In this review, we will be comparing SA-CS9 and SUB8, two Powered Subwoofer speakers from Sony 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 Sony SA-CS9 and Kanto SUB8 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 Sony SA-CS9and Kanto SUB8 have a single woofer setup however the Sony SA-CS9's woofer is 10-inch whereas the Kanto SUB8 features a 8-inch woofer.
Frequency Response
SA-CS9 has a frequency range of 28-200 Hz whereas SUB8 has a frequency range of 35-175 Hz. With a minimum frequency of 28Hz, the SA-CS9 can go significantly deeper on the low side and provide stronger bass compared to 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
The Sony SA-CS9 has a Bass Reflex type cabinet. Bass Reflex type subwoofers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs. On the other hand the Kanto SUB8 have Acoustic Suspension type enclosure. 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
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 Sony SA-CS9's and Kanto SUB8's external dimensions. Sony SA-CS9 has external dimensions of 345.0 x 295.0 x 400.0mm (11.6 x 13.6 x 15.7 inch) 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).
Sony SA-CS9 is clearly the larger of the two speakers. Its body is 14mm wider, 44mm taller and 71mm deeper than Kanto SUB8.
Below you can see the front view size comparison of Sony SA-CS9 and Kanto SUB8 in scale.
Comparison image of Sony SA-CS9 and Kanto SUB8 Size and External Dimensions
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 Sony SA-CS9 is approximately 1180.0cm2 / 182.9inch2 and base area of the Kanto SUB8 is approximately 924.5cm2 / 143.3inch2. The SA-CS9 requires 28% more surface area than the SUB8 which gives it a small disadvantage 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 Sony SA-CS9 weighs 11.50kg / 25.3lbs and the Kanto SUB8 weighs 7.82kg / 17.2lbs. This makes the SA-CS9 47% heavier than the SUB8.
Here is a comparison of how SA-CS9 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 Sony SA-CS9?
Here are the items that are included inside the box of SA-CS9:
- Sony SA-CS9 10-inch 115W Subwoofer
- 6.5-feet Phono Cord
- 4 x Foot Pads
- Grille
- Limited 90-Day Manufacturer Warranty
What's in the Box of Kanto SUB8?
Here are the items that come with the SUB8:
- Powered subwoofer
- 6-feet AC power cord
- 9.75-feet mono-RCA cable
- User Manual
 Woofer Size |
10 inches
vs
8 inches
|
Larger woofer |
| Low Frequency Response |
28 Hz
vs
35 Hz
|
Generates deeper bass |
 High Frequency Response |
200 Hz
vs
175 Hz
|
Generates higher frequency |
 Price per pair* |
248USD
vs
300USD
|
costs less (*prices may change depending on the seller, location and time) |
 Height |
301mm
vs
345mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
924cm2
vs
1180cm2
|
Takes less floor space |
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.
Sony SA-CS9 needs about 28% more floor area. Sony SA-CS9 stands 71mm further into the room. Sony SA-CS9 is 44mm taller.
| General |
Sony SA-CS9 |
Kanto SUB8 |
| Brand |
Sony |
Kanto |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
115 watts |
125 watts |
| Frequency Response |
28-200 Hz |
35-175 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
115-watt RMS |
125-watt RMS |
| Watts Peak (Max) |
n/a |
250-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
8" |
| Woofer Composition |
foamed-mica cellular reinforced |
Paper |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
345.0mm (13.6") |
301.0mm (11.9") |
| Width |
295.0mm (11.6") |
281.0mm (11.1") |
| Depth |
400.0mm (15.7") |
329.0mm (13") |
| Weight |
11.50kg (25.3lbs) |
7.82kg (17.2lbs) |
| Enclosure |
Bass Reflex |
Acoustic Suspension |
| Available Colors |
Black |
n/a |
| Grille |
Yes |
n/a |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
|
2 Years |
| Labor Warranty |
|
2 Years |
A ported subwoofer against a sealed one. That is the most consequential line on this page: it decides how the bass rolls off, how it behaves in a small room, and how much output you get for the size of the box.
| Area | Better | Why |
|---|
| Bass depth | A | Sony SA-CS9 goes deeper - 28Hz against 35Hz. A real difference, though most music has little content below 35Hz. |
| Amplifier power | evenly matched | Much the same amplifier (115W vs 125W RMS) - under 1dB apart. |
| Driver area | A | Sony SA-CS9 moves more air: 10" against 8" is 1.56x the cone area, not the 1.25x the diameters suggest. More area means the same output with less excursion, and less distortion with it. |
| Enclosure | depends | Sony SA-CS9 is ported - a ported box gives more output low down for its size, at the cost of a steeper roll-off below tuning; Kanto SUB8 is sealed - a sealed box rolls off gently and is usually the easier one to integrate in a small or awkward room. Neither is better in the abstract; ported tends to suit films and sealed tends to suit music, and both generalisations have exceptions. |
| Cabinet size | depends | Kanto SUB8 is about 32% 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 | Sony SA-CS9 costs less - $248 against $300, about 17% less. |
A Sony SA-CS9 B Kanto SUB8
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?
Sony SA-CS9 is the easier recommendation: it leads on most of the measured areas and costs less. Take Kanto SUB8 if one of the "depends" rows describes your room. Films or music? If this is mainly a home cinema, Sony SA-CS9 will hit harder for the money; if it is mainly for music in a normal-sized room, Kanto SUB8 is usually the easier one to make sound right. If placement is the constraint - a corner, behind a sofa, under a desk - Kanto SUB8 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.