In this review, we will be comparing SUB6 and SUB8 v2, two Powered Subwoofer speakers by Kanto. 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 Kanto SUB8 v2 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 Kanto SUB8 v2 have a single woofer setup however the Kanto SUB6's woofer is 6-inch whereas the Kanto SUB8 v2 features a 8-inch woofer.
Frequency Response
SUB6 has a frequency range of 35-165 Hz whereas SUB8 v2 has a frequency range of 35-175 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 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 Kanto SUB8 v2's external dimensions. Kanto SUB6 has external dimensions of 241.3 x 222.3 x 266.7mm () whereas Kanto SUB8 v2 has external dimensions of 302.0 x 281.0 x 326.0mm (11-7/8inch x 11-1/16inch x 12-13/16inch).
Kanto SUB8 v2 is clearly the larger of the two speakers. Its body is 58.7mm wider, 60.7mm taller and 59.3mm deeper than Kanto SUB6.
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 Kanto SUB8 v2 is approximately 916.1cm2 / 142.0inch2. The SUB6 requires 35% less surface area than the SUB8 v2 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 Kanto SUB8 v2 weighs 7.82kg / 17.2lbs. This makes the SUB8 v2 47% heavier than the SUB6.
Here is a comparison of how SUB6 and SUB8 v2's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
 Height |
241mm
vs
302mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
592cm2
vs
916cm2
|
Takes less floor space |
 Woofer Size |
8 inches
vs
6 inches
|
Larger woofer |
 High Frequency Response |
175 Hz
vs
165 Hz
|
Generates higher frequency |
 Price per pair* |
240USD
vs
300USD
|
costs less (*prices may change depending on the seller, location and time) |
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.
Kanto SUB8 v2 needs about 55% more floor area. Kanto SUB8 v2 stands 59mm further into the room. Kanto SUB8 v2 is 61mm taller.
| General |
Kanto SUB6 |
Kanto SUB8 v2 |
| Brand |
Kanto |
Kanto |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Frequency Response |
35-165 Hz |
35-175 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
100-watt RMS |
150-watt RMS |
| Watts Peak (Max) |
200-watt RMS |
300-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
6" |
8" |
| Woofer Composition |
|
Paper |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
241.3mm (9.5") |
302.0mm (11.9") |
| Width |
222.3mm (8.8") |
281.0mm (11.1") |
| Depth |
266.7mm (10.5") |
326.0mm (12.8") |
| Weight |
5.31kg (11.7lbs) |
7.82kg (17.2lbs) |
| Enclosure |
|
Acoustic Suspension |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
2 Years |
| Labor Warranty |
2 Years |
2 Years |
Siblings in Kanto's SUB range - same design thinking, different size. It comes down to your room and your budget.
| Area | Better | Why |
|---|
| Bass depth | evenly matched | Effectively the same reach (35Hz vs 35Hz). |
| Amplifier power | B | Kanto SUB8 v2 has the bigger amplifier - 150W against 100W RMS, about 1.8dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | B | Kanto SUB8 v2 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 48% 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 | B | Kanto SUB8 v2 costs less - $240 against $300, about 20% less. |
A Kanto SUB6 B Kanto SUB8 v2
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?
Kanto SUB8 v2 is the easier recommendation: it leads on most of the measured areas and costs less. Take Kanto SUB6 if one of the "depends" rows describes your room. 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.