Revel M8 SP2 vs Revel Concerta2 C25 Comparison

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Revel M8 SP2

Passive On-wall | 110-21k Hz

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Revel Concerta2 C25

Passive Center Channel | 80Hz- 20kHz

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Revel M8 SP2

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Revel Concerta2 C25

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Revel M8 SP2

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Revel Concerta2 C25

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Revel M8 SP2 vs Revel Concerta2 C25 Speaker Comparison

In this review, we will be comparing two different types of speakers by Revel. Revel Concerta M8 SP2 is a On-wall speaker whereas the Concerta2 C25 is a Center Channel speaker.

Let's have a brief look at the main features of Revel M8 SP2 and Revel Concerta2 C25 first before getting into our more detailed comparison.

Key Specs	Revel M8 SP2	Revel Concerta2 C25
Brand	Revel United States · founded 1996	Revel United States · founded 1996
Design	2-way	2-way
Tweeter	1" Hard-Dome	1" dome with proprietary acoustic lens and waveguide
Woofer	2 x 3" Micro Ceramic Composite	2 x 5.25" anodized aluminum cone
Frequency response	110-21k Hz	80Hz- 20kHz
Sensitivity	88 dB	89 dB
Impedance	8 ohms	6 ohms
Power range	10-125 watts	40-120 watts
Weight	1.57kg / 3.5lbs	9.09kg / 20lbs
Dimensions (H x W x D)	11-11/16" x 4-1/4" x 4-5/8" 297.0 x 108.0 x 118.0mm	7-3/8" x 19-1/2" x 10-3/16" 188.0 x 496.0 x 259.0mm

M8 SP2 and Concerta2 C25 are members of Revel's Concerta series of speakers. Below you can find the loudspeakers from this series.

Revel Concerta Series History

Model	Body	Frequency	Sensitivity	Impedance	Woofer
Revel Concerta2 F35	Floor-standing	55- Hz	90 dB	6Ω	2 x 5.25"
Revel M16	Bookshelf	55- Hz	86 dB	6Ω	1 x 6.5"
Revel Concerta2 F36	Floor-standing	51- Hz	91 dB	6Ω	2 x 6.5"
Revel M8 SP2	On-wall	110-21k Hz	88 dB	8Ω	2 x 3"
Revel Concerta2 C25	Center Channel	80Hz- 20kHz	89 dB	6Ω	2 x 5.25"

The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.

Drivers

Both M8 SP2 and Concerta2 C25 are 2-way speakers.

Revel M8 SP2

Revel Concerta2 C25

TweeterWoofer

Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.

Driver	Revel M8 SP2	Revel Concerta2 C25
Driver Setup	2-way	2-way
Tweeter	1-inch	1-inch
Midrange	-	-
Woofer	2 x 3-inch	2 x 5.25-inch

M8 SP2 features a 1" MCC (Micro Ceramic Composite) Hard-Dome Tweeter and 2 x 3" Micro Ceramic Composite Woofer. On the other hand, the Concerta2 C25 features a 1" aluminum dome with proprietary acoustic lens and waveguide Tweeter and 2 x 5.25" anodized aluminum cone Woofer.

Frequency Response

M8 SP2 has a frequency range of 110-21k Hz whereas Concerta2 C25 has a frequency range of 80Hz- 20kHz. With a minimum frequency of 80Hz, the Concerta2 C25 can go significantly deeper on the low side and provide stronger bass compared to the M8 SP2's min frequency of 110Hz.

The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the On-wall class in our database.

Low Frequency

On-wall Speakers

M8 SP2

Concerta2 C25

Min

Average

Median

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

M8 SP2 is a 8 ohms speaker compared to the Concerta2 C25 which has a nominal impedance of 6 ohms.

These two speakers also have different sensitivity levels. M8 SP2 sensitivity is rated at 88 dB and the Concerta2 C25's is rated at 89 dB. This 1 dB difference makes the Revel Concerta2 C25 a more sensitive speaker compared to Revel M8 SP2, hence will play louder with the same amount of watts.

Sensitivity

On-wall Speakers

M8 SP2

Concerta2 C25

Min

Average

Median

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.

M8 SP2 can handle a max power of 125 watts RMS, whereas Concerta2 C25 has a max power handling value of 120 watts RMS, 5 watts less than the M8 SP2.

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.

Amplifier - change this

Distance

Playing as

Revel M8 SP2

Revel Concerta2 C25

Input Type and Bi-Amping / Bi-Wiring

M8 SP2 features 5-Way post type posts and Concerta2 C25 has a 5-Way post type posts. None of these speakers feature bi-amping/bi-wiring.

Revel Concerta2 C25's 5-Way post terminals

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 Revel M8 SP2's and Revel Concerta2 C25's external dimensions. Revel M8 SP2 has external dimensions of 297.0 x 108.0 x 118.0mm (11-11/16 x 4-1/4 x 4-5/8inch) whereas Revel Concerta2 C25 has external dimensions of 188.0 x 496.0 x 259.0mm (7-3/8 x 19-1/2 x 10-3/16inch).

Revel M8 SP2 is 388mm narrower and 141mm less deeper than Revel Concerta2 C25 but it is also 109mm taller.

Size, drawn to scale

Both speakers and both views share one scale, so everything here is directly comparable. Hover a box for its dimensions.

One scale for both, standing on the same surface and pushed back to the same wall, so the deeper one visibly sticks out further.

Revel Concerta2 C25 needs about 908% more floor or shelf area. Revel Concerta2 C25 is 141mm deeper, so it stands that much further out from the wall. Revel M8 SP2 is 109mm taller.

Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited. The base surface area of the Revel M8 SP2 is approximately 127.4cm² / 19.7inch² and base area of the Revel Concerta2 C25 is approximately 1284.6cm² / 199.1inch². The M8 SP2 requires 90% less surface area than the Concerta2 C25 which gives it a small advantage on placement in tight spaces.

What's in the Box of Revel M8 SP2?

Here are the items that are included inside the box of M8 SP2:

2 Satellite loudspeakers
2 Wall-brackets
4 Wall-mount end-caps
2 Rubber foot pads
Hex-key
Owners Manual

What's in the Box of Revel Concerta2 C25?

Here are the items that come with the Concerta2 C25:

Center-channel loudspeaker
Grille
2 Short feet
2 Long feet
Owners Manual

Reasons to choose Revel Concerta M8 SP2 over Revel Concerta2 C25

Max Input Power	125 watts vs 120 watts	Handle more power from your amplifier
Nominal Impedance	8 ohms vs 6 ohms	Less selective with amplifiers
High Frequency Response	21k Hz vs 20k Hz	Generates higher frequency
Mounting Bracket	Yes vs No	Allows mounting on walls
Base Surface Area	127cm² vs 1284cm²	Takes less floor space
Price per pair*	600USD vs 825USD	costs less (*prices may change depending on the seller, location and time)

Reasons to choose Revel Concerta2 C25 over Revel Concerta M8 SP2

Sensitivity	89 dB vs 88 dB	Play louder with same amount of amplification power
Woofer Size	5.25 inches vs 3 inches	Larger woofer
Low Frequency Response	80 Hz vs 110 Hz	Generates deeper bass
Height	188mm vs 297mm	Easier to fit in smaller spaces

Revel M8 SP2 vs Revel Concerta2 C25 Specs Table

Detailed comparison of specifications

General	Revel Concerta M8 SP2	Revel Concerta2 C25
Brand	Revel	Revel
Speaker Type	on-wall or tabletop speakers	Center channel speaker
Power Range	10-125 watts	40-120 watts
Sensitivity	88 dB	89 dB
Impedance	8 ohms	6 ohms
Frequency Response	110-21k Hz	80Hz- 20kHz
Drivers
Woofer Quantity	2	2
Woofer Size	3"	5.25"
Woofer Composition	Micro Ceramic Composite	anodized aluminum cone
Woofer Surround Material	Rubber	n/a
Tweeter Size	1"	1"
Tweeter Type	Hard-Dome	dome with proprietary acoustic lens and waveguide
Aimable Tweeter	No	No
Midrange Driver	No	No
Firing Direction	rear	n/a
Physical Specs
Height	297.0mm (11.7")	188.0mm (7.4")
Width	108.0mm (4.3")	496.0mm (19.5")
Depth	118.0mm (4.6")	259.0mm (10.2")
Weight	1.57kg (3.5lbs)	9.09kg (20lbs)
Enclosure	Bass Reflex	Passive Radiator
Finish	Aluminum	n/a
Available Colors	Gloss Black	Gloss Black
Recommended Stand Height	24-28"	n/a
Grille	Yes	Yes
Moisture Resistancy	No	No
Connections
Biamp Inputs	No	n/a
Other
Parts Warranty	5 Years	5 Years
Labor Warranty	5 Years	5 Years

Verdict

Siblings in Revel's Concerta series, so they share a family sound. It comes down to size, output and price.

Area	Better	Why
Bass	B	Revel Concerta2 C25 digs deeper - 80Hz against 110Hz.
Amplifier needs	evenly matched	Similar sensitivity (88dB vs 89dB) - both want much the same power.
Amplifier match	A	Revel M8 SP2 is the easier load at 8 ohms.
Headroom	evenly matched	Similar power handling (125W vs 120W).
Size	depends	Revel M8 SP2 is easier to place; Revel Concerta2 C25 is bigger, which usually goes with fuller bass. Your room decides.
Type	depends	A Passive On-wall against a Passive Center Channel - a different job rather than a better one.
Cabinet	depends	Ported vs Passive Radiator.
Price	A	Revel M8 SP2 is cheaper - $600 against $825, about 27% less.

A Revel M8 SP2 B Revel Concerta2 C25
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?

Neither runs away with it - they trade advantages. Let the "depends" rows and your own room settle it. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 110Hz anyway, which makes the cheaper Revel M8 SP2 much easier to justify. In a large or open-plan room, Revel Concerta2 C25 has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, Revel M8 SP2 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.