In this review, we will be comparing SUB6 and ASW608, two Powered Subwoofer speakers from Kanto and Bowers Wilkins. Being Powered subwoofers, they both have built-in amplifiers so you don't need an external power amp or an integrated amp to power them. Let's have a brief look at the main features of Kanto SUB6 and B&W ASW608 first before getting into our more detailed comparison.
The sections below take each area in turn: driver and amplifier, frequency response, physical size and connectivity.
Drivers
The efficiency of a subwoofer is directly proportional to the total radiating are squared hence the woofer quantity and diameter.Both Kanto SUB6and B&W ASW608 have a single woofer setup however the Kanto SUB6's woofer is 6-inch whereas the B&W ASW608 features a 8-inch woofer.
Frequency Response
SUB6 has a frequency range of 35-165 Hz whereas ASW608 has a frequency range of 32-140 Hz. With a minimum frequency of 32Hz, the ASW608 can go slightly deeper then the SUB6's min frequency of 35Hz.
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 Subwoofer class in our database.
Low Frequency
Subwoofer Speakers
High Frequency
Subwoofer Speakers
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 Kanto SUB6's and B&W ASW608's external dimensions. Kanto SUB6 has external dimensions of 241.3 x 222.3 x 266.7mm () whereas B&W ASW608 has external dimensions of 272.0 x 261.0 x 350.0mm (10-11/16 x 10-1/4 x 13-3/4inch).
B&W ASW608 is clearly the larger of the two speakers. Its body is 38.7mm wider, 30.7mm taller and 83.3mm deeper than Kanto SUB6.
Size, drawn to scale
Both speakers and both views share one scale, so everything here is directly comparable. Hover a box for its dimensions.
One scale for both, standing on the same surface and pushed back to the same wall, so the deeper one visibly sticks out further.
B&W ASW608 needs about 54% more floor or shelf area. B&W ASW608 is 83mm deeper, so it stands that much further out from the wall. B&W ASW608 is 31mm taller.
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 Kanto SUB6 is approximately 592.9cm2 / 91.9inch2 and base area of the B&W ASW608 is approximately 913.5cm2 / 141.6inch2. The SUB6 requires 35% less surface area than the ASW608 which gives it a small advantage on placement in tight spaces.
Weight Comparison The weight of a subwoofer may become an important factor if you need to move and reposition the unit often to find the optimal positioning, also known as 'Subwoofer Crawling'. The Kanto SUB6 weighs 5.31kg / 11.7lbs and the B&W ASW608 weighs 8.86kg / 19.5lbs. This makes the ASW608 67% heavier than the SUB6.
Here is a comparison of how SUB6 and ASW608's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
 High Frequency Response |
165 Hz
vs
140 Hz
|
Generates higher frequency |
 Height |
241mm
vs
272mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
592cm2
vs
913cm2
|
Takes less floor space |
 Price per pair* |
300USD
vs
599USD
|
costs less (*prices may change depending on the seller, location and time) |
 Woofer Size |
8 inches
vs
6 inches
|
Larger woofer |
| Low Frequency Response |
32 Hz
vs
35 Hz
|
Generates deeper bass |
Size, drawn to scale
Both subwoofers and both views share one scale, so everything here is directly comparable. Hover a box for its dimensions.
One scale for both, standing on the same floor and pushed back to the same wall, so the bigger one visibly takes more of the room.
B&W ASW608 needs about 54% more floor area. B&W ASW608 stands 83mm further into the room. B&W ASW608 is 31mm taller.
| General |
Kanto SUB6 |
Bowers & Wilkins ASW608 |
| Brand |
Kanto |
Bowers Wilkins |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Frequency Response |
35-165 Hz |
32-140 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
100-watt RMS |
200-watt RMS |
| Watts Peak (Max) |
200-watt RMS |
n/a |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
6" |
8" |
| Woofer Composition |
|
Paper/Aramid Fiber |
| Woofer Surround Material |
n/a |
Rubber |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
241.3mm (9.5") |
272.0mm (10.7") |
| Width |
222.3mm (8.8") |
261.0mm (10.3") |
| Depth |
266.7mm (10.5") |
350.0mm (13.8") |
| Weight |
5.31kg (11.7lbs) |
8.86kg (19.5lbs) |
| Enclosure |
|
Acoustic Suspension |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
2 Years |
| Labor Warranty |
2 Years |
2 Years |
Two quite different sizes of subwoofer. Room volume decides this more than anything else on the page: a big driver in a small room is wasted, and a small one in a large room is worked to death.
| Area | Better | Why |
|---|
| Bass depth | B | B&W ASW608 goes deeper - 32Hz against 35Hz. A real difference, though most music has little content below 35Hz. |
| Amplifier power | B | B&W ASW608 has the bigger amplifier - 200W against 100W RMS, about 3dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | B | B&W ASW608 moves more air: 8" against 6" is 1.78x the cone area, not the 1.33x the diameters suggest. More area means the same output with less excursion, and less distortion with it. |
| Enclosure | evenly matched | Both are sealed designs, so they roll off in much the same way. |
| Cabinet size | depends | Kanto SUB6 is about 42% smaller by volume. In a subwoofer that is a real trade rather than a preference: box volume is how you get output low down without a bigger amplifier. |
| Price | A | Kanto SUB6 costs less - $300 against $599, about 50% less. |
A Kanto SUB6 B B&W ASW608
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 subwoofers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
The usual trade-off: B&W ASW608 measures better, Kanto SUB6 costs about 50% less. In a normal room, placement will make a bigger difference than the gap between these two. Two small subwoofers beat one big one in most rooms - a pair evens out the room modes in a way no single box can, whatever its specs. At $300 each, two Kanto SUB6 cost about $600 against $599 for one of the other, which is worth a thought. If placement is the constraint - a corner, behind a sofa, under a desk - Kanto SUB6 is the one that will actually go there, and a well-placed small subwoofer beats a badly-placed big one every time.
One thing outweighs everything above: where the subwoofer stands. Room modes can add or remove 10dB or more at a given seat, which is far larger than any difference on this page. Before spending more, try the sub in two or three positions - the crawl test, where you put it in the listening seat and crawl the room to find where the bass sounds best, costs nothing and usually beats an upgrade.