Monitor Audio CS140 is a 2-way Passive In-wall In-wall speaker by Monitor Audio. It was released in 2017. 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.)
Frequency Response of the Monitor Audio CS140 Speaker
Monitor Audio CS140 has a Frequency response range of 75-30kHz 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.
Here we have a comparison of how CS140's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
In-wall Speakers
Thinking about a subwoofer for the Monitor Audio CS140?
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. Work out how loud the Monitor Audio CS140 plays in your room →
Running more than one pair from a single amplifier? Check the load it would present →
What amplifier does the Monitor Audio CS140 need?
At normal listening levels in a medium room, about
32–50 W
per channel into 6 ohms.
Set your own conditions and we will rank every amplifier we cover.
Prefer to browse? Integrated amplifiers under $500, or every amplifier we cover.
Input Type
CS140 features Spring post type connectors. Bi-amping and Bi-wiring are not possible.
Work out what gauge speaker cable this run needs →
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.
To get a better perspective on the real life size of Monitor Audio CS140, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm).
Monitor Audio CS140 Speaker Size Compared to a Compact Disc
Find speakers that fit your shelf or alcove →
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 speaker
- Grille
- Paint skim
- Installation Guide
- Important Safety Instructions
- Cutout 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.