Monitor Audio CS140 is a 2-way Passive In-wall In-wall speaker by Monitor Audio. It features a 1" Hard-Dome Tweeter and 1 x 4" Metal Matrix Polymer Woofer. The speaker has a frequency range of 75-30kHz and a sensitivity of 85 dB. Monitor Audio CS140 has an MSRP of 440$ per pair.
Room Size Suitability
The size of the room where you plan to use the Monitor Audio CS140 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 | Good |
| Small Room | Good |
| Mid-size Room | Average |
| Large Room | Poor |
| Very Large Room | No way |
(* 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.)
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Frequency Response of the Monitor Audio CS140 Speaker
Monitor Audio CS140 has a Frequency response range of 75-30kHz at ±3dB and Power Range of 10-50 watts. With a minimum frequency of 75 Hz, it is hard to expect a strong bass response from CS140 so depending on your use case, using a subwoofer will significantly help to widen the response range.
To focus on the subwoofers that are in a similar price range with Monitor Audio CS140, check out the Powered Subwoofers under $500. Alternatively, find the Full list of Powered Subwoofers regardless of the price.
Here we have a comparison of how CS140's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
Low Frequency
In-wall Speakers
High Frequency
In-wall Speakers
Impedance and Sensitivity
Monitor Audio CS140's nominal impedance level is
6 ohms and has a sensitivity of
85 dB.
Sensitivity
In-wall Speakers
Nominal Impedance of the 6 Ohms makes the Monitor Audio CS140 a relatively difficult to drive speaker compared to more frequently found 8 ohms speakers from nominal Impedance perspective.
Sensitivity
With a sensitivity level of only 85 dB, Monitor Audio CS140 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 CS140:
Input Type
CS140 features Spring post type connectors. Bi-amping and Bi-wiring are not possible.
Monitor Audio CS140 External Dimensions and Weight
Monitor Audio CS140 has external dimensions of (Height x Width x Depth) 5.8750-inch x 5.8750-inch x 3.9375-inch (150.0 x 150.0 x 101.0mm ).
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 CS140 is approximately 151.5cm2 / 23.5inch2.
Cabinet type and Materials
Monitor Audio CS140 has a
In-wall type cabinet.
What's in the Box of Monitor Audio CS140?
Here are the items that are included inside the box of CS140:
In-ceiling speakerGrillePaint skimInstallation GuideImportant Safety InstructionsCutout Template
Recommended Accessories
Here is a list of accessories that we think you may need for the Monitor Audio CS140.
Warranty
Lifetime of parts warranty and Lifetime of labor warranty is generally provided by the manufacturer.