In this review, we will be comparing Platinum 200 3G and R11, two Passive Floor-standing speakers from Monitor Audio and KEF.
Let's have a brief look at the main features
of Monitor Audio Platinum 200 3G and KEF R11 first before getting into our more
detailed comparison.
| Key Specs | Monitor Audio Platinum 200 3G | KEF R11 |
|---|
| Brand | Monitor Audio
United Kingdom · founded 1972 | KEF
United Kingdom · founded 1961 |
|---|
| Design | 3-way | 3-way |
|---|
| Uni-Q driver | — | 12th Generation Uni-Q |
|---|
| Tweeter | 1" | 1" Dome |
|---|
| Midrange | 4" | 5" |
|---|
| Woofer | 6" RDT III | 4 x 6.5" Hybrid Aluminum |
|---|
| Frequency response | 23-60k Hz | 46-28k Hz |
|---|
| Sensitivity | 88dB | 90 dB |
|---|
| Impedance | 4 ohms | 8 ohms |
|---|
| Power range | up to 300 watts | 15-300 watts |
|---|
| Weight | 35.80kg / 78.8lbs | 37.70kg / 82.9lbs |
|---|
| Dimensions (H x W x D) | 41" x 14.5" x 17.8"
1041.0 x 368.0 x 455.0mm | 51-3/16" x 12-1/4" x 15-5/16"
1301.0 x 312.0 x 389.0mm |
|---|
What size room are the Monitor Audio Platinum 200 3G and KEF R11 speakers good for?
The size of the room in which you are planning to use these loudspeakers is an important decision
factor. Here we have compared their suitability to various sizes of environments considering their size
and max power parameters:
| Listening Environment* |
Monitor Audio Platinum 200 3G |
KEF R11 |
| Near-field |
Are you nuts? |
Bad |
| Small Room |
Poor |
Poor |
| Mid-size Room |
Average |
Average |
| Large Room |
Good |
Good |
| Very Large Room |
Good |
Average |
(* Approximate Room sizes: Small < 100sq. ft / 9 m2,
Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: >
400 sq. ft / 36 m2.
Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual
listening experience changes depending on floor height, room shape, surface materials, listening
position, speaker locations, etc.)
The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.
Drivers
Both Platinum 200 3G and R11 are 3-way speakers.
Monitor Audio Platinum 200 3GKEF R11
TweeterMidrangeWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
Monitor Audio Platinum 200 3G |
KEF R11 |
|
Driver Setup
|
3-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
1 x 4-inch |
1 x 5-inch |
|
Woofer
|
1 x 6-inch
|
4 x 6.5-inch
|
Platinum 200 3G features a 1" MPD III Tweeter, a 4" Midrange and 1 x 6" RDT III Woofer with a Crossover frequency at 825 Hz - 3000Hz. On the other hand, the R11 features a 1" aluminum Dome Tweeter, a 5" Midrange and 4 x 6.5" Hybrid Aluminum Woofer with a Crossover frequency at 400Hz and 2900Hz.
Frequency Response
Platinum 200 3G has a frequency range of 23-60k Hz whereas R11 has a frequency range of 46-28k Hz. With a minimum frequency of 23Hz, the Platinum 200 3G can go significantly deeper on the low side and provide stronger bass compared to the R11's min frequency of 46Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Floor-standing class in our database.
Low Frequency
Floor-standing Speakers
Neither pair reaches down to 20Hz, the usual definition of full-range, which is normal for speakers of this size. If you want the bottom octave for movies or bass-heavy music, add a subwoofer to whichever you choose. Visit our Powered Subwoofers section to find out more about the available options.
Impedance and Sensitivity
Platinum 200 3G is a 4 ohms speaker compared to the R11 which has a nominal impedance of 8 ohms. Lower impedance speakers, especially the ones that are rated at 4 ohms may put more pressure on the amplifier unit especially when played at high volume levels, so make sure the amp you pair with the Platinum 200 3G can provide this impedance level.
These two speakers also have different sensitivity levels. Platinum 200 3G sensitivity is rated at 88dB and the R11's is rated at 90 dB. This 2 dB difference makes the KEF R11 a more sensitive speaker compared to Monitor Audio Platinum 200 3G, hence will play louder with the same amount of watts.
Sensitivity
Floor-standing Speakers
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. Staying
within that range gives nominal performance; driving the speaker beyond its maximum wattage can damage it.
Both handle the same maximum of 300 watts RMS, though Platinum 200 3G is rated up to 300 watts and R11 15-300 watts.
Note that higher power handling does not make a speaker louder: that depends mainly on
sensitivity and impedance. The calculator below shows how loud each of these actually plays
on a real amplifier.
Which plays louder on your amplifier?
Starting with a popular amplifier - change it to the one you own, or any you are
considering, and watch both numbers move.
Monitor Audio Platinum 200 3G
Input Type and Bi-Amping / Bi-Wiring
Both Platinum 200 3G and R11 features dual binding post speaker terminals for bi-amping or bi-wiring.
Monitor Audio Platinum 200 3G's Binding post terminals allows Bi-amping or bi-wiring
KEF R11's Binding post terminals allows Bi-amping or bi-wiring
Cabinet Type and Port Position
Both Platinum 200 3G and R11 have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.
If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.
Monitor Audio Platinum 200 3G Port
Physical Specs
The size of a speaker can sometimes be an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare Monitor Audio Platinum 200 3G's and KEF R11's external dimensions. Monitor Audio Platinum 200 3G has external dimensions of 1041.0 x 368.0 x 455.0mm (41 x 14.5 x 17.8-inch) whereas KEF R11 has external dimensions of 1301.0 x 312.0 x 389.0mm (51-3/16 x 12-1/4 x 15-5/16inch).
KEF R11 is 56mm narrower and 66mm less deeper than Monitor Audio Platinum 200 3G but it is also 260mm taller.
Below you can see the front view size comparison of Monitor Audio Platinum 200 3G and KEF R11 in scale.
Comparison image of Monitor Audio Platinum 200 3G and KEF R11 Size and External Dimensions
Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base surface area of the Monitor Audio Platinum 200 3G is approximately 1674.4cm2 / 259.5inch2 and base area of the KEF R11 is approximately 1213.7cm2 / 188.1inch2. The Platinum 200 3G requires 38% more surface area than the R11 which gives it a small disadvantage on placement in tight spaces.
Weight Comparison The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The Monitor Audio Platinum 200 3G weighs 35.80kg / 78.8lbs and the KEF R11 weighs 37.70kg / 82.9lbs. This makes the R11 5% heavier than the Platinum 200 3G.
Here is a comparison of how Platinum 200 3G and R11's weights compare with the average, max and min weights in Passive Floor-standing class.
Weight
All Floor-standing Speakers
Monitor Audio Platinum 200 3G
What's in the Box of KEF R11?
Here are the items that come with the R11:
- Floorstanding loudspeaker
- Grille
- 2 Foam port plugs
- 4 Outrigger feet
- 4 Spikes
- 4 Protective discs
- 4 Screws
- 4 Washers
- Wrench
- Hex-key
- User Manual
- Warranty Information
 Minimum Impedance |
4 ohms
vs
3.2 ohms
|
Very low impedance levels puts more pressure on amplifier |
 Low Frequency Response |
23 Hz
vs
46 Hz
|
Generates deeper bass |
 High Frequency Response |
60k Hz
vs
28k Hz
|
Generates higher frequency |
 Height |
1041mm
vs
1301mm
|
Easier to fit in smaller spaces |
 Sensitivity |
90 dB
vs
88 dB
|
Play louder with same amount of amplification power |
 Nominal Impedance |
8 ohms
vs
4 ohms
|
Less selective with amplifiers |
|
Woofer Size |
6.5 inches
vs
6 inches
|
Larger woofer |
|
Number of Woofers |
4
vs
1
|
More woofers |
 Base Surface Area |
1213cm2
vs
1674cm2
|
Takes less floor space |
 Price per pair* |
6000USD
vs
13900USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Monitor Audio Platinum 200 3G |
KEF R11 |
| Brand |
Monitor Audio |
KEF |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
up to 300 watts |
15-300 watts |
| Sensitivity |
88dB |
90 dB |
| Impedance |
4 ohms |
8 ohms |
| Impedance |
4 ohms |
3.2 ohms |
| Frequency Response |
23-60k Hz |
46-28k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
4 |
| Woofer Size |
6" |
6.5" |
| Woofer Composition |
RDT III |
Hybrid Aluminum |
| Woofer Surround Material |
n/a |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
n/a |
Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
4" |
5" |
| Crossover Frequency |
825 Hz - 3000Hz |
400Hz and 2900Hz |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
1041.0mm (41") |
1301.0mm (51.2") |
| Width |
368.0mm (14.5") |
312.0mm (12.3") |
| Depth |
455.0mm (17.9") |
389.0mm (15.3") |
| Weight |
35.80kg (78.8lbs) |
37.70kg (82.9lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
n/a |
MDF/Lacquer |
| Available Colors |
Piano Black, Piano Ebony, Satin White |
Black Gloss, White Gloss, Walnut |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
Yes |
Yes |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |
These sit in different price classes - Monitor Audio Platinum 200 3G costs roughly 2.3x what KEF R11 does. Expect it to lead on paper; the question is whether the gap is audible enough in your room to be worth it.
| Area | Better | Why |
|---|
| Bass | A | Monitor Audio Platinum 200 3G digs deeper - 23Hz against 46Hz. |
| Amplifier needs | B | KEF R11 is more sensitive (90dB vs 88dB), so it goes louder on the same amplifier. |
| Amplifier match | B | KEF R11 is the easier load at 8 ohms; the other is 4 ohms and wants an amplifier rated for it. |
| Headroom | evenly matched | Similar power handling (300W vs 300W). |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Expandability | depends | Monitor Audio Platinum 200 3G: bi-amping; KEF R11: bi-amping. |
| Price | B | KEF R11 is cheaper - $6,000 against $13,900, about 57% less; arguably a different class. |
A Monitor Audio Platinum 200 3G B KEF R11
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both speakers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
KEF R11 has the edge on paper, though the margin is not large. The rows marked "depends" may matter more to you than the score does. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 46Hz anyway, which makes the cheaper KEF R11 much easier to justify. Match it to your room: we rate Monitor Audio Platinum 200 3G the better fit for a very large room; elsewhere the two are rated the same.
And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.