Contents
Page
Contents/ Introduction/ SafetyInstructions 1
Radius 45 2
Radius 90 3
Radius 180 4
Radius 45/90/180 Wall Bracket Fixing 5
Radius 225 6
Radius 250 7
Radius 225/250Wall Bracket Fixing Instructions 8
Radius 270 9
Radius 360 & Radius 720 10
Fine Tuning & Trouble Shooting the Radius 360 & 720 13
System Wiring Configurations 14
Ancillary Equipment/ Guarantee& Service 15
Claims Underthis Guarantee 16
Introduction
Congratulationson purchasing Monitor Audio loudspeakers. We are confident they
will provide a reliable, high performance sound for many years as only quality
components have been used throughout.
Monitor Audio are a highly respected member of the ‘Guild of Master Craftsmen’
with over 30 years of experience in the art of traditional wood working techniques
and leading edge drive unit technology. This blend of experience and technology
brings you the Radius Series.
Please follow this user manual carefully as it contains important information about
positioning and set up procedures. For further advanced informationon system
set-up, FAQ’s and multi-lingual support please refer to our website at:
www.monitoraudio.co.uk
Safety Instructions
1. Water & Moisture: The loudspeaker should not be used near water - for
example; bathtub, washbowl, kitchen sink, and washing machine, in a wet
basement or near a swimming pool. Under no circumstance should plants or fish
bowls be placed on the loudspeaker
2. Heat: The loudspeaker should not be placed near any heat source such as
radiators, open fires, stoves, direct sunlight and any other appliance that produces
heat.
3. Cleaning: Great care and attention has gone into the materials chosen to
produce the Radius loudspeakers. A gentle wipe with a dry, clean cloth is all that is
required to remove any dust. Treat them as you would a fine piece of furniture
because that is how they have been designed.
©Monitor Audio 2005 Rev 2
1
nit
Technical Specification
Positioning
The Radius 45 can be positioned on a shelf by fitting the rubber feet provided to
the underside of the speaker to stop vibrations. Alternatively, you can chooseto fix
the Radius 45 to a wall by using the high-quality metal alloy wall bracket provided.
A specially designed Floor Stand can be purchased from your local authorised
Monitor Audio dealer for placement in free space (available soon). To fix your
speaker to the wall when using the wall bracket, please refer to the ‘Wall Bracket
Fixing Instructions’ in the wall bracket carton.
Configuration
The uniquely designed, ultra compact Radius 45 has been primarily designed as a
satellite speaker for use in a multi-channel audio or video system. Combined with
the Radius 360/720 subwoofer, the Radius 45 forms an extremely discreet system
that can be wall or stand mounted to fit in with a modern lifestyle environment. The
rear firing gold C-CAM tweeter is able to spread the sound around the room to
create a wide sound-stage, giving the apparent performance of a much larger
speaker system. Please refer to the section; ‘System Wiring Configurations’ on
page 14. NOTE: When used with an A/V receiver amplifier or processor the
speaker setting should be set to ‘small’ and the crossover frequency set to 120Hz.
If the receiver only has a 80/100 Hz setting it must be noted that the overall power
handling and maximum soundpressure level will be reduced.
NOTE: The Radius 45 is fitted with a PTC device. This protects the drive unit and
tweeter from being over driven. The PTC is a thermal device. When too much
current is passed through it, it gets hot and trips out. If the sound should suddenly
cut out, please turn your system off and allow the PTC to cool down. After a short
while you can then turn your system back on again. If the PTC does trip, turn the
volume down slightly to help prevent it happening again.
Grille Fitment
To help the Radius 45 fit into any life-style environment we include a choice of
silver and black grilles (silver and white with white Radius 45) as standard. You will
find the spare grille enclosed within the polystyrene packaging end caps.
If you wish to change the grille colour, you can do this by carefully removing the
grille, using your fingers to gradually pull the existing grille off the cabinet. To fit a
grille, ensurethe badge is correctly orientated and gently press the grille into place.
Frequency
Response
120 Hz –
22 KHz
Impedance
Bass
Alignment
Sealed
Cabinet
Nominal
8Ω 87dB 101dBA 25W 50W 5-25 W
Sensitivity
(1w@1m)
Drive U
Complement Bass
1 x 3” MMP 2 (Second
generation metal matrix
polymer)
©Monitor Audio 2005 Rev 2
Maximum
SPL
Drive unit
Complement
Tweeter
1 x 20mm C-
CAM gold dome
tweeter. Rear
firing.
2
Power
Handling Full
Range
(R.M.S)
Dimensions
9.5 H x 9.5 W
External
(cm)
x 9.5 D
System
Power
Handling
(R.M.S)
Recommended
Weight Kg
(each)
0.95
Amplifier
Requirements
Positioning
Technical Specification
The Radius 90 can be positioned on a shelf by fitting the rubber feet provided to
the underside of the speaker to stop vibrations. Alternatively, you can choose to fix
the Radius 90 to a wall by using the high-quality metal alloy wall bracket provided,
or by purchasing the specially designed bespoke Radius Floor Stand from your
local authorised Monitor Audio dealer. To fix your speaker to the wall, please refer
to the ‘Wall Bracket Fixing Instructions’ in the wall bracket carton. When using the
wall bracket, we do not recommend connecting the loudspeaker using 4mm plugs
into the ends of the terminals. Instead the connection can be made by unscrewing
the terminal cap and using the through hole. The terminal cap can be retightened
to provide a secure connection.
Configuration
The Radius 90 is extremely versatile and can be used in a number of system
configurations. It is fully magnetically shielded and can be positioned as close to a
TV as you wish. On it’s own it can be used in a two-channel stereo system for use
in a small room, or to provide background music in a kitchen or bedroom.
Alternatively the Radius 90 can be used as part of a Home Theatre system or
multi-channel audio set-up. The Radius 360 or 720 subwoofers can be used with
the Radius 90 to provide deep, powerful bass. Please refer to the section; ‘System
Wiring Configurations’ on page 14.
Grille Fitment
To help the Radius 90 fit into any life-style environment we include a choice of
silver and black grilles (silver and white with white Radius 90) as standard. You will
find the spare grilles enclosed within the polystyrene packaging end caps.
If you wish to change the grille colour, you can do this by carefully removing the
grille, using your fingers to gradually pull the existing grille off the cabinet. To fit a
grille, ensurethe badge is correctly orientated and gently press the grille into place.
Frequency
Response
85 Hz –
25 KHz
Nominal
Impedance
Bass
Alignment
Rear
ported
bass reflex
8Ω 87dB 105dBA 60W 100W 10-100 W
Sensitivity
(1w@1m)
Drive Unit
Complement Bass
1 x 4” MMP 2 (Second
generation metal matrix
polymer)
©Monitor Audio 2005 Rev 2
Maximum
SPL
Complement
1 x 25mm C-
dome tweeter
Drive unit
Tweeter
CAM gold
3
Power
Handling Full
Range
(R.M.S)
Dimensions
19 H x 12 W
External
(cm)
x 14 D
System
Power
Handling
(R.M.S)
Recommended
Weight Kg
(each)
2
Amplifier
Requirements
Positioning
Technical S
pecification
The Radius 180 can be positioned vertically (portrait) or horizontally (landscape).
The Radius 180 can be positioned on a shelf by fitting the rubber feet provided to
the underside of the speaker to stop vibrations. Alternatively, you can choose to fix
the Radius 180 to a wall by using the high-quality metal alloywall bracket provided,
or by purchasing the specially designed bespoke Radius Floor Stand from you
local authorised Monitor Audio dealer. To fix your speaker to the wall, please refer
to the ‘Wall Bracket Fixing Instructions’ in the wall bracket carton. When using the
wall bracket, we do not recommend connecting the loudspeaker using 4mm plugs
into the ends of the terminals. The connection can be made by unscrewing the
terminal cap and using the through hole. The terminal cap can be retightened to
provide a secure connection.
Configuration
The Radius 180 is extremely versatile and can be used in a number of system
configurations. It is fully magnetically shielded and can be positioned as close to a
TV as you wish. On it’s own it can be used in a two-channel stereo system as part
of a multi-channel audio/ Home Theatre system. The Radius 360 or 720
subwoofers can be used with the Radius 180 to provide deep, powerful bass.
Please refer to the section; ‘System wiring configurations’ on page 14.
Grille Fitment
To help the Radius 180 fit into any life-style environment we include a choice of
silver and black grilles (silver and white with white Radius 180) as standard. You
will find the spare grilles enclosed within the polystyrene packaging end caps.
If you wish to change the grille colour, you can do this by carefully removing the
grille using your fingers to gradually pull the existing grille off the cabinet. To fit a
grille, ensurethe badge is correctly orientated and gently press the grille into place.
Frequency
Response
60 Hz –
25 KHz
Nominal
Impedance
Bass
Alignment
Front
ported
bass reflex
Sensitivity
(1w@1m)
8Ω 87dB 105dBA 60W 100W 10-100 W
Drive Unit
Complement Bass
1 x 4” MMP 2 (Second
generation metal matrix
polymer)
Maximum
SPL
Complement
1 x 25mm C-
dome tweeter
Drive Unit
Tweeter
CAM gold
Power
Handling Full
Range
(R.M.S)
Dimensions
35 H x 12 W
External
(cm)
x 9.5 D
System
Power
Handling
(R.M.S)
Recommended
Weight Kg
(each)
2.3
Amplifier
Requirements
4
©Monitor Audio 2005 Rev 2
Radius 45/90/180 Wall Bracket
WARNING: For safety reasons do not attempt to fix these speakers to your wall
if you are unsure of your ability to provide a secure and safe fixing. You will need to
determine where to fit the bracket and the structure of the wall. If unsure, please
obtain the services of a competent qualified tradesperson.
WARNING: Ensure that there are no water pipes, or electricity cables running
behind wherethe wall bracket is going to be secured. Work from secure steps and
avoid trailing wires.
To fix your radius product to it’s bespoke wall bracket please refer to the fixing
instructions found in the Wall Bracket Carton. These instructions give a well
detailed approach on fixing the bracket. A template is also provided for assistance.
©Monitor Audio 2005 Rev 2
5
Positioning
Technical Specification
The Radius 225 can be positioned vertically (portrait) or horizontally (landscape)
and has been designed ideally to be used with a plasma TV or in places where
space is at a premium. The Radius 225 can be positioned on our bespoke table
stand or shelf by fitting the rubber feet provided to the underside of the speaker.
Alternatively you can choose to fix the Radius 225 to a wall by using the highquality bespoke wall bracket provided. Please refer to the ‘Radius 225/250 Wall
Bracket Fixing Instructions’on page 8.
Configuration
The Radius 225 is fully magnetically shielded and can be positioned as close to a
TV as you wish, either as a pair in a two-channel stereo system or as part of a
multi-channel audio/ Home Theatre system. The Radius 360 or 720 subwoofers
can be used with the Radius 225 to provide deep, powerful bass. Please refer to
the section; ‘System wiring configurations’ on page 14.
Grille Fitment
To help the Radius 225 fit into any life-style environment we include a choice of
silver and black grilles (silver and white with white Radius 225) as standard. You
will find the spare grille enclosed within the polystyrene packaging trays. We have
also included a spare badge. This is for when the Radius 225 is used as a centre
channel speaker. If you don’t like the factory fitted location of the badge, you can
carefully remove this badge and place the enclosed spare badge in your preferred
location.
If you wish to change the grille colour, you can do this by carefully removing the
grille using your fingers to gradually ease the existing grille off the cabinet. To fit a
grille, gently press the grilleinto place
Frequency
Response
55 Hz –
25 KHz
Nominal
Impedance
Bass
Alignment
Front
ported
bass reflex
8Ω 90dB 108dBA 120W 140W 20-120 W
Sensitivity
(1w@1m)
Drive Unit
Complement Bass
2 x 4” MMP 2 (Second
generation metal matrix
polymer)
©Monitor Audio 2005 Rev 2
Maximum
SPL
Complement
1 x 25mm C-
dome tweeter
Drive Unit
Tweeter
CAM gold
6
Power
Handling Full
Range
(R.M.S)
Dimensions
61 H x 12 W
External
(cm)
x 10.5 D
System
Power
Handling
(R.M.S)
Recommended
Weight Kg
(each)
4.2
Amplifier
Requirements
Positioning
Technical Specification
nit
The Radius 250 can be positioned vertically (portrait) or horizontally (landscape)
and has been designed ideally to be used with a large plasma TV or in places
where space is at a premium. The Radius 250 can be positioned on our bespoke
table stand, or shelf by fitting the rubber feet provided to the underside of the
speaker. Alternatively you can choose to fix the Radius 250 to a wall by using the
high-quality bespoke wall bracket provided. Please refer to the ‘Radius 225/250
Wall Bracket Fixing Instructions’on page8.
Configuration
The Radius 250 is fully magnetically shielded and can be positioned as close to a
TV as you wish, either as a pair in a two-channel stereo system or as part of a
multi-channel audio/ Home Theatre system. The Radius 360 or 720 subwoofers
can be used with the Radius 250 to provide deep, powerful bass. Please refer to
the section; ‘System wiring configurations’ on page 14.
Grille Fitment
To help the Radius 250 fit into any life-style environment we include a choice of
silver and black grilles (silver and white with white Radius 250) as standard. You
will find the spare grille enclosed within the polystyrene packaging trays. We have
also included a spare badge. This is for when the Radius 250 is used as a centre
channel speaker. If you don’t like the factory fitted location of the badge, you can
carefully remove this badge and place the enclosed spare badge in your preferred
location.
If you wish to change the grille colour, you can do this by carefully removing the
grille using your fingers to gradually ease the existing grille off the cabinet. To fit a
grille, gently press the grilleinto place
Frequency
Response
50 Hz –
25 KHz
Bass
Alignment
Twin, Front
ported bass
reflex
Power
dome
Handling
Full
Range
(R.M.S)
76 H x 12 W
Nominal
Impedance
8Ω 90dB 108dBA 120W 20-120 W
Complement Bass
2 x 4” MMP 2 (Second
generation metal matrix
Drive U
polymer)
Sensitivity
(1w@1m)
Maximum
SPL
Drive Unit
Complement
Tweeter
1 x 25mm C-
CAM gold
tweeter
External
Dimensions
(cm)
x 10.5 D
Recommended
Requirements
7
©Monitor Audio 2005 Rev 2
Amplifier
Weight
(each)
4.3
Kg
Radius 225/250 Wall Bracket Fixing Instructions
WARNING: For safety reasons do not attempt to fix these speakers to your wall
if you are unsure of your ability to provide a secure and safe fixing. You will need to
determine where to secure the brackets and the structure of the wall. If unsure,
please obtain the services of a competent qualified tradesperson.
WARNING: Ensure that there are no water pipes, or electricity cables running
behind wherethe wall bracket is going to be secured. Work from secure steps and
avoid trailing wires.
The Radius 250 is fitted with two ¼ UNC inserts. These can be found under the
factory fitted wall brackets. These inserts have been put in place for use with other
after market wall brackets.
For detailed information on fixing your Radius 225/ 250 to the wall, please refer to
the fixing instruction foundin with the Wall Fixing Plate.
©Monitor Audio 2005 Rev 2
8
Positioning
Technical Specification
The Radius 270’sare the only floor standing loudspeaker in the Radius line up.
These excellent performing floor-standers, come ready to play straight out of the
box with stabilizing plinths already attached (we do not recommend that you take
this plinth off). To improve the bass response you can fit the acoustic spikes to the
underside of the plinths. These simply screw in to the remaining four holes in the
bottom of each plinth. Caution must be taken when handling the spikes as they
are very sharp. The Radius 270’sshould be positioned no closer than 2 –2.5
metres apart for optimum sound.
Configuration
The Radius 270’scan be used in a number of system configurations. They are fully
magnetically shielded and can be positioned as close to a TV as you wish. On
their own they can be used in a two-channel stereo system for use in a medium
size room. Alternatively the Radius 270’scan be used as part of a Home Theatre
system or multi-channel audio set-up. The Radius 360 or 720 subwoofers can be
used with the Radius 270’sto provide deep, powerful bass. Please refer to the
section; ‘System Wiring Configurations’ on page 14.
Grille Fitment
To help the Radius 270’sfit into any life-style environment we include a choice of
silver and black grilles (silver and white with white Radius 270’s) as standard. You
will find the spare grilles enclosed within the polystyrene packaging end caps. The
spare grille with the badge should be used on the bottom bass driver of each
cabinet. However this is not essential. You can changethem to the mid bass units
if you so wish.
If you wish to change the grille colour, you can do this by carefully removing the
grille, using your fingers to gradually pull the existing grille off the cabinet. To fit a
grille, ensurethe badge is correctly orientated and gently press the grille into place.
Frequency
Response
50 Hz – 25
KHz
Nominal
Impedance
Bass
Alignment
Front
ported
bass reflex
8Ω 89dB 107.5dBA 120W 140W 40-140 W
Sensitivity
(1w@1m)
Drive Unit
Complement Bass
2 x 4” MMP 2 (Second
generation metal matrix
polymer)
©Monitor Audio 2005 Rev 2
Maximum
SPL
Complement
1 x 25mm C-
dome tweeter
Drive Unit
Tweeter
CAM gold
9
Power
Handling Full
Range
(R.M.S)
Dimensions
92.5 H (inc
Plinth) x 12 W
Plinth: 18.5 x
External
(cm)
x 14 D
18.5
System
Power
Handling
(R.M.S)
Recommended
Weight Kg
(each)
8
Amplifier
Requirements
&
Unpacking & Installation
WARNING: The Radius 720 is very heavy, and we recommend this being a two
person lift only.
Remove the clear plastic, bass driver transit protection disk(s). It is important to
position the subwoofer initially to have easy access to the control panel. Make sure
all your cables will reach easily and leave the Radius 360/720 unplugged from the
mains electricity supply, until the installation and initial set-up procedure is
complete.
The optimal control settings will ultimately depend entirely on your system
configuration.For initial trials set the controls as follows:
Volume - Should be set to the minimum position.
Frequency - Should be set to approximately 100 Hz.
Phase - Should be set initial to 0 degrees.
Mode (R360 only) - If you are setting your system up as two channel, set the
mode switch in “music” mode. If you are installing a predominately home cinema
system it may be more effective to set mode switch to “movies” position.
Crossover/LFE (R720 only) – If your subwoofer is being used with a stereo
integrated/pre/power amplifier, this should be set to ‘crossover’. If your subwoofer
is being used with an AV amp/receiver with a dedicated subwoofer output, this
should be set to ‘LFE.’.
WARNING: Do not adjust the main voltage selector,as this is factory pre-set.
Position/Location
Your Radius 360/720 Subwoofer is magnetically shielded and can be located in
close proximity to a T.V. No matter where you place your Radius 360/720, you
must allow sufficient spacing for ventilation of the rear panel. We recommend this
distance to be not less than 100mm (4”).
Subwoofer Connections
There are a number of ways to connect your subwoofer into your system. One
uses loudspeaker cables; the other uses interconnect cables with RCA phono
plugs. Looking at the rear panel of your subwoofer you will see two sets of speaker
terminals, one labelled ‘amplifier input’, the other ‘speaker output’, and RCA phono
sockets labelled ‘input’ (right and left).
Please refer to the section; ‘System Wiring Configuration’ on page 14.
If you have a Radius 720, and wish to connect more than one subwoofer, you can
do this by using the RCA phono output connectors on the amplifier to ‘daisy chain’
the subwoofers together.
©Monitor Audio 2005 Rev 2
10
Radius 360/720 Features
1. Power Switch with Auto off Facility: The power switch has two positions: Off -
Auto On. In the Auto On position the sub-woofer unit will remain in standby mode
until the unit receives an input signal (greater than 4mV). If the subwoofer unit does
not receive a signal within 15-20 minutes, it will switch to standby mode until it
receives a further signal.
2. Mode Switch (R360 only): This facility is used to set the desired frequency
contour for music or home cinema system.
3. Volume: This control allows the subwoofer level or loudness to be adjusted in
order that you can achieve a totally controlled balanced sound.
4. Frequency: This feature controls the upper frequency limit of the Radius
360/720.
5. Phase: The phase control is used to synchronise the output between the Radius
360/720 and main/satellite speakers. For most applications this should be set to 0
degrees.
6. Crossover/LFE Switch (R720 only): This switch allows the internal low pass
crossover to be enabled or by-passed. Under normal operating conditions (using a
stereo amplifier) the switch should be set to ‘crossover’. This allows the frequency
control to be adjusted. If an AV amp/receiver is being used, the switch should be
set to LFE. This enables the subwoofer’s crossover point to be determined by the
AV amp/receiver.
NOTE: In LFE mode, the frequency control will not work.
7. RCA Phono Input Connection: This method of connection is recommended
where a pre-amplifier or home theatre processor/ receiver is to be used.
8. RCA Phono Output Connection (R720 only): The line level output is provided
so that other subwoofers can be connected to the system in a ‘daisy chain’ type
connection. Thismay be necessary in very large rooms.
9. Amplifier Input: This facility provides the Radius 360/720 with connection
directly fromthe amplifier output terminals (speaker level).
10. Speaker Output: This provides output to satellite speakers via a built in high
pass filter.
11. The Mains Fuse: This should be replaced with one of identical specification.
Note: A spare fuse is provided within the fuse holder, located in the plastic holder
below the IEC mains input socket. If a fuse blows more than once, it is advisable to
have the subwoofer unit checked by an authorised serviceagent.
12. Mains Voltage Selector: This is factory set to your countries mains voltage
specification. Do not attempt to adjust this as this may lead to permanent damage
to the product and even the risk of fire.
©Monitor Audio 2005 Rev 2
11
Technical Specifications
driver. Hand treated
120v 60Hz
order
driver. Hand treated
Digital Class D
120v 60Hz
Radius 360
Frequency
Response
Dimensions
36.5 H (Inc
feet) x 22.5 W
x 34 D (Inc
Radius 720
Frequency
Response
Dimensions
45.5 H (Inc
feet) x 22.5 W
x 48 D (Inc
27 Hz –
180 Hz
External
(cm)
amp)
25 Hz –
180 Hz
External
(cm)
amp)
Phase control
0 - 180
degrees
High Pass
Filter (speaker
level output)
100Hz @
6dB/octave
Phase control
0 - 180
degrees
High Pass
Filter (speaker
level output)
100Hz @
6dB/octave
Frequency
Control
Variable
40 Hz - 180 Hz
Mains Power
input (switch
able)
110220-240v 50Hz
Frequency
Control
Variable
40 Hz - 180 Hz
nd
Active 2
12dB/Octave
two stage filter
Mains Power
input (switch
able)
110220-240v 50Hz
Bass
Alignment
Downward
Ported Bass
Reflex With
®
HiVe
Technology
Power Output
100W (RMS)
@ 4 Ohms
Bass
Alignment
Rear Ported
Bass Reflex
With HiVe
Technology
Power Output
Amplifier
250W (RMS)
@ 4Ohms
Drive Unit
Complement Bass
1x 8” Ultra long
throw sub bass
paper cone woofer
Weight Kg
(each)
Drive Unit
Complement Bass
2x 8” Ultra long
throw sub bass
®
paper cone woofer
Weight Kg
(each)
13.9
20.1
©Monitor Audio 2005 Rev 2
12
Fine-tuning
1. Connect the mains supply and switch on the Radius 360/720. Play the music/
movie at an average listening level; the Subwoofer should switch on automatically
(blue LED on front will illuminate)
2.The volume control can now be adjusted to a desirable level.
3. The frequency control can now be set to give a seamless sound balance. The
setting will depend on the low frequency response of the main/satellite speakers.
4. The volume may need to be fine-tuned to complete the installation process. It is
very important to try a variety of music/movies with which you are familiar in order
to obtain the optimum overall settings.
Troubleshooting
No sound from the subwoofer
Check that the power connection is made correctly.
Check to see if the power light is on.
Check the input connections to the subwoofer are correct.
If the amplifier input is in use, check the connections are phased correctly
(+ to + and- to -).
If the amplifier input is in use, check the speaker wires are connected at
the amplifier.
Excessive bass from subwoofer
Check the position of subwoofer - ensure that it is not too close to a
corner of the room
Re-check the set-up procedure
Inadequate bass from subwoofer
Re-check full set-up procedure
Vibrating noise from subwoofer
Check that this is not caused by items located on top of or close to the
Subwoofer, which may vibrate when subject to deep bass sounds
If problems persist contact your dealer for assistance.
©Monitor Audio 2005 Rev 2
13
System wiring configuration
AMPLIFIER
AMPLIFIER
AVRECEIVER/PROCESSOR
Output
270 can be connected
direct to your amplifier.
This final configuration to the left
shows how the Radius speakers
home cinema.
90’s,
to
your AV receiver/processor using
the speaker outputs and use the
woofer output on
the receiver/processor and
connect to the right input on the
When connecting your Radius
loudspeakers to an AV
er, please set the
amplifier up so that it
SpeakerOutput
This next illustration to
the right shows how the
high pass filter is used on
the Radius 360/720 subwoofer using high-level
speaker outputs.
SpeakerOutput
SpeakerOutput
The illustration to the left
shows how the Radius
90, 180, 225, 250 and
We do not recommend
using the Radius 45 with
a normal 2 channel
stereo system.
SpeakerOutput
Front Speaker
Output
Rear Speaker
Output
Sub-Wofer
Phono Output
Centre
Channel
can be used in
Connect the Radius 45’s,
180’s, 225’s, 250’s or 270’s
Front Speaker
Rear Speaker
Output
RCA phono sub-
Radius 360/720 sub-woofer.
©Monitor Audio 2005 Rev 2
14
amplifi
Ancillary Equipment
All Monitor Audio Radius loudspeakers present an easy, efficient load and are
compatible with most good quality amplifiers.
Implementation of the latest design and construction techniques offer equal
suitability to the demands of both current andfuture digital and analogue formats.
Monitor Audio’s power handling figures are based upon undistorted speech and
music signals.
All Monitor Audio loudspeakers are primarily intended for use in a
normal domestic environment. Provided you do not overdrive your amplifier or
make excessive use of bass or treble boosts, you should never damage either the
amplifier or loudspeakers.
High quality components are utilised to produce these loudspeakers ensuring
accurate reproduction of the signal fed to them, so it is important to appreciate that
the ancillary equipment used will profoundly affect performance.
If distortion is evident when the volume level is increased this is a sign of
overdriving and the volume level should be reduced immediately.
Used properly, loudspeakers will rarely fail and if both units reproduce the same
fault or distortion, then it is likely that the problem is elsewhere in the system. In
such instances please contact your dealer.
Guarantee and Service
Valid upon completion of the guarantee card and its return within 30 days of
purchase.
This equipment has been fully tested prior to dispatch from the factory. Both the
craftsmanship and the performance of this product is guaranteed against
manufacturing defects for the period of three years (one year for Radius 360/720)
from the date of purchase (see conditions below), provided that the product was
supplied by an authorised Monitor Audio retailer under the consumer sale
agreement.
(The words ‘consumer sale’ shall be construed in accordance with
Section 15 of the supply of goods act 1973).
Monitor Audio accepts no responsibility for defects arising from accident, misuse,
abuse, wear and tear, modification or operation outside of that specified within this
manual. Neither will responsibility be accepted for damage or loss occurring during
transit to or from the parties claiming under this guarantee.
This guarantee covers both labour and parts. The liability of Monitor Audio is
limited to the cost of repair or replacement of the defective parts (at the discretion
of Monitor Audio) and under no circumstances extends to consequential losses or
damage.
Service
The user should not attempt to service their Radius loudspeakers beyond that
specified in this manual. Qualified service personnel should carry out all other
servicing requirements.
©Monitor Audio 2005 Rev 2
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Claims under this Guarantee
The equipment should be returned in its packaging to the original supplier where
possible, or to any other authorised Monitor Audio dealer. If it is not possible to
return the equipment by hand, then it should be sent carriage prepaid via a
reputable carrier. If the original packing is not available replacement packaging can
be purchased from Monitor Audio. If you have any difficulties complying with these
requirements please contact us at the following address:
Monitor Audio Ltd.
Unit 2, 24 Brook Road
Rayleigh
Essex
SS6 7XL
England
Tel: 44 (0) 1268 740580
Fax: 44 (0) 1268 740589
Internet: www.monitoraudio.co.uk
Email: info@monitoraudio.co.uk
This guarantee does not affect the statutory rights of the consumer under UK law.
Monitor Audio reserve the right to alter specifications without notice if it is
considered that an improvement can bemade to the product.
©Monitor Audio 2005 Rev 2
16
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