In this review, we will be comparing CS140 and R-5800-W II, two Passive In-wall speakers from Monitor Audio and Klipsch.
Let's have a brief look at the main features
of Monitor Audio CS140 and Klipsch R-5800-W II first before getting into our more
detailed comparison.
| Key Specs | Monitor Audio CS140 | Klipsch R-5800-W II |
|---|
| Brand | Monitor Audio
United Kingdom · founded 1972 | Klipsch
United States · founded 1946 |
|---|
| Design | 2-way | 2-way |
|---|
| Tweeter | 1" Hard-Dome | 1" Horn-loaded dome |
|---|
| Woofer | 4" Metal Matrix Polymer | 8" Cerametallic |
|---|
| Frequency response | 75-30kHz | 40-23kHz |
|---|
| Sensitivity | 85 dB | 94 dB |
|---|
| Impedance | 6 ohms | 8 ohms |
|---|
| Power range | 10-50 watts | up to 50 watts |
|---|
| Weight | 1.18kg / 2.6lbs | 3.58kg / 7.9lbs |
|---|
| Dimensions (H x W x D) | 5.8750" x 5.8750" x 3.9375"
150.0 x 150.0 x 101.0mm | 14.6875" x 9.1250" x 3.9375"
374.0 x 232.0 x 101.0mm |
|---|
What size room are the Monitor Audio CS140 and Klipsch R-5800-W II 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 CS140 |
Klipsch R-5800-W II |
| Near-field |
Good |
Good |
| Small Room |
Good |
Good |
| Mid-size Room |
Average |
Average |
| Large Room |
Poor |
Poor |
| Very Large Room |
No way |
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.)
The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.
Drivers
Both CS140 and R-5800-W II are 2-way speakers.
Monitor Audio CS140Klipsch R-5800-W II
TweeterWoofer
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 CS140 |
Klipsch R-5800-W II |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 4-inch
|
1 x 8-inch
|
CS140 features a 1" Hard-Dome Tweeter and 1 x 4" Metal Matrix Polymer Woofer. On the other hand, the R-5800-W II features a 1" Horn-loaded dome Tweeter and 1 x 8" Cerametallic Woofer with a Crossover frequency at 2600 Hz.
Frequency Response
CS140 has a frequency range of 75-30kHz whereas R-5800-W II has a frequency range of 40-23kHz. With a minimum frequency of 40Hz, the R-5800-W II can go significantly deeper on the low side and provide stronger bass compared to the CS140's min frequency of 75Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the In-wall class in our database.
Low Frequency
In-wall 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
CS140 is a 6 ohms speaker compared to the R-5800-W II which has a nominal impedance of 8 ohms.
These two speakers also have different sensitivity levels. CS140 sensitivity is rated at 85 dB and the R-5800-W II's is rated at 94 dB. This 9 dB difference makes the Klipsch R-5800-W II a more sensitive speaker compared to Monitor Audio CS140, hence will play louder with the same amount of watts.
Sensitivity
In-wall 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 50 watts RMS, though CS140 is rated 10-50 watts and R-5800-W II up to 50 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.
Input Type and Bi-Amping / Bi-Wiring
CS140 features Spring post type posts and R-5800-W II has a Spring post type posts. None of these speakers feature bi-amping/bi-wiring.
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 CS140's and Klipsch R-5800-W II's external dimensions. Monitor Audio CS140 has external dimensions of 150.0 x 150.0 x 101.0mm (5.8750-inch x 5.8750-inch x 3.9375-inch) whereas Klipsch R-5800-W II has external dimensions of 374.0 x 232.0 x 101.0mm (14.6875-inch x 9.1250-inch x 3.9375-inch).
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 CS140 weighs 1.18kg / 2.6lbs and the Klipsch R-5800-W II weighs 3.58kg / 7.9lbs. This makes the R-5800-W II 203% heavier than the CS140.
Here is a comparison of how CS140 and R-5800-W II's weights compare with the average, max and min weights in Passive In-wall class.
Weight
All In-wall Speakers
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
What's in the Box of Klipsch R-5800-W II?
Here are the items that come with the R-5800-W II:
- In-wall speaker
- White metal mesh grille
- Cardboard template
- Owners Manual (En/Fr/Sp)
 High Frequency Response |
30k Hz
vs
23k Hz
|
Generates higher frequency |
 Base Surface Area |
151cm2
vs
234cm2
|
Takes less floor space |
 Price per pair* |
440USD
vs
978USD
|
costs less (*prices may change depending on the seller, location and time) |
 Sensitivity |
94 dB
vs
85 dB
|
Play louder with same amount of amplification power |
 Nominal Impedance |
8 ohms
vs
6 ohms
|
Less selective with amplifiers |
 Woofer Size |
8 inches
vs
4 inches
|
Larger woofer |
|
Low Frequency Response |
40 Hz
vs
75 Hz
|
Generates deeper bass |
| General |
Monitor Audio CS140 |
Klipsch R-5800-W II |
| Brand |
Monitor Audio |
Klipsch |
| Speaker Type |
Passive In-wall Speaker |
Passive In-wall Speaker |
| Power Range |
10-50 watts |
up to 50 watts |
| Sensitivity |
85 dB |
94 dB |
| Impedance |
6 ohms |
8 ohms |
| Frequency Response |
75-30kHz |
40-23kHz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
4" |
8" |
| Woofer Composition |
Metal Matrix Polymer |
Cerametallic |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Hard-Dome |
Horn-loaded dome |
| Aimable Tweeter |
Yes |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
n/a |
2600 Hz |
Physical Specs |
|
|
| Height |
374.0mm (14.7") |
374.0mm (14.7") |
| Width |
150.0mm (5.9") |
232.0mm (9.1") |
| Depth |
101.0mm (4") |
101.0mm (4") |
| Weight |
1.18kg (2.6lbs) |
3.58kg (7.9lbs) |
| Enclosure |
In-wall |
In-wall |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
No |
Other |
|
|
| Parts Warranty |
Lifetime |
Ltd. Lifetime |
| Labor Warranty |
Lifetime |
Ltd. Lifetime |
These sit in different price classes - Klipsch R-5800-W II costs roughly 2.2x what Monitor Audio CS140 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 | B | Klipsch R-5800-W II digs deeper - 40Hz against 75Hz. |
| Amplifier needs | B | Klipsch R-5800-W II is more sensitive (94dB vs 85dB), so it goes louder on the same amplifier. |
| Amplifier match | B | Klipsch R-5800-W II is the easier load at 8 ohms. |
| Headroom | evenly matched | Similar power handling (50W vs 50W). |
| Size | depends | Monitor Audio CS140 is easier to place; Klipsch R-5800-W II is bigger, which usually goes with fuller bass. Your room decides. |
| Price | A | Monitor Audio CS140 is cheaper - $440 against $978, about 55% less; arguably a different class. |
A Monitor Audio CS140 B Klipsch R-5800-W II
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?
The usual trade-off: Klipsch R-5800-W II measures better, Monitor Audio CS140 costs about about 122% more% less. Whether that gap is worth the money is the call only you can make - and in a normal room it is often smaller than the numbers suggest. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 75Hz anyway, which makes the cheaper Monitor Audio CS140 much easier to justify. In a large or open-plan room, Klipsch R-5800-W II has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, Monitor Audio CS140 is the easier speaker to get right.
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.