In this review, we will be comparing S60 and BW 603, two Passive Floor-standing speakers from Polk Audio and Bowers Wilkins. Let's have a brief look at the main features
of Polk S60 and B&W 603 first before getting into our more
detailed comparison.
What size room are the Polk S60 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 Polk S60 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
One of the fundamental differences between these two speakers is that S60 is a 2-way design whereas the BW 603 is a 3-way speaker. 3-way designs utilize a midrange driver in addition to the tweeter and woofer on 2-way designs. Designing a crossover for a 3-way speaker is a complicated process and generally increases the overall cost of the speaker.
| Driver |
Polk S60 |
B&W 603 |
|
Driver Setup
|
2-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
1 x 6-inch |
|
Woofer
|
3 x 6.5-inch
|
2 x 6.5-inch
|
S60 features a 1" Terylene Dome Tweeter and 3 x 6.5" Mica-reinforced polypropylene Woofer with a Crossover frequency at 2500Hz. On the other hand, the BW 603 features a 1" Tweeter , a 6" Midrange and 2 x 6.5" Paper Woofer .
Frequency Response
S60 has a frequency range of 26-40k Hz whereas BW 603 has a frequency range of 48-28k Hz. With a minimum frequency of 26Hz, the S60 can go significantly deeper on the low side and provide stronger bass compared to the BW 603's min frequency of 48Hz.
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
S60 and BW 603 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. S60 sensitivity is rated at 90 dB and the BW 603's is at 88.5 dB. This 1 dB difference makes the Polk S60 a more sensitive speaker compared to B&W 603, 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.
S60 can handle a max power of 300 watts RMS from the amp the whereas BW 603 has a max power handling value of 200 watts RMS, 100 watts less than the S60.
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 S60 and BW 603 features dual binding post speaker terminals for bi-amping or bi-wiring.
Polk S60's 5-way post terminals allows Bi-amping or bi-wiring
Cabinet Type and Port Position
S60 has a bottom firing port whereas BW 603 has a rear firing ports. Polk S60's bottom-firing port gives more flexibility in placement in regards to proximity to walls compared to B&W 603 with its rear-firing port.
Polk S60 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 Polk S60's and B&W 603's external dimensions. Polk S60 has external dimensions of 1131.0 x 299.0 x 401.0mm ( 44-1/2 x 11-3/4 x 15-3/4inch) whereas B&W 603 has external dimensions of 985.0 x 190.0 x 340.0mm ( 38.7 x 7.4 x 13.3inch) .
Polk S60 is clearly the larger of the two speakers. Its body is 109mm wider, 146mm taller and 61mm deeper than B&W 603.
Below you can see the front view size comparison of Polk S60 and B&W 603 in scale.
Comparison image of Polk S60 and B&W 603 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 Polk S60 is approximately 1199.0cm2 / 185.8inch2 and base area of the B&W 603 is approximately 646.0cm2 / 100.1inch2. The S60 requires 86% more surface area than the BW 603 which gives it a small disadvantage 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 Polk S60 weighs 23.60kg / 51.9lbs and the B&W 603 weighs 24.14kg / 53.1lbs. This makes the BW 603 2% heavier than the S60.
Here is a comparison of how S60 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 Polk S60?
Here are the items that are included inside the box of S60:
Floorstanding loudspeakerGrille (attached)4 Feet (pre-installed)Owners ManualOnline Product Registration
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
 Max Input Power |
300 watts
vs
200 watts
|
Handle more power from your amplifier |
 Sensitivity |
90 dB
vs
89 dB
|
Play louder with same amount of amplification power |
 Number of Woofers |
3
vs
2
|
More woofers |
| Low Frequency Response |
26 Hz
vs
48 Hz
|
Generates deeper bass |
 High Frequency Response |
40k Hz
vs
28k Hz
|
Generates higher frequency |
 Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
 Height |
985mm
vs
1131mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
646cm2 (190x340mm)
vs
1199cm2 (299x401mm)
|
Takes less floor space |
| General |
Polk Audio Signature S60 |
Bowers & Wilkins 603 |
| Brand |
Polk Audio |
Bowers Wilkins |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
20-300 watts |
30-200 watts |
| Sensitivity |
90 dB |
88.5 dB |
| Impedance |
8 ohms |
8 ohms |
| Frequency Response |
26-40k Hz |
48-28k Hz |
Drivers |
|
|
| Woofer Quantity |
3 |
2 |
| Woofer Size |
6.5" |
6.5" |
| Woofer Composition |
Mica-reinforced polypropylene |
Paper |
| Woofer Surround Material |
Butyl rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Dome |
n/a |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
6" |
| Crossover Frequency |
2500Hz |
n/a |
| Firing Direction |
bottom |
rear |
Physical Specs |
|
|
| Height |
1131.0mm (44.5") |
985.0mm (38.8") |
| Width |
299.0mm (11.8") |
190.0mm (7.5") |
| Depth |
401.0mm (15.8") |
340.0mm (13.4") |
| Weight |
23.60kg (51.9lbs) |
24.14kg (53.1lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
Meddite MDF |
MDF/Vinyl |
| Available Colors |
Black |
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 |