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Warranty

In the unlikely event that there is a defect with this product, it is covered by  

the Monitor Audio manufacturer’s warranty, provided that the product was  

supplied by an authorised Monitor Audio retailer.
 

For the period of cover please refer to the product page on our website 

at monitoraudio.com

Register your product at 

monitoraudio.com/registration

Specifications

Model

Platinum 100 3G

Platinum 200 3G

Platinum 300 3G

Platinum C250 3G

System Format

2-way

3-way

3-way

3-way

Frequency response 

(-6dB) Free-Field

37 Hz – >60 kHz

32 Hz – >60 kHz

25 Hz – >60 kHz

48 Hz – >60 kHz

Frequency response 

(-6dB) In room

28 Hz – >60 kHz

23 Hz – >60 kHz

17 Hz – >60 kHz

30 Hz – >60 kHz

Sensitivity 

(2.83v @ 1m) 

85 dB 

88 dB 

88 dB 

88 dB 

Nominal impedance

4 Ohms

4 Ohms

4 Ohms

4 Ohms

Minimum 

Impedance

4.0 Ohms  @ 180 Hz

4.0 Ohms  @ 2.5 kHz

4.0 Ohms  @ 3.75 kHz

4.0 Ohms  @ 150 Hz

Continuous Power 

Handling  

(RMS into 4 Ohms, 

Pink Noise with 6dB 

Crest Factor)

150 W

300 W

400 W

300 W

Recommended 

Amplifier Power

(RMS into 4 Ohm, 

Music Signal)

75-300 W

150-600 W

200-800 W

150-600 W

Bass Alignment

Ported

Ported

Ported

Sealed

Port Tuning 

Frequency

44 Hz 

38 Hz 

32 Hz 

N/A

Crossover 

Frequency

LF/HF: 2.85 kHz

LF/MF: 825 Hz

MF/HF: 3 kHz

LF/MF: 650 Hz

MF/HF: 3 kHz

LF/MF: 850 Hz

MF/HF: 3.5 kHz

Drive Unit 

Complement

1 x 6” RDT III  

bass driver
1 x MPD III tweeter 

2 x 6” RDT III  

bass driver 
1 x 4” RDT III  

mid-range driver
1 x MPD III tweeter 

2 x 8” RDT III  

bass driver
1 x 4” RDT III  

mid-range driver
1 x MPD III tweeter 

2 x 6” RDT III  

bass driver
1 x 2.5” RDT III  

mid-range driver
1 x MPD III tweeter

External Dimensions 

including Terminals 

(H x W x D)

398 x 225 x 326 mm
15

5/8

 x 8

13/16

 x 12

13/16

1025 x 369 x 455 mm
40

5/16

 x 14

1/2

 x 17

13/16

1115 x 430 x 524 mm
44

1/2

 x 16

7/8

 x 20

5/8

225 x 630 x 326 mm
8

13/16

 x 24

13/16

 x 12

13/16

External Dimensions 

including Outrigger 

Feet and Spikes  

(H x W x D)

N/A

1042 x 369 x 455 mm
41 x 14

1/2

 x 17

13/16

1131 x 430 x 524 mm
44

1/2

 x 16

7/8

 x 20

5/8

N/A

Weight (Each)

15.2 kg
33 lb 8 oz

35.8 kg
78 lb 14 oz

53.6 kg
118 lb 2 oz

25.4 kg
55 lb 15 oz

Finishes

Piano Ebony, Piano Black, Matte White

Summary of Contents for Platinum 100 3G

Page 1: ...Product Manual...

Page 2: ...for a lifetime of enjoyment If you need any further assistance please contact our technical team at monitoraudio com support Welcome to Platinum Series 3G Register your speakers using the QR code or v...

Page 3: ...rinted on the outer carton Lay the box down on the floor so the opening is on the side facing up Open the outer carton and then use the handles of the inner cardboard sleeve to lift the loudspeaker an...

Page 4: ...et that could be damaged by the spikes Levelling the speaker You can check that the loudspeaker is level on all sides by using a spirit level not supplied If it s slightly uneven remove the top cap he...

Page 5: ...size construction and personal tastes Experimentation is strongly advised when setting up the loudspeakers as environment and personal preference will differ with every installation If there is insuff...

Page 6: ...your surrounds in position A If the sound is too bass heavy or there is bass boom from the room when playing music without a subwoofer try moving the loudspeakers slightly further away from the wall...

Page 7: ...inum PLIC II loudspeakers These employ a unique midrange tweeter module which offers a wider dispersion characteristic and are ideal for Dolby Atmos duties Please see the diagram on the right for idea...

Page 8: ...s the bottom terminals connect to the bass driver s and the top terminals connect to the tweeter in 2 way loudspeakers or the mid and tweeter in 3 way loudspeakers NOTE When using this method you must...

Page 9: ...e loudspeaker in the room prior to fitting To optimise performance from the loudspeaker it is important to ensure the loudspeaker is not positioned too close to a wall or near the corners of a room If...

Page 10: ...ning product on an inconspicuous area on the cabinet and let it sit for several days before committing to its use on visible portions of the cabinet Retention Bolt adjustment The new Platinum Series h...

Page 11: ...W 300 W Recommended Amplifier Power RMS into 4 Ohm Music Signal 75 300 W 150 600 W 200 800 W 150 600 W Bass Alignment Ported Ported Ported Sealed Port Tuning Frequency 44 Hz 38 Hz 32 Hz N A Crossover...

Page 12: ...Rayleigh Essex SS6 7XJ England Tel 44 0 1268 740580 Email info monitoraudio group monitoraudio com Monitor Audio Ltd V1 2022 Platinum Series 3G Manual Dolby Dolby Atmos and the double D symbol are tr...

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