In this review, we will be comparing 706 S2 and Diamond 220, two Passive Bookshelf speakers from Bowers Wilkins and Wharfedale. Let's have a brief look at the main features
of B&W 706 S2 and Wharfedale 220 first before getting into our more
detailed comparison.
What size room are the B&W 706 S2 and Wharfedale 220 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:
In the following sections, we will get into more detail in order to better understand how the B&W 706 S2 and Wharfedale 220 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
**This post contains affiliate links, and I will be compensated if you make a purchase after clicking
through my links. As an Amazon Associate I earn from qualifying purchases.
Drivers
Both 706 S2 and Diamond 220 are 2-way speakers.
Driver |
B&W 706 S2 |
Wharfedale 220 |
Driver Setup
|
2-way
|
2-way
|
Tweeter
|
1-inch
|
1-inch
|
Midrange
|
- |
- |
Woofer
|
1 x 6.5-inch
|
1 x 5-inch
|
706 S2 features a 1" Decoupled Soft-Dome Tweeter and 1 x 6.5" Continuum Woofer . On the other hand, the Diamond 220 features a 1" Dome Tweeter and 1 x 5" Woven Kevlar Woofer with a Crossover frequency at 2200Hz.
Frequency Response
706 S2 has a frequency range of 50-28k Hz whereas Diamond 220 has a frequency range of 56-20k Hz. With a minimum frequency of 50Hz, the 706 S2 can go significantly deeper on the low side and provide stronger bass compared to the Diamond 220's min frequency of 56Hz.
Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers in the Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf Speakers
None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.
Impedance and Sensitivity
706 S2 and Diamond 220 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. 706 S2 sensitivity is rated at 88 dB and the Diamond 220's is at 86 dB. This 2 dB difference makes the B&W 706 S2 a more sensitive speaker compared to Wharfedale 220, 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. While using an amplifier within this range ensures the nominal performance , inputting a power that is higher than the max wattage can result in a damaged speaker.
706 S2 can handle a max power of 120 watts RMS from the amp the whereas Diamond 220 has a max power handling value of 100 watts RMS, 20 watts less than the 706 S2.
Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker
compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters
such as Impedance, sensitivity and system efficiencies.
Input Type and Bi-Amping / Bi-Wiring
Both 706 S2 and Diamond 220 features dual binding post speaker terminals for bi-amping or bi-wiring.
Cabinet Type and Port Position
706 S2 has a rear firing port whereas Diamond 220 has a bottom firing ports. Wharfedale 220's bottom-firing port gives more flexibility in placement in regards to proximity to walls compared to B&W 706 S2 with its rear-firing port.
Physical Specs
Size of a speaker can sometimes become 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 706 S2's and Wharfedale 220's external dimensions. 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) whereas Wharfedale 220 has external dimensions of 315.0 x 174.0 x 255.0mm ( 12.4 x 6.8 x 10.0inch) .
B&W 706 S2 is clearly the larger of the two speakers. Its body is 26mm wider, 25mm taller and 46mm deeper than Wharfedale 220.
Below you can see the front view size comparison of B&W 706 S2 and Wharfedale 220 in scale.
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 706 S2 is approximately 602.0cm2 / 93.3inch2 and base area of the Wharfedale 220 is approximately 443.7cm2 / 68.8inch2. The 706 S2 requires 36% more surface area than the Diamond 220 which gives it a small disadvantage on placement in tight spaces.
Here is an another comparison that shows both speakers on a BDI Octave Media Cabinet, next to a standard size amplifier and turntable in scale:
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 706 S2 weighs 8.05kg / 17.7lbs and the Wharfedale 220 weighs 5.32kg / 11.7lbs. This makes the 706 S2 51% heavier than the Diamond 220.
Here is a comparison of how 706 S2 and Diamond 220'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 706 S2?
Here are the items that are included inside the box of 706 S2:
2 Bookshelf loudspeakers2 Grilles2 Two-piece foam port plugs8 Self-adhesive rubber feet4 Jumper-straps Manual Bowers & Wilkins brochureWarranty Information
What's in the Box of Wharfedale 220?
Here are the items that come with the Diamond 220:
2 Bookshelf loudspeakers 2 Grilles (pre-installed) 8 Self-adhesive rubber feet User's Manual Installation Guide
Max Input Power |
120 watts
vs
100 watts
|
Handle more power from your amplifier |
Sensitivity |
88 dB
vs
86 dB
|
Play louder with same amount of amplification power |
Woofer Size |
6.5 inches
vs
5 inches
|
Larger woofer |
Low Frequency Response |
50 Hz
vs
56 Hz
|
Generates deeper bass |
High Frequency Response |
28k Hz
vs
20k Hz
|
Generates higher frequency |
Minimum Impedance |
4.1 ohms
vs
3.7 ohms
|
Very low impedance levels puts more pressure on amplifier |
Height |
315mm
vs
340mm
|
Easier to fit in smaller spaces |
Base Surface Area |
443cm2 (174x255mm)
vs
602cm2 (200x301mm)
|
Takes less floor space |
Price per pair* |
249USD
vs
1999USD
|
costs less (*prices may change depending on the seller, location and time) |
General |
Bowers & Wilkins 706 S2 |
Wharfedale Diamond 220 |
Brand |
Bowers Wilkins |
Wharfedale |
Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
Power Range |
30-120 watts |
25-100 watts |
Sensitivity |
88 dB |
86 dB |
Impedance |
8 ohms |
8 ohms |
Impedance |
3.7 ohms |
4.1 ohms |
Frequency Response |
50-28k Hz |
56-20k Hz |
Drivers |
|
|
Woofer Quantity |
1 |
1 |
Woofer Size |
6.5" |
5" |
Woofer Composition |
Continuum |
Woven Kevlar |
Woofer Surround Material |
Rubber |
Rubber |
Tweeter Size |
1" |
1" |
Tweeter Type |
Decoupled Soft-Dome |
Dome |
Aimable Tweeter |
No |
No |
Midrange Driver |
No |
No |
Crossover Frequency |
n/a |
2200Hz |
Firing Direction |
rear |
bottom |
Physical Specs |
|
|
Height |
340.0mm (13.4") |
315.0mm (12.4") |
Width |
200.0mm (7.9") |
174.0mm (6.9") |
Depth |
301.0mm (11.9") |
255.0mm (10") |
Weight |
8.05kg (17.7lbs) |
5.32kg (11.7lbs) |
Enclosure |
Bass Reflex |
Bass Reflex |
Finish |
MDF/Wood Veneer |
MDF/Wood veneer |
Available Colors |
Rosewood, Gloss Black, Satin White |
Black, White, Walnut |
Mounting Bracket |
No |
No |
Recommended Stand Height |
24-26" |
24" |
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 |