Cyrus Power User Manual

UserInstructions

CyrusPower

Cyrus Power Amplifier

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INTRODUCTION Cyrus Power Amplifier

Congratulations on the purchase of your
Cyrus Power. This piece of equipment is a precision
manufactured state-of-art product, constructed to the
highest standards and specifications. This manual contains
installation and operating instructions to enable you to
connect up and operate the amplifier correctly, ensuring
the greatest satisfaction and long term use. This
instruction manual is divided into seven sections.

••••

Cautions

••••

Installation

••••

Operation

••••

Additional Information

••••

Trouble Shooting

••••

Specifications

••••

Guarantee

CAUTION

POLARISED CONNECTOR (115V PRODUCTS ONLY)

To prevent electrical shock, match wide blade of plug to wide

slot and fully insert

Attention: Pour éviter les chocs électriques, introduire la lame la

plus large de la fiche dans la borne correspondante de la prise et

pousser jusqu'au fond.

To enable you to make full use of the comprehensive
facilities of the amplifier we suggest that you read these
sections which will explain the fundamental operations of
the unit.

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Cyrus Power Amplifier CAUTIONS

Your Cyrus Power is factory set to operate from a fixed
mains supply voltage, which is marked on a label at the
rear of the unit. Before connecting, check that this voltage
is the same as your mains supply, i.e.

230V Products Voltage Range 220V-240V
115V Products Voltage Range 110V-120V

UNPACKING

Always follow the instruction handbook and retain it in a
safe place for future reference.

Before proceeding with installing the Cyrus Power, ensure
that the following items are included in the accessory box:

• Instruction Manual with Guarantee Card

• Power Cable

• 4 Loudspeaker Plugs

After removing these items, please retain the packing for
future use.

LOCATION

Install the amplifier in a well ventilated location where it
will not be exposed to high temperature or humidity.

Avoid installing the Cyrus Power in a location which is
exposed to direct rays of the sun, or near to hot appliances
or radiators. Placing and using the amplifier for long

periods on heat-generating sources will affect
performance and may damage the cabinet. Installation in a
damp or dusty environment may result in a malfunction or
an accident.

RE-LOCATION

The Cyrus Power is supplied ready for use in your
location. Care has been taken to ensure that the power
supply requirements are correctly set. Consult your
Mission distributor to arrange for conversion of your
Cyrus Power should you move to another area with a
different mains voltage supply.

PRECAUTIONS REGARDING INSTALLATION

It is important not to allow any liquid or foreign object fall
into this unit. When routing the power cord avoid running
it over or near sharp objects.
If the amplifier is not to be used for a long period of time,
unplug the unit from the mains power supply.
This unit contains no user serviceable parts, therefore

never

remove any panels from the unit or attempt to
service the unit. In the unlikely event of failure, please
refer to qualified service personnel.

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INSTALLATION Cyrus Power Amplifier

1. -MBLOC Speaker output

2. Right Speaker output (Stereo)

3. STEREO/MBLOC Selector

4. Chain Output

5. RCA Input

6. RCA/BAL Input Selector

7. BAL Input

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8. MC-BUS System Connection

9. Left Speaker output (Stereo)

10. +MBLOC Speaker output

11. Power switch

12. Mains Fuse

13. Power Inlet

14. PSX-R Connection

Fig.1 Amplifier (rear view)

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Cyrus Power Amplifier INSTALLATION

POSITIONING THE UNIT

The Cyrus Power may be positioned as a free standing
unit or alongside another piece of audio equipment. Never
stand the Cyrus Power under another unit. This may
adversely affect the efficient cooling of the Cyrus Power.
Never place the Cyrus Power on a carpet or similar
material which may hamper normal ventilation.

CONNECTING THE UNIT

The Mains Supply

The moulded IEC connector of the mains lead supplied
should be plugged in to the power inlet

13

on the rear of

the unit.

The mains fuse

12

is located on the rear panel next to the
power switch. It must only be replaced with the following
types:

IMPORTANT

NOTE TO USERS OF PSX-R WITH Cyrus Power

In order to use a PSX-R regulated power supply with the
Cyrus Power, certain internal adjustments must be made
to the Cyrus Power which can only be carried out by an
authorised Mission distributor or his agent. Connection
of the PSX-R to a Cyrus Power which is not correctly
adjusted will result in fault condition display on the
Cyrus Power. The Cyrus Power fault indication system
is fully described in the Cyrus Power handbook.

Connecting a

If a PSX-R is to be used with the Cyrus Power, proceed to
connect the umbilical cord of the PSX-R to the 5-pin
Cannon input socket of the Cyrus Power. When correctly
fitted, the connector will latch into place in the socket.
Note that when a PSX-R is in use, both the PSX-R power
supply and the Cyrus Power will require mains power.

PSX-R

Power Supply (Optional)

U.K. / Europe - 230V T1A/20mm
N. America / Far East - 115V T2A/20mm

In the U.K., the Cyrus Power comes with the mains plug
fitted. In the unlikely event that the plug fuse should need
replacing ensure that it is only replaced with a 3 Amp
Fuse.

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Note:

For more details on the PSX-R, please refer to the Cyrus
PSX-R Instruction Manual.

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INSTALLATION Cyrus Power Amplifier

STEREO AND DUAL MBLOC MODES

The Cyrus Power can be configured as either a stereo
50W per channel amplifier or as a single channel 100W
Mbloc mono amplifier. In Mbloc mode not only is there
an increased power advantage but also complete left and
right channel separation. The Cyrus Power is factory set
for stereo operation.

Note:

In Mbloc mode a Cyrus PSX-R regulated power
supply is required for each amplifier, in Stereo mode the
PSX-R is an optional upgrade. Before connecting a PSX-R
power supply to the Cyrus Power, be sure to have your
amplifier converted by your dealer or an authorised Cyrus
service organisation.

Caution:

When the Cyrus Power is installed for Mbloc

operation, connect the loudspeaker cable to the -MBLOC

1

and +MBLOC

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speaker terminals. Loudspeaker
switch boxes and other equipment should not be
connected to the output of the Cyrus Power in Mbloc
mode.

Refer now to the following section if the Cyrus Power is
to be used in a Stereo installation or to page 8 for Mbloc
system connections.

Note:

Ensure all equipment is turned off before any

connections or disconnection's are made.

CONNECTION FOR STEREO SYSTEMS

Stereo Input connection options

Both RCA and balanced input connectors are available to
link the Cyrus Power to a Preamplifier. Recommended
connection options are shown to follow-

1. Bi-amplification with a Cyrus III- use a quality RCA
phono interconnect.

2. Installed next to a Cyrus Pre Preamplifier- use a
quality RCA phono interconnect.

3. Installed with a Cyrus Pre Preamplifier, but placed
next to the speakers- Use Balanced XLR interconnects.

4. Power amplifier for a Cyrus AV system- use a quality
RCA phono interconnect.

Note: In a system which supports both connection options

(such as Cyrus Pre/Cyrus Power), the above are
recommendations only and the final choice is made at
the discretion of the user.

Input Connection to the

Cyrus Power

using RCA

phono cables

Set the STEREO/MBLOC selector switch

6

and the input selector switch

to RCA. Connect a stereo

3

to Stereo

phono interconnect from the output of the preamplifier to
the Cyrus Power's RCA inputs

5

Be sure to observe

.

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