Cyrus aCA7 User manual

UserInstructions
CyrusaCA7

Cyrus aCA7
English

CAUTIONS Cyrus aCA7
English 2
Congratulations on the purchase of your Cyrus aCA7 pre-
amplifier. 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 the user to
connect and operate this pre-amplifier correctly, thus
ensuring the greatest satisfaction and long term use.
This instruction manual is divided into the following
sections.
Cautions.............................................................................2
Installation.........................................................................4
Operation...........................................................................7
Remote Control...............................................................10
Additional Information..................................................12
Trouble Shooting............................................................15
Remote Control of a Cyrus System ..............................17
Specifications...................................................................19
Guarantee........................................................................20
To enable you to make full use of the comprehensive
facilities of this pre-amplifier we suggest that you read
these sections which will explain the fundamental
operations of the unit.
Always follow the instruction handbook and retain it in a
safe place for future reference.
Before proceeding with installing the Cyrus aCA7, ensure
that the following items are included in the accessory box:
•Instruction Manual
•Power Cable
•Audio Commander Handset
•2 phono cables for MC-Bus connections
•Guarantee Card
After removing these items, please retain the packing for
future use.
UNPACKING
CAUTION
POLARISED CONNECTOR (115V PRODUCTS ONLY)
CONNECTOR POLARISE (PRODUITS 115V SEULEMENT)
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.

Cyrus aCA7 CAUTIONS
3English
SUPPLY VOLTAGE
Your Cyrus aCA7 pre-amplifier is set to operate from the
mains supply voltage marked on the rear of the unit.
Ensure this voltage is the same as your mains supply, i.e.
230V Products Voltage Range 220V-240V
115V Products Voltage Range 110V-120V
Consult your Mission distributor to arrange for conversion
of your Cyrus aCA7 if you move to an area with a
different mains voltage.
LOCATION
Install the Cyrus aCA7 in a well ventilated location where
it will not be exposed to high temperature or humidity.
Avoid installing the Cyrus aCA7 in a location which is
exposed to direct rays of the sun, or near hot appliances or
radiators. Placing the unit on heat-generating sources or
installing it in damp or dusty conditions will affect
performance and may result in malfunction or accident.
POSITIONING THE UNIT
The Cyrus aCA7 may be positioned either free standing or
alongside another piece of audio equipment. Never stand
the Cyrus aCA7 under another unit. This may adversely
affect the cooling of the Cyrus aCA7. Never place the unit
on any surface which may hamper normal ventilation.
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. Do not stand objects on the
power cord.
If the Cyrus aCA7 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.
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.
Important Note for UK Customers
The mains lead of this unit is fitted with a UK 13A Plug. Do
NOT disassemble this plug. If for any reason you remove
the plug, dispose of it safely and do not attempt to re-use it.
The wires in the mains lead are coloured in accordance with
the following code: Blue - neutral, Brown - live.
If these colours do not correspond with the coloured
markings identifying the terminals on your new mains plug:
Connect the Blue wire to the terminal which is marked with
the letter Nor coloured Black.
Connect the Brown wire to the terminal which is marked
with the letter Lor coloured Red.
Ensure that your equipment is connected correctly. If in
doubt, consult a qualified electrician.

INSTALLATION Cyrus aCA7
English 4
1. Headphone Output
2. MC-BUS System Connection
3. Pre-amplifier Output 2
4. Pre-amplifier Output 1
5. Tape Output 2
6. Tape Output 1
7. Tape Input 2
8. Tape Input 1
9. Auxiliary Input 2
Fig. 1 Cyrus aCA7 (rear view)
10. Auxiliary Input 1
11. Audio Visual Input
12. Tuner Input
13. CD Input
14. PSX-R Connection
15. Power Inlet
16. Mains Fuse
17. Balanced Output (L. Channel)
18. Balanced Output (R. Channel)
BAL OUT
RL
L
R
MC-BUS PREOUT2HEADPHONES PREOUT1 TAPE2 TAPE2
OUTPUTS INPUTS
TAPE1 TAPE1 AUX2 AV TU CDAUX1
USE
PSX-R
ONLY

Cyrus aCA7 INSTALLATION
5English
CONNECTING POWER TO THE UNIT
Refer to figure 1, rear panel drawing on page 4.
Plug the moulded IEC connector of the supplied mains
lead into the power inlet on the rear of the unit.
The mains fuse is located on the rear panel. It must only
be replaced with the following types:
U.K. / Europe - 230V T200mA/20mm
N. America / Far East - 115V T400mA/20mm
In the U.K., the Cyrus aCA7 power lead is supplied fitted
with a mains plug. If the plug fuse should need replacing
ensure that it is replaced only with a 3 Amp Fuse.
CONNECTING A CYRUS PSX-R
If a Cyrus PSX-R is to be used with the Cyrus aCA7,
connect the umbilical cord of the PSX-R to the 5-pin
Cannon input socket of the Cyrus aCA7. When correctly
fitted the connector will latch into place in the socket.
No other connections or internal modifications to the
Cyrus aCA7 are needed for PSX-R connection.
Note: Please ensure that the Cyrus aCA7 and the PSX-R
are unplugged from the mains before connecting the units.
When a PSX-R is in use, both the Cyrus PSX-R power
supply and the Cyrus aCA7 will require mains power. For
more details refer to the Cyrus PSX-R Instruction Manual.
CONNECTING SOURCE INPUTS
Connect a quality RCA phono cable between each system
component and the appropriate rear panel socket. Observe
the colour coding of the phono cable for left and right
channel identification. The standard convention is– Right
Channel RED, Left Channel WHITE or BLACK.
The Cyrus aCA7 provides connections for a CD Player –
CD 1#, a tuner – TU 1@, an Audio Visual processor– AV
1!, two auxiliary inputs– AUX1 1) and AUX2 jand two
tape decks TP1 iand TP2 h.
The AUX inputs can be used for connection of a wide
variety of products such as a second CD player, an
electronic keyboard, etc.
Always check the technical specification of source
products before connecting them to your Cyrus aCA7.
Consult your dealer if in doubt.
CONNECTING A TURNTABLE
The Cyrus aCA7 is a line level pre-amplifier. To play a
turntable through your unit you require an external phono
pre-amplifier. The Cyrus aEQ7 phono pre-amplifier is
available from Cyrus which fully integrates with the Cyrus
aCA7 and has comprehensive facilities for both moving
coil and moving magnet cartridges.

INSTALLATION Cyrus aCA7
English 6
CONNECTING A TAPE RECORDER
Two tape decks may be connected to the Cyrus aCA7.
Tape 1 is suitable for all tape decks and other recording
units but does not feature off-tape monitoring.
Tape 2 has a conventional tape loop with full monitoring
facilities suitable for all tape decks including three-head
models with off-tape monitoring.
To connect a tape recorder:
Firstly, connect a phono cable from the Output or
Playback sockets of the tape recorder to the required Tape
Input sockets- hor iof the Cyrus aCA7. Now connect a
second phono cable from the Input or Record sockets of
the tape recorder to the Tape Output sockets for gof the
Cyrus aCA7.
A three head tape recorder should be connected to the
Tape 2 sockets. For other units we suggest Tape 1.
For a fuller treatment of recording topics refer to
Additional Information on page 12. Refer to your recorder
handbook if you are in any doubt.
CONNECTING HEADPHONES
The HEADPHONES socket bis a standard ¼" stereo jack
socket for connection to a pair of conventional
headphones. It should not be used with Electrostatic units.
CONNECTING A POWER AMPLIFIER
The Cyrus aCA7 must be connected to a power amplifier
in order to drive the system loudspeakers. RCA phono and
Balanced XLR connection systems are provided, the
appropriate connection depending on each individual
installation. Where the Cyrus aCA7 is placed close to the
power amplifier we recommend using the RCA phono
connections. If the power amplifier is some distance from
the Cyrus aCA7 (e.g. beside the loudspeakers) balanced
XLR connections may give improved performance.
Connecting RCA phono cables to a power amplifier
Two pairs of RCA output sockets (PRE OUT) dand e
are available on the Cyrus aCA7. Connect a quality phono
cable from one PRE OUT pair to the left and right inputs
of the power amplifier. The other pair may be used for bi-
amping, etc. – see Additional Information on Page 12.
Connecting Balanced XLR cables to a power amplifier
Connect a 3 pin XLR cable between each channel of the
Cyrus aCA7 balanced outputs 1& and 1* and the
corresponding XLR input of the power amplifier.
Note: If RCA and XLR outputs are simultaneously used
to power two stereo amplifiers (or two monobloc pairs),
they must all be Cyrus units. Never connect RCA and
XLR cables to alternate channels of the same amplifier.

Cyrus aCA7 OPERATION
7English
1. Mute
2. Standby Switch
3. Standby Light
4. Headphones Switch
5. Remote Eye
6. Level Control
Fig. 2 Cyrus aCA7 (front view)
7. Tape 2
8. Tape 1
9. Auxiliary 2
10. Auxiliary 1
11. AV (Video)
12. Tuner
13. CD
CD
MUTE PHONES
TU AV AU1 AU2 TP1 TP2

OPERATION Cyrus aCA7
English 8
POWER CONTROL
Refer to figure 2, front panel drawing on page 7.
The STANDBY key cis used for power control. The
Standby light dwill show Red when the Cyrus aCA7 is off
and Green when operating. Selecting any input source will
also switch on the Cyrus aCA7.
SELECTING AN INPUT
The INPUT SELECT keys j - 1# switch between selected
input sources. When an input key is selected, the red
indicator above the key will turn on.
TAPE PLAYBACK
To replay a tape source connected to the TAPE 1 sockets
press the TP1 key i.
To replay a tape source connected to the TAPE 2 sockets
press the TP2 key h. The indicator above the TP2 key will
now light in addition to the selected source. A further press
of the TP2 key will return to the current selected source.
Additionally, the Tape 2 input provides an off-tape monitor
facility. If your tape deck is equipped with three-heads,
selecting the TP2 key enables a recording to be monitored,
whilst recording.
TAPE RECORDING
The signal from the selected source is sent to Tape
Recorders connected to both TAPE 1 and TAPE 2 circuits
automatically. Tape recordings may therefore be made
from the selected source to either, or both of the Tape
Recorders. In addition, tape copying is possible by playing
the tape recorder connected to the TAPE 1 input and
recording to TAPE 2 (See Page 12 for a fuller treatment of
tape recording).
VOLUME CONTROL
The LEVEL CONTROL gof the Cyrus aCA7 performs
the dual functions of volume and balance. The light ring
display around the rotary knob indicates either volume or
balance depending on the current mode of operation.
The Level Control of the Cyrus aCA7 controls the volume
level in 1dB steps. The light ring around the knob is
calibrated to show the current loudness level. When the
volume is at minimum the first indicator on the light ring
will be RED. As the volume increases, a GREEN light will
move clockwise around the ring.
BALANCE CONTROL
The Cyrus aCA7 is equipped with a BALANCE key on the
remote handset. Page 11 has the full procedure for
adjusting channel balance.

Cyrus aCA7 OPERATION
9English
MUTE
Pressing the MUTE Key bwill fade the volume to
minimum. The RED minimum level indicator will light in
addition to the existing GREEN light to show that the
output is muted. Moving the volume knob or pressing the
Mute key fades the signal up to the original setting.
If the level was set very high when the Cyrus aCA7 was
muted, when unmuted it will return at a safe lower setting.
USING HEADPHONES
The HEADPHONES key eon the Cyrus aCA7 front panel
is a special form of Mute switch. When you press the
HEADPHONES key, the main output from the Cyrus
aCA7 to the power amplifier is muted so that you can listen
to the headphones without the speakers. To restore
loudspeaker operation, press this key again.
When Headphones operation is selected, the MUTE light
at the bottom of the light ring will glow Orange
Note: The HEADPHONES key is operational only when
headphones are connected.
Caution: If you have been listening to headphones at high
volume, be sure to turn the level down before you switch to
normal loudspeaker operation.
Volume and Mute Indications
The Cyrus aCA7 always reverts to its last setting when the
MUTE key is toggled. If, when listening to headphones
(Orange mute on) you press the MUTE key, the Mute light
will change to Red and the full system will mute. If you
press the Mute key again the Orange mute light will return.
Standby
If you set the Cyrus aCA7 to Standby when you are in
Headphone mode, when you next bring the unit out of
Standby it will revert to Headphone operation.
If you unplug the headphones after you have set Standby,
when you next switch on the Cyrus aCA7, loudspeaker
operation will be restored.
Refer to Additional Information on Page 12 for more
details.
Normal listening level
Orange mute- ‘phones
Red mute- Full mute
Normal listening level
Normal operation

REMOTE CONTROL Cyrus aCA7
English 10
THE CYRUS AUDIO COMMANDER
The remote control handset of the Cyrus aCA7 provides
unified control over a wide range of Cyrus separates.
REMOTE OPERATION OF THE CYRUS aCA7
The top three rows of keys on the handset replicate the
front panel of the Cyrus aCA7. Other keys control
associated Cyrus units.
Inserting the batteries
Remove the battery compartment cover on the rear of the
handset and insert the four supplied AAA batteries in the
spaces provided observing the polarity markings on the
batteries and the handset. Replace the compartment cover.
Standby Control
Press the ON key hto bring the Cyrus aCA7 out of
Standby (and other Cyrus units connected via MC-Bus).
Press the OFF key ito return the Cyrus aCA7 to Standby.
Selecting an input will also bring the unit out of Standby.
Selecting a Source Input
Press any source key c– gto select and listen to the
appropriate source.
Operating the Tape key
The TP key jcontrols both tape inputs.
To select Tape 1 give a short press on the TP key j.
To select Tape 2 give a long press (½ sec) on the TP key.
When Tape 2 is selected, a single long press of the TP key
will deselect Tape 2.
(To deselect Tape 1, press another source key)
1. Volume Up/Down
2. Aux 2 Input
3. Aux 1 Input
4. CD Input
5. Tuner Input
6. Audio Visual Input
7. System ON
8. STANDBY
9. Tape Inputs/Monitor
10. Mute
11. Balance

Cyrus aCA7 REMOTE CONTROL
11 English
Level and Balance Controls
The keys bare used to adjust both volume
level and channel balance.
Volume
Press to increase the volume level.
Press to decrease the volume level.
Balance
Pressing the key 1! changes the mode of the Level
Control to that of Left/Right Balance.
When Balance mode is selected, the light ring around the
level knob will change function to work in "reverse video"
with the unlit section indicating the position of L-R
balance. In this mode, you can control the L-R balance by
up to +/-4dB as well as switching one channel off
completely when the balance is set to an extreme position.
Typical Balance indications are shown below.
To adjust Channel Balance:
Press the key 1! to select Balance mode.
Press to move the channel balance to the Right.
Press to move the channel balance to the Left.
Press the key again to restore normal Volume mode.
If you leave the Cyrus aCA7 set to Balance, after 5 seconds
of inactivity the mode automatically reverts to indicate
volume level.
As an alternative to using the handset keys to adjust the
balance, you may use the key to select balance mode
and then adjust the balance using the Level Control on the
front panel.
Mute
Pressing the MUTE key 1) fades the main volume to zero.
Pressing the MUTE key again restores the volume to the
level it was at prior to selecting Mute (unless the volume
was set very high in which case the Cyrus aCA7 will
restore at a safe lower level of –15dB).
You cannot select or deselect headphones via the handset.
SYSTEM OPERATION WITH THE COMMANDER
When a Cyrus CD player, FM7 tuner and suitable
ancillary units are connected to the Cyrus aCA7,
integrated system operation is possible using the Remote
Commander handset (see page 17 for details).
Channel Balance
Normal Channel Balance R-CH +2dB Channel Balance L-CH only

ADDITIONAL INFORMATION Cyrus aCA7
English 12
Power
•When first powered from the mains, the Cyrus aCA7
will run a self-test and then revert to Standby. When
first switched on from standby the CD input is
selected and the volume is set to minimum.
•When the Cyrus aCA7 is set to standby after a period
of use, Input selection and Volume/Balance settings
are retained. If the unit is put in standby while set to a
very high volume level, the Cyrus aCA7 will power
on at a safe level of -15dB when next switched on.
•These conditions also apply to the Mute functions.
•When switched to Standby, the audio circuits of the
Cyrus aCA7 are shut down for optimal safety.
Volume and Balance
•The volume control system of your Cyrus aCA7 is a
musically transparent precision 1dB - step attenuator.
This design is precise to limits of +/-0.1dB
throughout all 86 steps of attenuation available.
•As the volume setting of your Cyrus aCA7 is
achieved independently for Left and Right channels,
channel balance can be controlled with precision by
applying an offset to either channel. Channel balance
is maintained to +/- 0.2dB across the entire range.
Bi-amping / Tri-amping
•In addition to the balanced output, there are two sets
of RCA sockets on the Cyrus aCA7. This enables you
easily to connect additional power amplifier blocks to
upgrade your loudspeaker system for Bi-amping or
Tri-amping. Stereo and Monobloc amplifiers are
available from Cyrus for this application.
Powering each drive unit separately increases
maximum output and dynamic range and, with each
amplifier driving a limited frequency band, clarity
imaging and transparency are all greatly improved.
NOTES ON RECORDING
Unless you own a 3 head tape deck, your recording unit
whether MD, DAT or CD-R will not have true playback
monitoring so you may use Tape 1 or Tape 2. If you have
two recording units, say MD and cassette deck, we
suggest you connect the MD player to Tape 1 and the
cassette deck to Tape 2 for greater flexibility.
Note: You cannot record from Tape 2 to Tape 1.
Many high quality VCRs produce acceptable audio
recordings and their long tape times are useful. Even
without an AV processor, by using your VCR in
conjunction with the Cyrus aCA7 the audio component of
your TV and Video programmes will be hugely improved.
Consult your dealer for advice if in doubt.
KNOW YOUR CYRUS aCA7

Cyrus aCA7 ADDITIONAL INFORMATION
13 English
PROGRAMMABLE INPUT SENSITIVITY
In all audio systems, there will be audible changes in
volume when switching from one source to another
because source component output levels vary. To
compensate for this, each input of the Cyrus aCA7 can be
matched in level with reference to the CD input.
To alter an input level:-
1. Select CD input on the Cyrus aCA7 and set the
volume control to a comfortable listening level.
2. Select the required input (tuner, etc.) on the Cyrus
aCA7 front panel. Keep the input key pressed and the
display will change to indicate input offset (see
diagrams).
3. Adjust the level control to give the same audible
volume as the CD player. The display indicates the
offset applied.
4. Store the offset by pressing the input key again.
To restore the factory settings, follow steps 2 to 4, setting
the display to 'zero offset' - see the diagram below
MC-BUS AUTO-CALIBRATION - AV-MASTER
When a Cyrus AV master is wired into the MC-BUS loop,
precise volume calibration will take place when the AV
input is selected on the Cyrus aCA7. Refer to your Cyrus
AV-master handbook for further details.
PSX-R REGULATED POWER SUPPLY -
The PSX-R is a highly regulated DC power supply. Its use
will upgrade the sonic performance of your Cyrus aCA7.
No adjustments are necessary when connecting the Cyrus
PSX-R to the Cyrus aCA7 - full connection instructions
can be found on page 5.
This display shows that the selected
input (e.g. tuner) has been programmed
to be 2dB more sensitive than the CD
input. This will increase the sensitivity
of the tuner input to give equal volume
levels from CD and tuner.
This display shows that the selected
input (e.g. AV) has been programmed
to be 4dB more sensitive than the CD
input. This will increase the sensitivity
of the AV input to give equal volume
levels from CD and the AV unit.
This display shows the factory setting
for the Cyrus aCA7.
It indicates that the selected input has
the same sensitivity as the CD input
(zero offset display).

ADDITIONAL INFORMATION Cyrus aCA7
English 14
MC-BUS SYSTEM CONNECTION
The MC-Bus system (see drawing on page 4) can provide
unified power control of a complete Cyrus system from
your Cyrus aCA7. MC-Bus connections are wired as a
'loop' with single RCA phono interconnects. The diagram
below shows a typical Cyrus system of Cyrus CD Player,
Cyrus FM7, Cyrus aCA7 and Cyrus Power Amplifier with
the MC-Bus loop connected. Connect the first cable
between the MC-Bus output cof the Cyrus aCA7 and the
MC-Bus input of the next Cyrus component. Continue to
wire each MC-Bus output to the next input, returning to
the Cyrus aCA7 input to complete the loop.
OPERATION WITH MC-BUS CONNECTED
When MC-BUS connections have been made it is possible
to control the power function of the entire system from the
Cyrus aCA7.
For example, if you select 'CD' from either the Cyrus
aCA7 front panel or the Audio Commander, you will
switch on the Cyrus aCA7, the Cyrus CD player and any
connected Cyrus Power amplifiers.
When the Cyrus aCA7 is set to Standby, all system
components will also switch off.
Cyrus CD Player
Cyrus FM7 Tuner
Cyrus aCA7 Cyrus Power Amplifier

Cyrus aCA7 TROUBLESHOOTING
15 English
TROUBLESHOOTING GUIDE
If you suspect your Cyrus aCA7 is not operating to
specification, check carefully all connections using the
installation section of this handbook. If problems persist,
the checklists below may help.
No Sound from either Speaker
•Check that the pre-amplifier and the power amplifier
is on. The standby light should be green.
•Check that the pre-amplifier responds to different
front panel commands.
•Check that the MUTE light on the volume control
light ring is completely "OFF" -( see Page 9).
•Check that the relevant programme source is selected
and is working (e.g. the CD Player is playing).
•Check that the Tape Monitor (Tape 2) is not selected
inadvertently.
•Check that the headphones work normally.
•Check both the input and speaker connections to the
power amplifier.
No Sound from one Speaker
•Check the Balance Control is not set to extreme
limits.
•If your loudspeakers are fitted with protection fuses,
check that the fuse is intact.
•Check interconnect cable integrity on the rear panel
and at source. Try another interconnect cable.
•Check the interconnect cable integrity between the
Cyrus aCA7 and the power amplifier.
•Check the speaker cable integrity of the missing
channel at the power amplifier and loudspeaker.
If the problem persists:
•Change the programme source using the suspected
interconnect cable and check that the problem still
exists. If the fault clears the original source is at fault.
•Interchange the left and right connections of the
interconnect cable at SOURCE. If the missing
channel switches over then there is a problem in one
channel of the source or the interconnect.
Note: Restore the system to its original configuration after
completion of the above series of tests.
Ensure the power to all units is switched off before
altering any connections and only switch the power on
again when the new connections are fully made.

TROUBLESHOOTING Cyrus aCA7
English 16
Spurious Sounds from the Loudspeakers
If you experience strange or unnatural noises from your
system proceed as follows:
•Select another source to ensure that this is not a
common problem. If the problem remains, switch the
Cyrus aCA7 off at the mains or disconnect the mains
plug. Replace the mains plug after a few seconds and
restore power to the Cyrus aCA7. If the fault persists
or you are in any doubt, consult your dealer.
•If the problem is limited to a single source, check the
integrity of the interconnection to the source and in
the case of a phono turntable, check that the phono
ground wire is secured at the rear panel of the
associated cartridge pre-amplifier.
FAULT INDICATION SYSTEM
The Cyrus aCA7 has a fault indication system to help you
to diagnose the cause of a problem. Fault indications are
presented by the Standby light on the front panel.
•Flashing RED
There is a problem with the internal power supply of the
Cyrus aCA7. Switch the unit off at the mains and switch
on again after a few seconds. If the indicator still flashes,
return the unit to your dealer for attention.
Fault Indications involving PSX-R connections
•Flashing RED
A PSX-R that is switched off is connected to the Cyrus
aCA7.
A PSX-R has been disconnected while the Cyrus aCA7 is
operating.
There is a fault with the internal power supply of the
Cyrus aCA7.
•Flashing Green
A PSX-R has been connected while the Cyrus aCA7 is in
normal operating mode.
In all the above cases you should switch all units off, fully
disconnect the PSX-R, and switch on the aCA7 again.
If normal operation resumes, switch the Cyrus aCA7 off
and re-connect the PSX-R following the instructions on
Page 5 of this manual. The system should now work
normally.
If the fault indications persist, return the suspect unit to
your dealer for attention.

Cyrus aCA7 REMOTE SYSTEM OPERATION WITH THE AUDIO COMMANDER
17 English
REMOTE POWER CONTROL
Your Cyrus aCA7 and its associated power amplifier/s
may be turned on by selecting any Source Key bon the
handset. Pressing the TU or the CD Key will also switch
the relevant Cyrus unit on. To switch the system power off
from a remote position, press the STANDBY Key d.
REMOTE CONTROL OF THE CYRUS FM7
Auto Tuning: Pressing the SEEK UP/DOWN key iwill
cause the FM7 to scan up or down the band, stopping
when a station with usable signal strength is detected.
Storing a Preset: Tune in a station and press the Memory
STORE key j. The preset digits on the display will flash
prompting you to enter a two-digit preset location number.
For numbers under 9 the digit must be preceded by a zero.
You may store 29 preset locations from the handset.
Recalling a Preset: Enter a two-digit number from 1 to
29 via the NUMBER keypad 1). Location numbers 3 to 9
can be accessed by a single digit entry.
Scanning Station Presets: Pressing the NEXT or
PREVIOUS keys hallows you to scan all the stations that
have been preset on the FM7. The preset station numbers
appear on the tuner display. (Some FM7s may not have
this feature: consult your dealer for details of an upgrade).
Mono Operation: To enable mono, press the MONO key
1#. The mono symbol will show in the FM7’s display.
Selecting mono will reduce background noise on weak
stereo transmissions Press the key again to restore Stereo.
Display: The DISPLAY key 1$ toggles the display of the
FM7 off and on. Switching off the display eliminates its
digital traffic and improves the FM7’s performance.
1. Source Keypad
2. System On
3. System Standby
4. Pause (CDs)
5. Play (CDs)
6. Open/Close (CDs)
7. Next/Previous (CDs & FM7)
8. Seek Up/Down (CDs & FM7)
9. Memory Store (CDs & FM7)
10. Number Keypad (CDs & FM7)
11. Repeat (dAD1)
Phase Invert (Other CDs)
12. Time Display (CDs)
13. Mono (FM7)
14. Display On/Off (CDs & FM7)

REMOTE SYSTEM OPERATION WITH THE AUDIO COMMANDER Cyrus aCA7
English 18
REMOTE CONTROL OF CYRUS CD PLAYERS
Operating the Disc Tray: If the disc is stationary, one
touch of the STOP/OPEN key gwill open the tray. A
second press will close the tray.
When a disc is playing, pressing STOP once will stop the
disc: pressing STOP twice will stop the disc and open the
tray. A long continued depression of the STOP key will
both stop the disc and open the CD loading tray.
Playing a Disc: To play a disc, press the PLAY key 1@.
Play will start from track 1, or from the first track of a
stored program sequence.
Note: Discmaster, dAD7 – If you press PLAY whilst a
disc is playing, the player will revert to the start of the
current track and replay from there.
Pause: Press the PAUSE key eto pause the track being
played. Press the PLAY key fto resume playing the disc.
Search: Use the SEEK UP/DOWN key i. Press the
SEEK UP key to engage Forward Search. Press the SEEK
DOWN key to engage Reverse Search.
Previous/Next Track Selection: Pressing the NEXT or
PREVIOUS keys iallows you to advance or regress
successively through all the tracks on the CD. Track
indications appear on the CD player display.
Display: The DISPLAY key 1$ toggles the display on/off.
Time Display key 1@. This toggles the display between:
Elapsed Time ( ), - the time elapsed from the
beginning of the current track, and
Remaining Time ( ), - the time remaining to the
end of the disc or a program, if stored.
Direct Access Numeric Keypad: Press a number key 1)
to select and play a track. The track number appears on the
display. If there are more than ten tracks the CD player
will briefly wait for a second digit where appropriate.
Program Storage: To store a program of up to 20 tracks:
dAD3, dAD1 - Select a track using the number keypad or
the NEXT/PREVIOUS keys and then press the Memory
STORE key h. The display confirms memory storage.
Discmaster, dAD7 – Select the desired track using the
NEXT/PREVIOUS keys and then press the Memory
STORE key h. The display confirms memory storage
When a program is stored, the keypad will enable access
only to tracks included in the program memory.
Phase Reversal - Cyrus dAD3, dAD7, Discmaster:
Pressing the key 1! reverses the phase of both channels
by 180°. The phase reverse symbol will show in the
display. Left and right channel balance is unaffected.
Press the key again to restore normal phase.
Repeat – Cyrus dAD1: Pressing the key 1! enables
continuous play of a CD or a program sequence.

Cyrus aCA7 SPECIFICATIONS
19 English
AUDIO PERFORMANCE
Input Sensitivity....................................................200mV
Input Impedance.......................................................50kΩ
Volume Control Accuracy................................+/-0.1dB
0dB to -86dB
Channel Balance.................................................+/-0.2dB
0dB to -86dB
Output Level & Output Impedance
RCA Line...................................................... 381mV/47Ω
XLR Balanced ............................................ 775mV/100Ω
Headphones..................................................... 4.2V/120Ω
Frequency Response (-3dB)1Hz, 100kHz
Signal to Noise Ratio..........................................107dBA
(’A’ WTD Ref 500mV I/P)
THD+N (20-20kHz) ..........................................<0.005%
POWER SUPPLY
Voltage
See the plate attached to the rear of unit
Power Consumption
Standby........................................................................ 2W
Operational.................................................................. 9W
Safety Compliance
Compliant to the requirements of EN 60065
EMC Compliance
Compliant to EN55013 & EN55022 ............... Europe
ENCLOSURE
Dimensions (WxHxD).........................215 x 75 x 365 mm
Weight......................................................................3.1Kg.
Material......................................................Die cast chassis
The company reserves the right to change this specification without prior notice.
Iss.01-9804 File:7TEN8407.WIM