In this review, we will be comparing SA-CS9 and C 912, two Powered Subwoofer speakers from Sony and Jamo. 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 Jamo C 912 first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how the Sony SA-CS9 and Jamo C 912 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 Sony SA-CS9and Jamo C 912 have a single woofer setup however the Sony SA-CS9's woofer is 10-inch whereas the Jamo C 912 features a 12-inch woofer.
Frequency Response
SA-CS9 has a frequency range of 28-200 HZ whereas C 912 has a frequency range of 29-125 Hz. With a minimum frequency of 28Hz, the SA-CS9 can go slightly deeper then the C 912's min frequency of 29Hz.
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 Sony SA-CS9 and Jamo C 912 have Bass Reflex type cabinets. 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.
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 Sony SA-CS9's and Jamo C 912's external dimensions. Sony SA-CS9 has external dimensions of 295 x 345 x 400 mm ( 11.6 x 13.6 x 15.7 inch) whereas Jamo C 912 has external dimensions of 461.0 x 358.0 x 507.0mm ( 18-1/8 x 14-1/16 x 19-15/16inch) .
Jamo C 912 is clearly the larger of the two speakers. Its body is 63mm wider, 116mm taller and 107mm deeper than Sony SA-CS9.
Below you can see the front view size comparison of Sony SA-CS9 and Jamo C 912 in scale.
Comparison image of Sony SA-CS9 and Jamo C 912 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 Jamo C 912 is approximately 1815.1cm2 / 281.3inch2. The SA-CS9 requires 35% less surface area than the C 912 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 Sony SA-CS9 weighs 11.50kg / 25.3lbs and the Jamo C 912 weighs 18.98kg / 41.8lbs. This makes the C 912 65% heavier than the SA-CS9.
Here is a comparison of how SA-CS9 and C 912'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 Jamo C 912?
Here are the items that come with the C 912:
Powered subwooferGrille6-feet AC power cordUser ManualImportant Safety InstructionsWarranty Information
 Low Frequency Response |
28 Hz
vs
29 Hz
|
Generates deeper bass |
 High Frequency Response |
200k Hz
vs
125k Hz
|
Generates higher frequency |
 Height |
345mm
vs
461mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1180cm2 (295x400mm)
vs
1815cm2 (358x507mm)
|
Takes less floor space |
| Woofer Size |
12 inches
vs
10 inches
|
Larger woofer |
 Price per pair* |
229USD
vs
248USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Sony SA-CS9 |
Jamo C 912 |
| Brand |
Sony |
Jamo |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
115 watts |
200 watts |
| Frequency Response |
28-200 HZ |
29-125 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
115-watt RMS |
200-watt RMS |
| Watts Peak (Max) |
n/a |
400-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
12" |
| Woofer Composition |
foamed-mica cellular reinforced |
IMG |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
345.0mm (13.6") |
461.0mm (18.1") |
| Width |
295.0mm (11.6") |
358.0mm (14.1") |
| Depth |
400.0mm (15.7") |
507.0mm (20") |
| Weight |
11.50kg (25.3lbs) |
18.98kg (41.8lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Available Colors |
Black |
n/a |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
|
2 Years |
| Labor Warranty |
|
2 Years |