In this review, we will be comparing S6 and SUB8, two Powered Subwoofer speakers from Audioengine and 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 Audioengine S6 and Kanto SUB8 first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how the Audioengine S6 and Kanto SUB8 compare and hopefully end up with enough arguments to decide which one of these subwoofers 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
The efficiency of a subwoofer is directly proportional to the total radiating are squared hence the woofer quantity and diameter.Both Audioengine S6and Kanto SUB8 have a single woofer setup however the Audioengine S6's woofer is 6-inch whereas the Kanto SUB8 features a 8-inch woofer.
Frequency Response
S6 has a frequency range of 33-132 Hz whereas SUB8 has a frequency range of 35-175 Hz. With a minimum frequency of 33Hz, the S6 can go slightly deeper then the SUB8'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
Cabinet Type
Both Audioengine S6 and Kanto SUB8 have Acoustic Suspension type cabinets. Acoustic Suspension aka Sealed type subwoofers have enclosures that are sealed hence no ports or holes exists on the cabinet. Sealed designs helps to provide more accurate and tight bass responses compared to ported designs.
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 Audioengine S6's and Kanto SUB8's external dimensions. Audioengine S6 has external dimensions of 250.0 x 221.0 x 281.0mm ( 9-13/16inch x 8-11/16inch x 11-1/16inch ) whereas Kanto SUB8 has external dimensions of 301.0 x 281.0 x 329.0mm ( 11-13/16 x 11-1/16 x 12-15/16inch) .
Kanto SUB8 is clearly the larger of the two speakers. Its body is 60mm wider, 51mm taller and 48mm deeper than Audioengine S6.
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 Audioengine S6 is approximately 621.0cm2 / 96.3inch2 and base area of the Kanto SUB8 is approximately 924.5cm2 / 143.3inch2. The S6 requires 33% less surface area than the SUB8 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 Audioengine S6 weighs 7.00kg / 15.4lbs and the Kanto SUB8 weighs 7.82kg / 17.2lbs. This makes the SUB8 12% heavier than the S6.
Here is a comparison of how S6 and SUB8's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of Audioengine S6?
Here are the items that are included inside the box of S6:
Powered subwooferGrille6-feet AC power cord6.5-feet Stereo RCA cable6.5-feet Stereo minijack audio cableCloth subwoofer bagCloth cable bagQuick Start GuideAudioengine brochure
What's in the Box of Kanto SUB8?
Here are the items that come with the SUB8:
Powered subwoofer6-feet AC power cord9.75-feet mono-RCA cableUser Manual
 Low Frequency Response |
33 Hz
vs
35 Hz
|
Generates deeper bass |
 Height |
250mm
vs
301mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
621cm2
vs
924cm2
|
Takes less floor space |
 Price per pair* |
299USD
vs
300USD
|
costs less (*prices may change depending on the seller, location and time) |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
| Woofer Size |
8 inches
vs
6 inches
|
Larger woofer |
 High Frequency Response |
175k Hz
vs
132k Hz
|
Generates higher frequency |
| General |
Audioengine S6 |
Kanto SUB8 |
| Brand |
Audioengine |
Kanto |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
140 watts |
125 watts |
| Frequency Response |
33-132 Hz |
35-175 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
140-watt RMS |
125-watt RMS |
| Watts Peak (Max) |
n/a |
250-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
6" |
8" |
| Woofer Composition |
Treated paper |
Paper |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
250.0mm (9.8") |
301.0mm (11.9") |
| Width |
221.0mm (8.7") |
281.0mm (11.1") |
| Depth |
281.0mm (11.1") |
329.0mm (13") |
| Weight |
7.00kg (15.4lbs) |
7.82kg (17.2lbs) |
| Enclosure |
Acoustic Suspension |
Acoustic Suspension |
| Grille |
Yes |
n/a |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
3 Years |
2 Years |
| Labor Warranty |
3 Years |
2 Years |