Monitor Audio Radius User manual

Owners Manual

Radius

180

225

Radius

250

270

Radius

380

Radius

390

Radius

series

Radius

series

Radius

Contents

Contents 1

Introduction 2

Set Up and Positioning 2

Radius One 2

Radius 200 2

Positioning - Front Speakers 3

Positioning - Surround Speakers 3

Optimum Speaker Placement 4

Fixing the Radius 225/ Radius One to a Wall 5

Radius 270 Feet and Spikes 6

Speciﬁcations 7

Owner Information 8

monitoraudio.com 1

Introduction

Congratulations and thank you for your purchase of the Radius Series loudspeakers.

We are conﬁdent they will provide years of enjoyment and pleasure as only high quality

components have been used throughout.

Please follow this user manual carefully as it contains important information about positioning

and set up procedures. For further advanced information please refer to our web site at:

www.monitoraudio.com

The Radius 45 incorporates a thermal protection device, which helps to protect

the drive unit and tweeter from permanent damage. If the speaker stops working

after a long period of play, turn off the source for about 10 minutes, and retry.

Set Up and Positioning

Although position and suitability will have been considered prior to purchasing these

loudspeakers, this section will guide optimum positioning and set up (an illustration is

provided on page 4 to assist with positioning). For instructions on ﬁtting the Radius 225 or

Radius One to a wall, please refer to page 5. The Radius One features ﬁxings compatible

with a Sanus Wall Bracket.

NOTE: The Radius 45 and 90 can be ﬁxed to a wall using our Universal Speaker Mount

sold seperately. The Radius 200 is not designed to be wall mounted.

Self adhesive rubber feet are provided to prevent movement due to vibration when using

the Radius Series loudspeakers on a table/ equipment stand. The Radius 270 comes

supplied with rubber feet ﬁtted into the plinth for use on hard ﬂoors. Further details on these

can be found on page 10.

Radius One

The Radius One can be placed either just below or just above your TV/ projector screen. It

can be wall mounted with the supplied bracket (refer to page 5), or alternatively using the

Sanus VMA202 Soundbar Speaker Mount. refer to www.sanus.com for further information.

Radius 200

The Radius 200 is the range’s ﬁrst dedicated centre speaker, and is designed to be placed

on a shelf or cabinet.

Radius Series

monitoraudio.com 3

Positioning - Front Speakers

The centre channel should be the ﬁrst speaker positioned in a home theatre room, and

such that the tweeter is directed towards the listener’s ear. The centre channel’s job is to

anchor dialogue and other on-screen sounds to the screen. Typically, as much as 60% of

a movie soundtrack comes through the centre channel.

The centre channel can be placed either above or below the TV screen, and as close as

possible. If positioned in a cabinet or sitting on top of the TV, ensure that the front edge

is aligned with the front edge of the TV or shelf. Where possible, the height of the centre

channels’ tweeter should be close to the height of the front speakers’ tweeter — ideally,

within about 600mm.

When placing Radius loudspeakers on the wall around a plasma/ LCD TV, the left and right

speakers need to be between 22 & 30° to the left and right of the seating position, with the

tweeters at approximate ear level.

Positioning - Surround Speakers

Ideally, the primary pair of surround speakers should be placed to the left and right of the

listening position — either in line with it, or just behind it (90 - 110°). If using a 6.1 or 7.1

channel system with more than two surround speakers, or if side placement isn’t available

in a 5.1 channel system, consider placement behind the listening position, facing the front

of the room (135 - 150°).

Surround speakers should be placed high enough so that the drivers do not ﬁre directly at

ear level when sitting down — one rule of thumb is to place them at ear level while standing,

to avoid overpowering the front speakers.

If the surrounds are mounted on brackets on the side walls, experiment with aiming them.

Surround speaker placement ideal for home theatre, may not necessarily be so for

multichannel music listening, where a precisely focused rear soundstage is best. If both

types of listening are important, position them as a compromise between the two.

Optimum Speaker Placement

Radius Series

22°

0°

30°

90°

110°

135°

150°

Centre

Left Right

Surround

Right

Surround

Left

Rear

Surround

Left

Rear

Surround

Right

Fixing the Radius 225/ Radius One to a Wall

Additional Points to Remember

• When using the wall ﬁxing plate, the speaker will drop by 7.5mm due to the key hole

ﬁxing.

• Templates are supplied with the products to aid ﬁxing.

• The Radius 225 grille badge can be rotated, simply by applying some pressure with

your thumb/ ﬁnger and turning.

• Please allow no more than 100mm (4 inches) of excess cable protruding from the wall.

Any excess cable can be coiled inside of the terminal panel.

• Please see the template for suggested rubber foot placement.

monitoraudio.com 5

Cable Through

Hole

Wall Mounting

Point

Wall Mounting

Point

Radius 270 Feet and Spikes

The Radius 270 is supplied pre-installed with rubber feet for use on hard ﬂoors, or when

spikes are inappropriate.

If using spikes, ﬁrst remove the

rubber feet by simultaneously

twisting and pulling them out,

revealing the threaded inserts.

Take the spikes and twist

them in a clockwise direction

in to the plinths. Ensure they

are fully inserted, stand the

cabinet up and place it in it’s

ﬁnal location. To level, adjust

the spikes accordingly,

before ﬁnally tightening the

knurled locking nut to hold

the spikes in that position.

Radius Series

Speciﬁcations

Model Radius 45 Radius 90 Radius 200 Radius 225 Radius 270 Radius One

Frequency Response 120Hz – 20 KHz 80Hz – 35 KHz 60 Hz – 35 KHz 80Hz – 35KHz 50Hz – 35KHz 90Hz – 35KHz

Sensitivity (1W@1M) 87dB 83dB 86dB 87dB 87dB 87dB

Nominal Impedance 8 Ohms 8 Ohms 6 Ohms 6 Ohms 6 Ohm 6 Ohms

Power Handling

Single (RMS) 25W 75W 100W 100W 100W 75W

System Power

Handling (RMS) 50W 100W 100W 150W 150W 100W

Recommended Amp

Requirements 15-50 W 30-100 W 40-150W 40-150W 40-150W 30-100W

Maximum SPL (dBA) 101 105 105 108 108 108

Bass Alignment Sealed Cabinet Bass reflex –rear

ported

Bass reflex – rear

ported

Bass reflex – front

ported

Bass reflex – front &

rear ported

C: Bass reflex – front

ported

L/R: Bass reflex –

ported to sides

Drive Unit

Complement

1 x 3” MMP2 cone

mid-bass driver.

1 x 20mm C-CAM

gold dome tweeter

1 x 4” C-CAM cone

bass/ mid driver.

1 x 25mm C-CAM

gold dome tweeter

2 x 4” C-CAM cone

bass/ mid driver.

1 x 25mm C-CAM

gold dome tweeter

2 x 4” C-CAM cone

bass/ mid driver.

1 x 25mm C-CAM

gold dome tweeter

2 x 4” C-CAM cone

bass/ mid driver

1 x 25mm C-CAM

gold dome tweeter

3 x 4” C-CAM cone

bass/ mid driver.

3 x 25mm C-CAM

gold dome tweeter

Cabinet Dimensions

(H x W x D).

100 x 100 x 100mm

(3 15/16 x 3 15/16 x

3 15/16")

198 x 125 x 140mm

(7 13/16 x 4 15/16 x 5 1/2")

125 x 330 x 140mm

(4 15/16 x 13 x 5 1/2")

610 x 140 x 67mm

(24 x 5 1/2 x 2 5/8")

1000 x 177 x 208mm

(39 3/8 x 6 15/16 x 8 3/16")

(Inc plinth without spikes)

175 x 980 x 67mm

(6 7/8 x 38 9/16 x 2 5/8")

External Dimensions

Inc Grille and

Terminals. (H x W x D).

100 x 100 x 124mm

(3 15/16 x 3 15/16 x 4 7/8")

198 x 125 x 165mm

(7 13/16 x 4 15/16 x 6 1/2")

125 x 330 x 164mm

(4 15/16 x 13 x 6 7/16")

610 x 140 x 77mm

(24 x 5 1/2 x 3 1/16")

1025 x 177 x 208mm

(40 3/8 x 6 15/16 x 8 3/16")

(Inc plinth with spikes)

175 x 980 x 79mm

(6 7/8 x 38 9/16 x 3 1/8")

External Dimensions

Inc Grille Bracket.

(H x W x D).

100 x 100 x 162mm

(3 15/16 x 3 15/16 x 6 3/8")

198 x 125 x 203mm

(7 13/16 x 4 15/16 x 8") N/A 610 x 140 x 84mm

(24 x 5 1/2 x 3 5/16") N/A 175 x 980 x 84mm

(6 7/8 x 38 9/16 x 3 5/16")

Weight (each)

Kg ( Ib) 1Kg (2lb 4oz) 2.1Kg (4lb 10oz) 3.6Kg (7lb 14oz) 4.2Kg (9lb 4oz) 9.9Kg (21lb 12oz) 7.4Kg (16lb 4oz)

Owner Information

Product Details

Model .................................................................

Product Serial No ................................................

Date of Purchase ................................................

Dealer Details

Dealer Name .....................................................................................................................

Address .............................................................................................................................

...........................................................................................................................................

e-mail address ...................................................................................................................

Monitor Audio reserves the right to alter speciﬁcations without notice.

Radius Series

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