched on, this LED will change to illuminate green (operational). There will be a delay of about
12 seconds before the output signal is fed to the loudspeakers, with the subsequent illumination of the blue Status
LED. This is to allow the amplifier to stabilise.
In the event of a major overload or a short circuit across the output of any channel, the green "power on" LED will
indicate trip by fading and immediately re-illuminating to red standby mode. The amplifier will shut down
automatically and it should then be switched off. When the fault condition has been rectified, the amplifier can be
It has come to light that, in some European
countries a hum may occur if Pre and Power
Amplifiers are connected to mains wall sockets
which do not have an earth. Please ensure
that, if this is the case, the pre and power amps
are connected via a multi-way mains block
which contains an earth point at each socket
outlet. This is to ensure that the chassis
metalwork of each item is connected together
and Chord Electronics Limited firmly
recommends that an earthing method for the
building is implemented.
switched on and will power up as normal. A minimum period of eight seconds must be allowed to elapse between
switching off and switching on again. This is to allow the power supply protection circuitry to re-set itself.
There are no user serviceable parts in your SPM 1050 MKII. It should only be serviced by Chord Electronics Limited
or their expressly approved Service Agents.
CARE AND CLEANING
The SPM 1050 MKII requires no special care other than common-sense. Spray window cleaner (clear type) may be
used (if first sprayed on to a soft cloth) to remove surface blemishes such as finger marks from the metal casing or the
piano black finished wooden side cheeks. Never spray directly on to the amplifier and never use abrasive cleaning
materials, use only a lint free soft cloth as described.
SERVICE INFORMATION
WARNING - The power supply components within this amplifier are designed to be operated at lethal voltages and
energy levels. Circuit designs that embody these components conform with applicable safety requirements.
Precautions must be taken to prevent accidental contact with power-line potentials. Do not connect grounded test
equipment.
NEW TECHNOLOGY
Much of what Chord has achieved is the result of using innovative, leading edge technology. For example, we believe
that we are unique in using the technique of ‘dynamic coupling’ of the power supply rails. Whatever transient
demand is presented to the amplifier stages, the positive and negative rails remain in perfect equilibrium, with each
compensating for the demands made on the other. This means that power delivery is always balanced and free from
ground loop modulation distortion.
This, combined with enormous reserves of instantly delivered, precisely controlled power is what makes the
SPM 1050 MKII sound so effortless. The power supply rails operate nominally at 80 volts, well above that which ±
most amplifiers can accommodate. This and other advanced techniques enables the ultra high frequency low ESR
power supply to store a great deal more energy far more efficiently. Clipping is virtually impossible. Furthermore,
compared to other amplifiers of a similar power rating the SPM 1050 MKII weighs in at a mere 15Kg. Another new
technique is used to protect the amplifier against overload, internal and external short circuits. The output signal path
is totally free of any fuses or sound-degrading resistive components often employed for overload sensing. The
SPM 1050 MKII is designed to surpass the highest European safety and electromagnetic interference standards.
The amplifier sections are also highly sophisticated designs that make the most of the best high voltage, lateral
structure MOSFETs available, 4 x 300 watt devices per channel. Combining the subtlety and musicality of a good
valve design with the punch and accuracy of ‘state of the art’ solid state products. The result is a ‘sliding bias’ class
A/B design with all drive circuitry operating in class A. At usual listening levels, most of the music will be
reproduced in class A. Chord’s no-compromise design philosophy means there is no better built amplifier.
Individually hand-crafted, it is constructed to aerospace standards from the circuit boards up.
OPERATION
When the amplifier is connected to the mains the central clear ball will illuminate red (standby). Press the ball in to
switch on the amplifier. The ball will illuminate green (operational). There will be a delay of about 12 seconds before
the output signal is fed to the loudspeakers the ball will then change to blue to indicate the output relays are engaged.
In the event of a major overload or a short circuit across the output of any channel, the blue "power on" illumination
will indicate trip by fading and immediately re-illuminating to red standby mode. The amplifier will shut down
automatically and it should then be switched off at the mains outlet. When the fault condition has been rectified, the
amplifier can be switched on and will power up as normal. A minimum period of 1 minute must be allowed to elapse
between switching off and switching on again. This is to allow the power supply protection circuitry to re-set itself.

Produktspezifikationen

Marke: Chord
Kategorie: Empfänger
Modell: SPM 1050 Mk2

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