Monitor Audio Platinum 100 3G is a 2-way Passive Bass Reflex Bookshelf speaker by Monitor Audio. It features a 1" Tweeter and 1 x 6" RDT III Woofer. The speaker has a frequency range of 28-60k Hz and a sensitivity of 85dB. Monitor Audio Platinum 100 3G has an MSRP of 6900$ per pair.
Room Size Suitability
The size of the room where you plan to use the Monitor Audio Platinum 100 3G is a crucial factor in your decision. We have assessed its suitability for various room sizes based on its dimensions and maximum power output:
| Listening Environment* |
Suitability |
| Near-field | Poor |
| Small Room | Average |
| Mid-size Room | Good |
| Large Room | Average |
| Very Large Room | Poor |
(* 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.)
Monitor Audio Platinum 100 3G Lifestyle
Monitor Audio's Platinum 3G Series of Loudspeakers
Platinum 100 3G is a member of Monitor Audio's Platinum 3G series of Passive speakers. Below you can see the main specs of these speakers.
Monitor Audio Platinum 3G Series Speakers
Monitor Audio Platinum 3G Series Speakers
**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.
Frequency Response of the Monitor Audio Platinum 100 3G Speaker
Monitor Audio Platinum 100 3G has a Frequency response range of 28-60k Hz at ±3dB and Power Range of up to 150 watts. With a minimum frequency of 28 Hz, Platinum 100 3G delivers deep bass that will likely satisfy most listeners, especially those who enjoy music. However, movie enthusiasts and music fans who prefer a full range of sound may still benefit from adding a subwoofer.
Visit our Powered Subwoofers section to find out more about the available subwoofer options.
Here we have a comparison of how Platinum 100 3G's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
Low Frequency
Bookshelf Speakers
Monitor Audio Platinum 100 3G
High Frequency
Bookshelf Speakers
Monitor Audio Platinum 100 3G
Monitor Audio Platinum 100 3G's RDT III Woofer
As you can see from the chart, Monitor Audio Platinum 100 3G with its 28 Hz features the lowest Low Frequency level among the Bookshelf speakers in our database, promising a very good bass range.
On the treble side, with its upper limit of 60 kHz, Monitor Audio Platinum 100 3G has the highest frequency level among the Bookshelf speakers in our database.
Monitor Audio Platinum 100 3G's MPD III Tweeter
Crossover frequency of the Monitor Audio Platinum 100 3G?
The Crossover frequency of the Platinum 100 3G is set to 2850 Hz. This is the threshold frequency where the higher frequency signals over this level are sent to the tweeter and the lower-frequency signals are sent to the woofer by the crossover component.
Impedance and Sensitivity
Monitor Audio Platinum 100 3G's nominal impedance level is
4 ohms but can go down to as low as
4 ohms, and has a sensitivity of
85dB.
Sensitivity
Bookshelf Speakers
Monitor Audio Platinum 100 3G
Nominal Impedance of the 4 Ohms means that the Monitor Audio Platinum 100 3G is a difficult to drive speaker from nominal Impedance perspective, make sure that you choose an amplifier than can provide 4 Ohms for this speaker.
Many AVRs (audio/video receiver) in the market may have difficulty when the speakers dip below the 4 Ohms levels (this may cause clipping or even physical damage), so we recommend to not pair the Monitor Audio Platinum 100 3G with an AVR but use an Integrated Amplifier instead.
Sensitivity
With a sensitivity level of only 85 dB, Monitor Audio Platinum 100 3G is a difficult to drive speaker from Sensitivity perspective, make sure to choose an amplifier with a high output if you like listening to your music at high volume levels. You may especially have a hard time using Tube amplifiers which are traditionally very low power compared to Class A/B or Class D amps.
Check the amplifiers that are in a similar price range to the Monitor Audio Platinum 100 3G:
Input Type
Platinum 100 3G has Binding post type connectors and lets bi-amping/bi-wiring. Bi-wiring can enhance the overall transparency of your loudspeakers by using separate speaker wires for the low and high-frequency drivers from a single amplifier. Bi-amping, on the other hand, involves using separate amplifiers for the high and low-frequency drivers, potentially resulting in a greater dynamic range and reduced distortion.
Monitor Audio Platinum 100 3G Back View
Monitor Audio Platinum 100 3G's Binding post terminals allows Bi-amping or bi-wiring
Monitor Audio Platinum 100 3G External Dimensions and Weight
Monitor Audio Platinum 100 3G has external dimensions of (Height x Width x Depth) 15.6 x 8.8 x 12.8-inch (398 x 225 x 325.6 mm ).
Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base area of Monitor Audio Platinum 100 3G is approximately 731.3cm2 / 113.4inch2.
To get a better perspective on the real life size of Monitor Audio Platinum 100 3G, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm).
Monitor Audio Platinum 100 3G Speaker Size Compared to a Compact Disc
Here we place the Monitor Audio Platinum 100 3G virtually next to a standard width amplifier and turntable on a BDI Octave Media Cabinet to get a better idea about the size.
Monitor Audio Platinum 100 3G Speaker next to an amplifier and turntable
WeightThe Monitor Audio Platinum 100 3G weighs 15.20kg / 33.4lbs per piece. Here is a comparison of how Platinum 100 3G's weight compares with the average, max and min weights in its class.
Weight
All Bookshelf Speakers
Monitor Audio Platinum 100 3G
Weight
Bookshelf Speakers under $10000
Monitor Audio Platinum 100 3G
Cabinet type and Materials
Monitor Audio Platinum 100 3G has a
Bass Reflex type cabinet. Bass Reflex type loudspeakers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs.
Port Position
Monitor Audio Platinum 100 3G is a rear-firing port speaker so you have to make sure you leave enough space between the back of the speaker and wall or bookshelf so that it has room to breathe.
Monitor Audio Platinum 100 3G Port
Available colors
Monitor Audio Platinum 100 3G is available in Piano Black, Piano Ebony and Satin White.
Wall Mounting
Platinum 100 3G doesn't sport any built-in mounting bracket, so you need an external structure to mount it on walls.
Recommended Accessories
Here is a list of accessories that we think you may need for the Monitor Audio Platinum 100 3G.
- Speaker Cable and Connectors
- Vibration Isolators: IsoAcoustics isolators more affordable options too.
- Acoustic Panels and Treatments: Your room is as important as your stereo equipment so acoustic treatments goes a long way in improving the overall performance.
- Speaker Stands: Stands bring your bookshelf speakers to ideal height (rule of thumb is to have the tweeter level with your ear in your listening position), helps stability and acoustical isolation.
User's Manual
For more information about how to setup, use and maintain the Monitor Audio Platinum 100 3G, use the direct link below to download the official manual document:
Download User Manual for Monitor Audio Platinum 100 3G
Official Brochure
Here is a link to download the official brochure for the Monitor Audio Platinum 100 3G speaker:
Official Brochure for Monitor Audio Platinum 100 3G
Official Product Page
Official manufacturer's product page for the Monitor Audio Platinum 100 3G speaker can be found below:
Official Product Page for Monitor Audio Platinum 100 3G
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.