Cyrus 6 Power, 8 Power & X Power
User Instructions
4
GB
GB
INSTALLATION - 8 Power & X Power
Key to the
8 Power
&
X Power
rear panel drawing
(Fig.1a)
1. Right speaker
8. Stereo/Mono selector switch
(- Speaker output mono)
9. Left speaker output -
2. Right speaker output -
10. Left speaker
3 MC-Bus Connection
(+ Speaker Output mono)
4. Right Chain Output
11. PSX-R
Connection
5. Left/Mono Chain Output
12. Power Inlet
6. Left/Mono Input
13. Mains Fuse
7. Right Input
14. Power Switch
Connecting to the AC Mains Supply
Connect the socket on the AC Power cable to the Power inlet
1@
on the rear panel
of the
8/X Power
. Now connect the cable to a suitable AC power point.
The mains power switch
1$
on the rear panel of the
8/X Power
should be left
on for normal operation, except when left unattended for a long period when it
should be switched off or disconnected from the AC supply
.
External Regulated Power Supply -
PSX-R
The
Cyrus PSX-R
is a unique DC power supply which will upgrade the sonic
performance of your
8/X Power
and enhance its current drive. When a
8/X
Power
/
PSX-R
combination is installed, analogue and signal related sections
are powered from this clean, stable power source while other requirements
are supplied internally. This ensures complete isolation of control circuits and
sensitive analogue sections reducing AC mains-borne noise and power
supply ripple.
To connect the PSX-R to the
8/X Power
plug the connector on the umbilical
cord of the
PSX-R
into the Multi-Pole socket on the rear of the
8/X Power
(
1!
Fig.1b) You will need a mains supply for both units.
Two channel or Single channel high power operation
The
Power
may be configured as either a two channel (stereo) amplifier or as
a single channel (mono) amplifier for higher power applications. The
8/X
Power
is factory set for stereo operation.
Stereo systems
Stereo systems may be set up with either a single
8/X Power
set for two
channel (stereo) operation or twin
8/X Powers
set for single channel (mono)
operation.
Audio-Visual multi-channel systems
Both two channel and single channel high power modes may be employed for
the multiple channel requirements of audio-visual systems. Two channel and
single channel amplifiers may also be mixed in these systems if preferred, for
example- three
8/X Power
amplifiers set for single channel (mono) operation
to drive the Front Left, Right and Centre channels and a single Two channel
(stereo) amplifier to drive both the left and right surround channels.
Note:
Ensure all equipment is disconnected from the power before any
connections or disconnections are made.
Input Connection
Two channel (stereo) operation
Set the STEREO/MONO switch
h
to Stereo. Connect a stereo phono
interconnect from the output of the preamplifier to the
8/X Power's
left and
right inputs
f
and
g
. Be sure to observe colour coding of the plugs to keep
left and right channels correctly ordered.
Single channel (mono) operation
When switched for single channel mono operation, twin
8/X Power
amplifiers
are necessary in a stereo system – one for the left and one for the right
channel.
Set the STEREO/MONO switch
h
on both amplifiers to Mono. Connect a
single phono interconnect from the left output of the preamplifier to the ‘M’
Mono input
f
of the left channel
8/X Power
. Connect the right output of the
preamplifier to the ‘M’ Mono
input
f
of the right channel
8/X Power
.
Loudspeaker Connection
Fitting the speaker plugs
Check for polarity indicators (+ and -) on the loudspeaker cable and fit the
plugs. Observe any signal directionality markings indicated on the cable. If an
arrow is printed on the cable it should point toward the loudspeaker.
Two channel stereo speaker connections
Connect the left loudspeaker to the rear panel sockets
1)
(red speaker plug)
and
i
(black speaker plug) of the
8/X Power
. Connect the right loudspeaker
to the rear panel sockets
a
(
red speaker plug) and
b
(black speaker plug) of
the
8/X Power
.
Dual outputs are provided for the convenient connection of bi-wiring speaker
cables. Figure 4a shows a wiring schematic for a bi-wired stereo system.
Single channel mono speaker connections
Connect the left loudspeaker to the left
8/X Power
using the panel sockets
marked M+
1)
(red speaker plug) and M-
a
(black speaker plug).
Repeat this procedure to connect the right channel speaker to the right
channel
8/X Power
. Fig 4b shows a wiring schematic for a bi-wired system
using mono amplifiers.
Audio-Visual multi-channel systems
Connect each
8/X Power
in turn to the system speakers, following the two
channel or single channel instructions above, as appropriate.
Bi-amplification
For convenience of connection in applications such as Bi-Amplification the
Chain outputs
e
and
d
allow more than one
8/X Power
to be connected to a
Pre-Amplifier.
The Chain facility can be used with two or more
8/X Powers
for Bi/Tri-amping
by connecting the Chain output of the first
8/X Power
to the inputs of the next
8/X Power
. Such a system provides the sonic benefits of totally separate
power amplification for the bass and treble units of the loudspeakers.
When adding additional
8/X Powers
to a system, connect a quality RCA
phono interconnect from the Chain output RCA jacks
e
and
d
to the inputs
f
and
g
of the new
8/X Power
. For single channel (mono) chain
installations, connect the ‘M’ chain output
e
of each Mono amplifier to the ‘M’
Mono inputs
f
of the new amplifiers.
When the input connections to the new amplifier are complete, separate
connections may be made to the bass and treble units of the system
speakers. Fig 4c shows a wiring schematic for a bi-amped system using
stereo amplifiers.
MC-Bus connection
Connecting the MC-BUS sockets
c
of the
8/X Power
in an MC-BUS system
provides unified system power control. An MC-BUS loop is established by
connecting single phono cables from the MC-BUS output of one unit to the
MC-BUS input of another in a daisy-chain. Complete the loop by returning the
MC-BUS output of the final component to the MC-BUS input of the first (see
example system connections in Fig.3).
With MC-BUS established you can control the power function of the system
from the front panel or remote control of the main
Cyrus
amplifier or Surround
Processor.
