In this review, we will be comparing S 810 SUB and C 912, two Powered Subwoofer speakers by 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 Jamo S 810 SUB and Jamo C 912 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 Jamo S 810 SUBand Jamo C 912 have a single woofer setup however the Jamo S 810 SUB's woofer is 10-inch whereas the Jamo C 912 features a 12-inch woofer.
Frequency Response
S 810 SUB has a frequency range of 36-180 Hz whereas C 912 has a frequency range of 29-125 Hz. With a minimum frequency of 29Hz, the C 912 can go significantly deeper on the low side and provide stronger bass compared to the S 810 SUB's min frequency of 36Hz.
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 Jamo S 810 SUB 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
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 Jamo S 810 SUB's and Jamo C 912's external dimensions. Jamo S 810 SUB has external dimensions of 508.0 x 228.0 x 405.0mm (20 x 8-15/16 x 15-15/16inch) 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 S 810 SUB is 130mm narrower and 102mm less deeper than Jamo C 912 but it is also 47mm taller.
Below you can see the front view size comparison of Jamo S 810 SUB and Jamo C 912 in scale.
Comparison image of Jamo S 810 SUB 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 Jamo S 810 SUB is approximately 923.4cm2 / 143.1inch2 and base area of the Jamo C 912 is approximately 1815.1cm2 / 281.3inch2. The S 810 SUB requires 49% 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 Jamo S 810 SUB weighs 11.82kg / 26lbs and the Jamo C 912 weighs 18.98kg / 41.8lbs. This makes the C 912 61% heavier than the S 810 SUB.
Here is a comparison of how S 810 SUB 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 Jamo S 810 SUB?
Here are the items that are included inside the box of S 810 SUB:
- Powered subwoofer
- Grille
- 5-feet AC power cord
- 6.5-feet Mono-RCA cable
- 4 Rubber feet
- User Manual
- Important Safety Instructions
- Warranty Information
What's in the Box of Jamo C 912?
Here are the items that come with the C 912:
- Powered subwoofer
- Grille
- 6-feet AC power cord
- User Manual
- Important Safety Instructions
- Warranty Information
 High Frequency Response |
180 Hz
vs
125 Hz
|
Generates higher frequency |
 Base Surface Area |
923cm2
vs
1815cm2
|
Takes less floor space |
 Price per pair* |
199USD
vs
229USD
|
costs less (*prices may change depending on the seller, location and time) |
 Woofer Size |
12 inches
vs
10 inches
|
Larger woofer |
| Low Frequency Response |
29 Hz
vs
36 Hz
|
Generates deeper bass |
 Height |
461mm
vs
508mm
|
Easier to fit in smaller spaces |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
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.
Jamo C 912 needs about 97% more floor area. Jamo C 912 stands 102mm further into the room. Jamo S 810 SUB is 47mm taller.
| General |
Jamo S 810 SUB |
Jamo C 912 |
| Brand |
Jamo |
Jamo |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
75 watts |
200 watts |
| Frequency Response |
36-180 Hz |
29-125 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
75-watt RMS |
200-watt RMS |
| Watts Peak (Max) |
n/a |
400-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
12" |
| Woofer Composition |
Polyfiber |
IMG |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
Side |
front |
Physical Specs |
|
|
| Height |
508.0mm (20") |
461.0mm (18.1") |
| Width |
228.0mm (9") |
358.0mm (14.1") |
| Depth |
405.0mm (15.9") |
507.0mm (20") |
| Weight |
11.82kg (26lbs) |
18.98kg (41.8lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
2 Years |
| Labor Warranty |
2 Years |
2 Years |
Both are Jamo, so the design approach is shared and the differences are mostly in output, size and price.
| Area | Better | Why |
|---|
| Bass depth | B | Jamo C 912 goes deeper - 29Hz against 36Hz. A real difference, though most music has little content below 36Hz. |
| Amplifier power | B | Jamo C 912 has the bigger amplifier - 200W against 75W RMS, about 4.3dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | B | Jamo C 912 moves more air: 12" against 10" is 1.44x the cone area, not the 1.2x the diameters suggest. More area means the same output with less excursion, and less distortion with it. |
| Enclosure | evenly matched | Both are ported designs, so they roll off in much the same way. |
| Wireless option | depends | Only Jamo C 912 offers a wireless link (as a paid option). It decides where the sub can go if you cannot run a cable, and is worth nothing if you can. |
| Driver placement | depends | Jamo S 810 SUB fires side and Jamo C 912 fires front. A down-firing driver is more forgiving of a grille-less look and of a hard floor; a front-firing one is the safer choice on a thick carpet or a suspended timber floor. |
| Cabinet size | depends | Jamo S 810 SUB is about 44% 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 | Jamo S 810 SUB costs less - $199 against $229, about 13% less. |
A Jamo S 810 SUB B Jamo C 912
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?
Jamo C 912 leads across most of the measured areas for a modest premium, so it is the easier pick if the budget stretches. Jamo S 810 SUB is the one to take if it does not. If placement is the constraint - a corner, behind a sofa, under a desk - Jamo S 810 SUB 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.