In this review, we will be comparing Spektor 6 and BW 603, two Passive Floor-standing speakers from DALI and Bowers Wilkins.
Let's have a brief look at the main features
of DALI Spektor 6 and B&W 603 first before getting into our more
detailed comparison.
| Key Specs | DALI Spektor 6 | B&W 603 |
|---|
| Brand | DALI
Denmark · founded 1983 | Bowers Wilkins
United Kingdom · founded 1966 |
|---|
| Design | 2-way | 3-way |
|---|
| Tweeter | 1" Soft-Dome | 1" |
|---|
| Midrange | — | 6" |
|---|
| Woofer | 2 x 6.5" Wood Fiber | 2 x 6.5" Paper |
|---|
| Frequency response | 43-26k Hz | 48-28k Hz |
|---|
| Sensitivity | 88.5 dB | 88.5 dB |
|---|
| Impedance | 6 ohms | 8 ohms |
|---|
| Power range | 30-150 watts | 30-200 watts |
|---|
| Weight | 13.80kg / 30.4lbs | 24.14kg / 53.1lbs |
|---|
| Dimensions (H x W x D) | 38.3" x 7.7" x 12.3"
972.0 x 195.0 x 313.0mm | 38.7" x 7.4" x 13.3"
985.0 x 190.0 x 340.0mm |
|---|
What size room are the DALI Spektor 6 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* |
DALI Spektor 6 |
B&W 603 |
| Near-field |
Bad |
Bad |
| Small Room |
Poor |
Poor |
| Mid-size Room |
Good |
Good |
| Large Room |
Good |
Good |
| Very Large Room |
Poor |
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.
Drivers
One of the fundamental differences between these two speakers is that Spektor 6 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.
DALI Spektor 6B&W 603
TweeterMidrangeWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
DALI Spektor 6 |
B&W 603 |
|
Driver Setup
|
2-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
1 x 6-inch |
|
Woofer
|
2 x 6.5-inch
|
2 x 6.5-inch
|
Spektor 6 features a 1" Soft-Dome Tweeter and 2 x 6.5" Wood Fiber 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
Spektor 6 has a frequency range of 43-26k Hz whereas BW 603 has a frequency range of 48-28k Hz. With a minimum frequency of 43Hz, the Spektor 6 can go significantly deeper on the low side and provide stronger bass compared to the BW 603's min frequency of 48Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Floor-standing class in our database.
Low Frequency
Floor-standing 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
Spektor 6 is a 6 ohms speaker compared to the BW 603 which has a nominal impedance of 8 ohms.
On the other hand, they have the same sensitivity of 88.5 dBdB.
Sensitivity
Floor-standing 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.
BW 603 can handle a max power of 200 watts RMS, whereas Spektor 6 has a max power handling value of 150 watts RMS, 50 watts less than the BW 603.
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
BW 603 features Post posts which make bi-amping or bi-wiring possible. Spektor 6 has a Binding post which doesn't feature bi-amping/bi-wiring.
Cabinet Type and Port Position
Both Spektor 6 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
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 DALI Spektor 6's and B&W 603's external dimensions. DALI Spektor 6 has external dimensions of 972.0 x 195.0 x 313.0mm (38.3 x 7.7 x 12.3inch) whereas B&W 603 has external dimensions of 985.0 x 190.0 x 340.0mm (38.7 x 7.4 x 13.3inch).
DALI Spektor 6 is 13mm shorter and 27mm less deeper than B&W 603 but it is also 5mm wider.
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 DALI Spektor 6 is approximately 610.4cm2 / 94.6inch2 and base area of the B&W 603 is approximately 646.0cm2 / 100.1inch2. The Spektor 6 requires 6% 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 DALI Spektor 6 weighs 13.80kg / 30.4lbs and the B&W 603 weighs 24.14kg / 53.1lbs. This makes the BW 603 75% heavier than the Spektor 6.
Here is a comparison of how Spektor 6 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 DALI Spektor 6?
Here are the items that are included inside the box of Spektor 6:
- Floorstanding loudspeaker
- Grille
- Rubber Feet
- 4 Spike-feet
- 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
 Low Frequency Response |
43 Hz
vs
48 Hz
|
Generates deeper bass |
 Height |
972mm
vs
985mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
610cm2
vs
646cm2
|
Takes less floor space |
 Max Input Power |
200 watts
vs
150 watts
|
Handle more power from your amplifier |
 Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
 Nominal Impedance |
8 ohms
vs
6 ohms
|
Less selective with amplifiers |
 High Frequency Response |
28k Hz
vs
26k Hz
|
Generates higher frequency |
 Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
| General |
DALI Spektor 6 |
Bowers & Wilkins 603 |
| Brand |
DALI |
Bowers Wilkins |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
30-150 watts |
30-200 watts |
| Sensitivity |
88.5 dB |
88.5 dB |
| Impedance |
6 ohms |
8 ohms |
| Frequency Response |
43-26k Hz |
48-28k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
6.5" |
6.5" |
| Woofer Composition |
Wood Fiber |
Paper |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Soft-Dome |
n/a |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
6" |
| Crossover Frequency |
2500Hz |
n/a |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
972.0mm (38.3") |
985.0mm (38.8") |
| Width |
195.0mm (7.7") |
190.0mm (7.5") |
| Depth |
313.0mm (12.3") |
340.0mm (13.4") |
| Weight |
13.80kg (30.4lbs) |
24.14kg (53.1lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Wood-grain vinyl |
MDF/Vinyl |
| Available Colors |
Black Ash, Walnut, White |
Black, White, Oak |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
Yes |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |
No single best speaker here - they are built to different priorities, and the right one depends on your room, your amplifier and what you listen to.
| Area | Better | Why |
|---|
| Bass | A | DALI Spektor 6 digs deeper - 43Hz against 48Hz. A subwoofer would even that out. |
| Amplifier needs | evenly matched | Similar sensitivity (89dB vs 89dB) - both want much the same power. |
| Amplifier match | B | B&W 603 is the easier load at 8 ohms. |
| Headroom | B | B&W 603 takes more power (200W vs 150W) - more in hand in a big room. |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Expandability | B | B&W 603: bi-amping. |
A DALI Spektor 6 B B&W 603
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?
B&W 603 has the edge on paper, though the margin is not large. The rows marked "depends" may matter more to you than the score does. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 48Hz anyway, so judge these on the other rows instead.
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.