Monitor Audio Radius 90 is a 2-way Passive Bookshelf speaker by Monitor Audio. It was released in 2016. It features a 1" Hard-Dome Tweeter and 1 x 4" Woofer. The speaker has a frequency range of 80-35k Hz and a sensitivity of 83 dB.
Monitor Audio's Radius Series of Loudspeakers
Radius 90 is a member of Monitor Audio's Radius series of Passive speakers. The Radius range are Monitor Audio's compact satellite and subwoofer speakers for discreet systems. Below you can see the main specs of these speakers.
Monitor Audio Radius Series Speakers
Frequency Response of the Monitor Audio Radius 90 Speaker
Monitor Audio Radius 90 has a Frequency response range of 80-35k Hz. With a minimum frequency of 80 Hz, it is hard to expect a strong bass response from Radius 90 so depending on your use case, using a subwoofer will significantly help to widen the response range.
Here we have a comparison of how Radius 90's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Bookshelf Speakers
Thinking about a subwoofer for the Monitor Audio Radius 90?
Impedance and Sensitivity
Monitor Audio Radius 90's nominal impedance level is
8 ohms and has a sensitivity of
83 dB.
Sensitivity
Bookshelf Speakers
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Monitor Audio Radius 90 is not considered a difficult to drive speaker from nominal Impedance perspective.
Sensitivity
With a sensitivity level of only 83 dB, Monitor Audio Radius 90 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. Work out how loud the Monitor Audio Radius 90 plays in your room →
What amplifier does the Monitor Audio Radius 90 need?
At normal listening levels in a medium room, about
38–595 W
per channel into 8 ohms.
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Input Type
Radius 90 features 5-Way post type connectors.
Work out what gauge speaker cable this run needs →
Monitor Audio Radius 90 External Dimensions and Weight
Monitor Audio Radius 90 has external dimensions of (Height x Width x Depth) (198.4 x 123.8 x 166.7mm ).
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 Radius 90 is approximately 206.4cm2 / 32.0inch2.
Find speakers that fit your shelf or alcove → · Work out where they should sit in the room →
WeightThe Monitor Audio Radius 90 weighs 2.09kg / 4.6lbs per piece. Here is a comparison of how Radius 90's weight compares with the average, max and min weights in its class.
Weight
All Bookshelf Speakers
Available colors
Monitor Audio Radius 90 is available in White.
Wall Mounting
Radius 90 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 Radius 90.
- Speaker Cable and Connectors
- Vibration Isolators: IsoAcoustics isolators are our favorite isolators but you may find 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.
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.