In this review, we will be comparing Demand D17 and BW 603, two Passive Floor-standing speakers from Definitive Technology and Bowers Wilkins.
Let's have a brief look at the main features
of Definitive Demand D17 and B&W 603 first before getting into our more
detailed comparison.
Definitive Demand D17 Key Specs
- 3-way Design
- 1" dome Tweeter
- 6.5" Midrange
- 2 x 6.5" Carbon-fiber Woofer
- 42-22k Hz Frequency Response
- 87 dB Sensitivity
- Impedance: 8ohms
- Power Range:40-300watts
- Weight:29.10kg
- Dimensions (H x W x D): 1086.0" x 10-1/4" x 14-3/4"( 1086.0 x 261.0 x 375.0mm )
B&W 603 Key Specs
- 3-way Design
- 1" Tweeter
- 6" Midrange
- 2 x 6.5" Paper Woofer
- 6" Midrange
- 48-28k Hz Frequency Response
- 88.5 dB Sensitivity
- Impedance: 8ohms
- Power Range:30-200watts
- Weight:24.14kg
- Dimensions (H x W x D): 985.0" x 7.4" x 13.3"( 985.0 x 190.0 x 340.0mm )
What size room are the Definitive Demand D17 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:
| Listening Environment* |
Definitive Demand D17 |
B&W 603 |
| Near-field |
Bad |
Bad |
| Small Room |
Poor |
Poor |
| Mid-size Room |
Average |
Good |
| Large Room |
Good |
Good |
| Very Large Room |
Average |
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.)
In the following sections, we will get into more detail in order to better understand how the Definitive Demand D17 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.
**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 Demand D17 and BW 603 are 3-way speakers.
| Driver |
Definitive Demand D17 |
B&W 603 |
|
Driver Setup
|
3-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
1 x 6.5-inch |
1 x 6-inch |
|
Woofer
|
2 x 6.5-inch
|
2 x 6.5-inch
|
Demand D17 features a 1" aluminum dome Tweeter , a 6.5" Midrange and 2 x 6.5" Carbon-fiber Woofer . On the other hand, the BW 603 features a 1" Tweeter , a 6" Midrange and 2 x 6.5" Paper Woofer .
Frequency Response
Demand D17 has a frequency range of 42-22k Hz whereas BW 603 has a frequency range of 48-28k Hz. With a minimum frequency of 42Hz, the Demand D17 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
Demand D17 and BW 603 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Demand D17 sensitivity is rated at 87 dB and the BW 603's is at 88.5 dB. This 2 dB difference makes the B&W 603 a more sensitive speaker compared to Definitive Demand D17, 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.
Demand D17 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 Demand D17.
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 Demand D17 and BW 603 features dual binding post speaker terminals for bi-amping or bi-wiring.
Definitive Demand D17's 5-Way Post terminals allows Bi-amping or bi-wiring
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 Definitive Demand D17's and B&W 603's external dimensions. Definitive Demand D17 has external dimensions of 1086.0 x 261.0 x 375.0mm ( 42-3/4 x 10-1/4 x 14-3/4inch) whereas B&W 603 has external dimensions of 985.0 x 190.0 x 340.0mm ( 38.7 x 7.4 x 13.3inch) .
Definitive Demand D17 is clearly the larger of the two speakers. Its body is 71mm wider, 101mm taller and 35mm deeper than B&W 603.
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 Definitive Demand D17 is approximately 978.8cm2 / 151.7inch2 and base area of the B&W 603 is approximately 646.0cm2 / 100.1inch2. The Demand D17 requires 52% 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 Definitive Demand D17 weighs 29.10kg / 64lbs and the B&W 603 weighs 24.14kg / 53.1lbs. This makes the Demand D17 21% heavier than the BW 603.
Here is a comparison of how Demand D17 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 Definitive Demand D17?
Here are the items that are included inside the box of Demand D17:
Left floorstanindg loudspeakerRight floorstading loudspeaker2 Grilles4 Jumper-straps (pre-installed)2 Bases8 Spike feet8 Floor-glides8 Lock-rings8 ScrewsCleaning clothOwners Manual
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 |
 Low Frequency Response |
42 Hz
vs
48 Hz
|
Generates deeper bass |
 Sensitivity |
89 dB
vs
87 dB
|
Play louder with same amount of amplification power |
 High Frequency Response |
28k Hz
vs
22k Hz
|
Generates higher frequency |
 Height |
985mm
vs
1086mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
646cm2
vs
978cm2
|
Takes less floor space |
| General |
Definitive Technology Demand D17 |
Bowers & Wilkins 603 |
| Brand |
Definitive Technology |
Bowers Wilkins |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
40-300 watts |
30-200 watts |
| Sensitivity |
87 dB |
88.5 dB |
| Impedance |
8 ohms |
8 ohms |
| Frequency Response |
42-22k Hz |
48-28k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
6.5" |
6.5" |
| Woofer Composition |
Carbon-fiber |
Paper |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
dome |
n/a |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
6.5" |
6" |
| Firing Direction |
n/a |
rear |
Physical Specs |
|
|
| Height |
1086.0mm (42.8") |
985.0mm (38.8") |
| Width |
261.0mm (10.3") |
190.0mm (7.5") |
| Depth |
375.0mm (14.8") |
340.0mm (13.4") |
| Weight |
29.10kg (64lbs) |
24.14kg (53.1lbs) |
| Enclosure |
Passive Radiator |
Bass Reflex |
| Finish |
MDF/Aluminum |
MDF/Vinyl |
| Available Colors |
Gloss 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 |