In this review, we will be comparing 707 S3 and 706 S2, two Passive Bookshelf speakers by Bowers Wilkins.
Let's have a brief look at the main features
of B&W 707 S3 and B&W 706 S2 first before getting into our more
detailed comparison.
| Key Specs | B&W 707 S3 | B&W 706 S2 |
|---|
| Brand | Bowers Wilkins
United Kingdom · founded 1966 | Bowers Wilkins
United Kingdom · founded 1966 |
|---|
| Design | 2-way | 2-way |
|---|
| Tweeter | 1" Decoupled Carbon Dome | 1" Decoupled Soft-Dome |
|---|
| Woofer | 5" Continuum | 6.5" Continuum |
|---|
| Frequency response | 50-28k Hz | 50-28k Hz |
|---|
| Sensitivity | 84 dB | 88 dB |
|---|
| Impedance | 8 ohms | 8 ohms |
|---|
| Power range | 30-100 watts | 30-120 watts |
|---|
| Weight | 6.16kg / 13.6lbs | 8.05kg / 17.7lbs |
|---|
| Dimensions (H x W x D) | 11.8" x 6.5" x 11.2"
300.0 x 165.0 x 284.0mm | 13.5" x 7.8" x 11.9"
340.0 x 200.0 x 301.0mm |
|---|
What size room are the B&W 707 S3 and B&W 706 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* |
B&W 707 S3 |
B&W 706 S2 |
| Near-field |
Average |
Poor |
| Small Room |
Good |
Average |
| Mid-size Room |
Average |
Good |
| Large Room |
Poor |
Average |
| Very Large Room |
Bad |
Poor |
(* 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.
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through our links. As an Amazon Associate I earn from qualifying purchases.
Drivers
Both 707 S3 and 706 S2 are 2-way speakers.
B&W 707 S3B&W 706 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 |
B&W 707 S3 |
B&W 706 S2 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5-inch
|
1 x 6.5-inch
|
707 S3 features a 1" Decoupled Carbon Dome Tweeter and 1 x 5" Continuum Woofer. On the other hand, the 706 S2 features a 1" Decoupled Soft-Dome Tweeter and 1 x 6.5" Continuum Woofer.
Frequency Response
707 S3 and 706 S2 has exactly the same frequency range of 50-28k Hz.
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
707 S3 and 706 S2 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. 707 S3 sensitivity is rated at 84 dB and the 706 S2's is at 88 dB. This 4 dB difference makes the B&W 706 S2 a more sensitive speaker compared to B&W 707 S3, 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.
706 S2 can handle a max power of 120 watts RMS, whereas 707 S3 has a max power handling value of 100 watts RMS, 20 watts less than the 706 S2.
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
Both 707 S3 and 706 S2 features dual binding post speaker terminals for bi-amping or bi-wiring.
B&W 707 S3's Binding post terminals allows Bi-amping or bi-wiring
Cabinet Type and Port Position
Both 707 S3 and 706 S2 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 B&W 707 S3's and B&W 706 S2's external dimensions. B&W 707 S3 has external dimensions of 300.0 x 165.0 x 284.0mm (1.8-inch x 6.5-inch x 11.2-inch) whereas B&W 706 S2 has external dimensions of 340.0 x 200.0 x 301.0mm (13.5-inch x 7.8-inch x 11.-inch).
B&W 706 S2 is clearly the larger of the two speakers. Its body is 35mm wider, 40mm taller and 17mm deeper than B&W 707 S3.
Below you can see the front view size comparison of B&W 707 S3 and B&W 706 S2 in scale.
Comparison image of B&W 707 S3 and B&W 706 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 B&W 707 S3 is approximately 468.6cm2 / 72.6inch2 and base area of the B&W 706 S2 is approximately 602.0cm2 / 93.3inch2. The 707 S3 requires 22% less surface area than the 706 S2 which gives it a small advantage 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 B&W 707 S3 and B&W 706 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 B&W 707 S3 weighs 6.16kg / 13.6lbs and the B&W 706 S2 weighs 8.05kg / 17.7lbs. This makes the 706 S2 31% heavier than the 707 S3.
Here is a comparison of how 707 S3 and 706 S2'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 707 S3?
Here are the items that are included inside the box of 707 S3:
- 2 Bookshelf loudspeakers
- 2 Grilles
- 2 Two-piece foam port plugs
- 8 Self-adhesive rubber feet
- 4 Jumper-straps
- Manual
- Bowers & Wilkins brochure
- Warranty Information
What's in the Box of B&W 706 S2?
Here are the items that come with the 706 S2:
- 2 Bookshelf loudspeakers
- 2 Grilles
- 2 Two-piece foam port plugs
- 8 Self-adhesive rubber feet
- 4 Jumper-straps
- Manual
- Bowers & Wilkins brochure
- Warranty Information
 Minimum Impedance |
4.0 ohms
vs
3.7 ohms
|
Very low impedance levels puts more pressure on amplifier |
 Height |
300mm
vs
340mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
468cm2
vs
602cm2
|
Takes less floor space |
 Price per pair* |
1799USD
vs
1999USD
|
costs less (*prices may change depending on the seller, location and time) |
 Max Input Power |
120 watts
vs
100 watts
|
Handle more power from your amplifier |
 Sensitivity |
88 dB
vs
84 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
6.5 inches
vs
5 inches
|
Larger woofer |
| General |
Bowers & Wilkins 707 S3 |
Bowers & Wilkins 706 S2 |
| Brand |
Bowers Wilkins |
Bowers Wilkins |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
30-100 watts |
30-120 watts |
| Sensitivity |
84 dB |
88 dB |
| Impedance |
8 ohms |
8 ohms |
| Impedance |
4.0 ohms |
3.7 ohms |
| Frequency Response |
50-28k Hz |
50-28k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5" |
6.5" |
| Woofer Composition |
Continuum |
Continuum |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Decoupled Carbon Dome |
Decoupled Soft-Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
300.0mm (11.8") |
340.0mm (13.4") |
| Width |
165.0mm (6.5") |
200.0mm (7.9") |
| Depth |
284.0mm (11.2") |
301.0mm (11.9") |
| Weight |
6.16kg (13.6lbs) |
8.05kg (17.7lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Wood veneer |
MDF/Wood Veneer |
| Available Colors |
Gloss Black,Satin White,Mocha,Rosenut |
Rosewood, Gloss Black, Satin White |
| Mounting Bracket |
No |
No |
| Recommended Stand Height |
24-26" |
24-26" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
Yes |
Yes |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |
A generation apart: B&W 707 S3 is the newer design, against a 2017 model. Newer is not automatically better, but the older one is more likely to be discounted or near run-out.
| Area | Better | Why |
|---|
| Bass | evenly matched | Much the same reach (50Hz vs 50Hz). |
| Amplifier needs | B | B&W 706 S2 is more sensitive (88dB vs 84dB), so it goes louder on the same amplifier. |
| Headroom | evenly matched | Similar power handling (100W vs 120W). |
| Size | depends | B&W 707 S3 is easier to place; B&W 706 S2 is bigger, which usually goes with fuller bass. Your room decides. |
| Expandability | depends | B&W 707 S3: bi-amping; B&W 706 S2: bi-amping. |
| Price | A | B&W 707 S3 is cheaper - $1,799 against $1,999, about 10% less. |
A B&W 707 S3 B B&W 706 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?
The usual trade-off: B&W 706 S2 measures better, B&W 707 S3 costs about about 11% 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. Match it to your room: we rate B&W 707 S3 the better fit for near-field listening and a small room, and B&W 706 S2 for a mid-size room and a large room. In a large or open-plan room, B&W 706 S2 has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, B&W 707 S3 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.