In this review, we will be comparing Motion B10 and 607 S2 AE, two Passive Bookshelf speakers from MartinLogan and Bowers Wilkins.
Let's have a brief look at the main features
of MartinLogan Motion B10 and B&W 607 S2 first before getting into our more
detailed comparison.
| Key Specs | MartinLogan Motion B10 | B&W 607 S2 |
|---|
| Brand | MartinLogan
United States · founded 1982 | Bowers Wilkins
United Kingdom · founded 1966 |
|---|
| Design | 2-way | 2-way |
|---|
| Tweeter | 1.0 x 1.4" Folded Motion Ribbon | 1" Decoupled Double Dome |
|---|
| Woofer | 5.25" Woven Fiberglass | 5" Continuum |
|---|
| Frequency response | 56-25k Hz | 52-28k Hz |
|---|
| Sensitivity | 92 dB | 84 dB |
|---|
| Impedance | 5 ohms | 8 ohms |
|---|
| Power range | 20-200 watts | 30-100 watts |
|---|
| Weight | 6.60kg / 14.5lbs | 4.70kg / 10.3lbs |
|---|
| Dimensions (H x W x D) | 12-1/2" x 7" x 9-3/4"
318 x 178 x 248mm | 11-13/16" x 6-1/2" x 9-1/8"
301.0 x 166.0 x 232.0mm |
|---|
What size room are the MartinLogan Motion B10 and B&W 607 S2 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* |
MartinLogan Motion B10 |
B&W 607 S2 |
| Near-field |
Poor |
Average |
| Small Room |
Average |
Good |
| Mid-size Room |
Good |
Average |
| Large Room |
Average |
Poor |
| Very Large Room |
Poor |
Bad |
(* 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 Motion B10 and 607 S2 AE are 2-way speakers.
MartinLogan Motion B10B&W 607 S2
TweeterWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
MartinLogan Motion B10 |
B&W 607 S2 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1.0 x 1.4-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5.25-inch
|
1 x 5-inch
|
Motion B10 features a 1.0 x 1.4" Folded Motion Ribbon Tweeter and 1 x 5.25" Woven Fiberglass Woofer with a Crossover frequency at 2370Hz. On the other hand, the 607 S2 AE features a 1" Aluminum Decoupled Double Dome Tweeter and 1 x 5" Continuum Woofer.
Frequency Response
Motion B10 has a frequency range of 56-25k Hz whereas 607 S2 AE has a frequency range of 52-28k Hz. With a minimum frequency of 52Hz, the 607 S2 AE can go slightly deeper then the Motion B10's min frequency of 56Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Bookshelf class in our database.
Low Frequency
Bookshelf 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
Motion B10 is a 5 ohms speaker compared to the 607 S2 AE which has a nominal impedance of 8 ohms.
These two speakers also have different sensitivity levels. Motion B10 sensitivity is rated at 92 dB and the 607 S2 AE's is rated at 84 dB. This 8 dB difference makes the MartinLogan Motion B10 a more sensitive speaker compared to B&W 607 S2, hence will play louder with the same amount of watts.
Sensitivity
Bookshelf 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.
Motion B10 can handle a max power of 200 watts RMS, whereas 607 S2 AE has a max power handling value of 100 watts RMS, 100 watts less than the Motion B10.
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
607 S2 AE features Binding post posts which make bi-amping or bi-wiring possible. Motion B10 has a Custom 5-way binding posts which doesn't feature bi-amping/bi-wiring.
MartinLogan Motion B10's Custom 5-way binding posts terminals
B&W 607 S2's Binding post terminals allows Bi-amping or bi-wiring
Cabinet Type and Port Position
Both Motion B10 and 607 S2 AE have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.
If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.
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 MartinLogan Motion B10's and B&W 607 S2's external dimensions. MartinLogan Motion B10 has external dimensions of 318 x 178 x 248mm (12-1/2inch x 7inch x 9-3/4inch) whereas B&W 607 S2 has external dimensions of 301.0 x 166.0 x 232.0mm (11-13/16 x 6-1/2 x 9-1/8inch).
MartinLogan Motion B10 is clearly the larger of the two speakers. Its body is 12mm wider, 17mm taller and 16mm deeper than B&W 607 S2.
Below you can see the front view size comparison of MartinLogan Motion B10 and B&W 607 S2 in scale.
Comparison image of MartinLogan Motion B10 and B&W 607 S2 Size and External Dimensions
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 MartinLogan Motion B10 is approximately 441.4cm2 / 68.4inch2 and base area of the B&W 607 S2 is approximately 385.1cm2 / 59.7inch2. The Motion B10 requires 15% more surface area than the 607 S2 AE which gives it a small disadvantage on placement in tight spaces.
Here is another comparison that shows both speakers on a BDI Octave Media Cabinet, next to a standard size amplifier and turntable in scale:
Size Comparison image of MartinLogan Motion B10 and B&W 607 S2 on a Media Console
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 MartinLogan Motion B10 weighs 6.60kg / 14.5lbs and the B&W 607 S2 weighs 4.70kg / 10.3lbs. This makes the Motion B10 40% heavier than the 607 S2 AE.
Here is a comparison of how Motion B10 and 607 S2 AE's weights compare with the average, max and min weights in Passive Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of B&W 607 S2?
Here are the items that come with the 607 S2 AE:
- 2 Bookshelf loudspeakers
- 2 Grilles
- 2 Two-piece foam port plugs
- 8 Self-adhesive rubber feet
- 4 Jumper-straps (pre-installed)
- Manual
- Bowers & Wilkins brochure
- Warranty Information
 Max Input Power |
200 watts
vs
100 watts
|
Handle more power from your amplifier |
 Sensitivity |
92 dB
vs
84 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
5.25 inches
vs
5 inches
|
Larger woofer |
 Nominal Impedance |
8 ohms
vs
5 ohms
|
Less selective with amplifiers |
|
Low Frequency Response |
52 Hz
vs
56 Hz
|
Generates deeper bass |
 High Frequency Response |
28k Hz
vs
25k Hz
|
Generates higher frequency |
 Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
 Height |
301mm
vs
318mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
385cm2
vs
441cm2
|
Takes less floor space |
 Price per pair* |
799USD
vs
1198USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
MartinLogan Motion® B10 |
Bowers & Wilkins 607 S2 Anniversary Edition |
| Brand |
MartinLogan |
Bowers Wilkins |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
20-200 watts |
30-100 watts |
| Sensitivity |
92 dB |
84 dB |
| Impedance |
5 ohms |
8 ohms |
| Impedance |
n/a |
3.0 ohms |
| Frequency Response |
56-25k Hz |
52-28k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5.25" |
5" |
| Woofer Composition |
Woven Fiberglass |
Continuum |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1.0 x 1.4" |
1" |
| Tweeter Type |
Folded Motion Ribbon |
Decoupled Double Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
2370Hz |
n/a |
| Firing Direction |
rear |
rear |
| Suggested Break-in Period |
Allow 72 hours of break-in |
n/a |
Physical Specs |
|
|
| Height |
318.0mm (12.5") |
301.0mm (11.9") |
| Width |
178.0mm (7") |
166.0mm (6.5") |
| Depth |
248.0mm (9.8") |
232.0mm (9.1") |
| Weight |
6.60kg (14.5lbs) |
4.70kg (10.3lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
n/a |
MDF/Vinyl |
| Available Colors |
Gloss Black, Walnut, and Satin White |
Matte Black, Matte White, Oak, Red Cherry |
| Mounting Bracket |
No |
No |
| Recommended Stand Height |
24-28" |
24-26" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
Yes |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |
No single best speaker here - they are built to different priorities, and the right one depends on your room, your amplifier and what you listen to.
| Area | Better | Why |
|---|
| Bass | B | B&W 607 S2 digs deeper - 52Hz against 56Hz. A subwoofer would even that out. |
| Amplifier needs | A | MartinLogan Motion B10 is more sensitive (92dB vs 84dB), so it goes louder on the same amplifier. |
| Amplifier match | B | B&W 607 S2 is the easier load at 8 ohms. |
| Headroom | A | MartinLogan Motion B10 takes more power (200W vs 100W) - more in hand in a big room. |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Expandability | B | B&W 607 S2: bi-amping. |
| Price | B | B&W 607 S2 is cheaper - $799 against $1,198, about 33% less. |
A MartinLogan Motion B10 B B&W 607 S2
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?
B&W 607 S2 has the edge on paper, though the margin is not large. The rows marked "depends" may matter more to you than the score does. Match it to your room: we rate MartinLogan Motion B10 the better fit for a mid-size room and a large room, and B&W 607 S2 for near-field listening and a small room. If your amplifier is modest, vintage or valve-based, MartinLogan Motion B10 is the safer partner - the other will want more current or more watts to sound its best.
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.