In this review, we will be comparing S 808 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 808 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.
**This post contains affiliate links, and we will be compensated if you make a purchase after clicking through our 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 Jamo S 808 SUBand Jamo C 912 have a single woofer setup however the Jamo S 808 SUB's woofer is 8-inch whereas the Jamo C 912 features a 12-inch woofer.
Frequency Response
S 808 SUB has a frequency range of 39-180 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 808 SUB's min frequency of 39Hz.
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 808 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 808 SUB's and Jamo C 912's external dimensions. Jamo S 808 SUB has external dimensions of 459.0 x 178.0 x 356.0mm (18-1/16 x 7 x 14inch) 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 180mm wider, 2mm taller and 151mm deeper than Jamo S 808 SUB.
Below you can see the front view size comparison of Jamo S 808 SUB and Jamo C 912 in scale.
Comparison image of Jamo S 808 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 808 SUB is approximately 633.7cm2 / 98.2inch2 and base area of the Jamo C 912 is approximately 1815.1cm2 / 281.3inch2. The S 808 SUB requires 65% 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 808 SUB weighs 8.64kg / 19lbs and the Jamo C 912 weighs 18.98kg / 41.8lbs. This makes the C 912 120% heavier than the S 808 SUB.
Here is a comparison of how S 808 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 808 SUB?
Here are the items that are included inside the box of S 808 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 |
180k Hz
vs
125k Hz
|
Generates higher frequency |
 Height |
459mm
vs
461mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
633cm2
vs
1815cm2
|
Takes less floor space |
 Price per pair* |
149USD
vs
229USD
|
costs less (*prices may change depending on the seller, location and time) |
 Woofer Size |
12 inches
vs
8 inches
|
Larger woofer |
| Low Frequency Response |
29 Hz
vs
39 Hz
|
Generates deeper bass |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
| General |
Jamo S 808 SUB |
Jamo C 912 |
| Brand |
Jamo |
Jamo |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
50 watts |
200 watts |
| Frequency Response |
39-180 Hz |
29-125 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
50-watt RMS |
200-watt RMS |
| Watts Peak (Max) |
100-watt RMS |
400-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
8" |
12" |
| Woofer Composition |
Polyfiber |
IMG |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
Side |
front |
Physical Specs |
|
|
| Height |
459.0mm (18.1") |
461.0mm (18.1") |
| Width |
178.0mm (7") |
358.0mm (14.1") |
| Depth |
356.0mm (14") |
507.0mm (20") |
| Weight |
8.64kg (19lbs) |
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 |