In this review, we will be comparing 704 S2 and BW 603, two Passive Floor-standing speakers by Bowers Wilkins Let's have a brief look at the main features
of B&W 704 S2 and B&W 603 first before getting into our more
detailed comparison.
What size room are the B&W 704 S2 and B&W 603 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 704 S2 and B&W 603 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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Drivers
Both 704 S2 and BW 603 are 3-way speakers.
| Driver |
B&W 704 S2 |
B&W 603 |
|
Driver Setup
|
3-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
1 x 5-inch |
1 x 6-inch |
|
Woofer
|
2 x 5-inch
|
2 x 6.5-inch
|
704 S2 features a 1" Tweeter , a 5" Midrange and 2 x 5" Aerofoil Woofer . On the other hand, the BW 603 features a 1" Tweeter , a 6" Midrange and 2 x 6.5" Paper Woofer .
Frequency Response
704 S2 and BW 603 has exactly the same frequency range of 48-28k Hz.
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 Floor-standing class in our database.
Low Frequency
Floor-standing Speakers
High Frequency
Floor-standing 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
704 S2 and BW 603 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. 704 S2 sensitivity is rated at 88 dB and the BW 603's is at 88.5 dB. This 1 dB difference makes the B&W 603 a more sensitive speaker compared to B&W 704 S2, hence will play louder with the same amount of watts.
Sensitivity
Floor-standing 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.
704 S2 can handle a max power of 200 watts RMS from the amp the whereas 704 S2 has a max power handling value of 150 watts RMS , 50 watts less than the BW 603.
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 704 S2 and BW 603 features dual binding post speaker terminals for bi-amping or bi-wiring.
Cabinet Type and Port Position
Both 704 S2 and BW 603 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
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 704 S2's and B&W 603's external dimensions. B&W 704 S2 has external dimensions of 959.0 x 165.0 x 277.0mm ( 37.8-inch x 6.5-inch x 10.9-inch) whereas B&W 603 has external dimensions of 985.0 x 190.0 x 340.0mm ( 38.7 x 7.4 x 13.3inch) .
B&W 603 is clearly the larger of the two speakers. Its body is 25mm wider, 26mm taller and 63mm deeper than B&W 704 S2.
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 704 S2 is approximately 457.1cm2 / 70.9inch2 and base area of the B&W 603 is approximately 646.0cm2 / 100.1inch2. The 704 S2 requires 29% less surface area than the BW 603 which gives it a small advantage on placement in tight spaces.
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 704 S2 weighs 18.50kg / 40.7lbs and the B&W 603 weighs 24.14kg / 53.1lbs. This makes the BW 603 30% heavier than the 704 S2.
Here is a comparison of how 704 S2 and BW 603's weights compare with the average, max and min weights in Passive Floor-standing class.
Weight
All Floor-standing Speakers
What's in the Box of B&W 704 S2?
Here are the items that are included inside the box of 704 S2:
Floorstanding loudspeakerGrillePlinth (base)2 Jumper-straps (pre-installed)Two-piece foam port plug4 Rubber feet4 Spike feet4 Lock-nuts4 Screws4 Washers4 Lock washersHex-keyManualBowers & Wilkins brochureWarranty Information
What's in the Box of B&W 603?
Here are the items that come with the BW 603:
Floorstanding loudspeaker Grille Plinith (base) 2 Jumper-straps (pre-installed) 4 Rubber feet 4 Spike feet 4 Hex-nuts 4 Screws 4 Washers 4 Lock-washers Two-piece foam port plug Hex-key Manual Bowers & Wilkins brochure Warranty Information
 Height |
959mm
vs
985mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
457cm2 (165x277mm)
vs
646cm2 (190x340mm)
|
Takes less floor space |
 Max Input Power |
200 watts
vs
150 watts
|
Handle more power from your amplifier |
 Sensitivity |
89 dB
vs
88 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
6.5 inches
vs
5 inches
|
Larger woofer |
| General |
Bowers & Wilkins 704 S2 |
Bowers & Wilkins 603 |
| Brand |
Bowers Wilkins |
Bowers Wilkins |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
30-150 watts |
30-200 watts |
| Sensitivity |
88 dB |
88.5 dB |
| Impedance |
8 ohms |
8 ohms |
| Impedance |
3.1 ohms |
n/a |
| Frequency Response |
48-28k Hz |
48-28k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
5" |
6.5" |
| Woofer Composition |
Aerofoil |
Paper |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
5" |
6" |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
959.0mm (37.8") |
985.0mm (38.8") |
| Width |
165.0mm (6.5") |
190.0mm (7.5") |
| Depth |
277.0mm (10.9") |
340.0mm (13.4") |
| Weight |
18.50kg (40.7lbs) |
24.14kg (53.1lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Lacquer |
MDF/Vinyl |
| Available Colors |
Rosewood, Gloss Black, Satin White |
Black, White, Oak |
| 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 |