In this review, we will be comparing A100P and C 912, two Powered Subwoofer speakers from JBL 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 JBL Stage A100P 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 JBL Stage A100P 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 JBL Stage A100Pand Jamo C 912 have a single woofer setup however the JBL Stage A100P's woofer is 10-inch whereas the Jamo C 912 features a 12-inch woofer.
Frequency Response
A100P has a frequency range of 35-150 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 A100P'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 JBL Stage A100P has a Bass reflex type cabinet. On the other hand the Jamo C 912 have Bass Reflex type enclosure. 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 JBL Stage A100P's and Jamo C 912's external dimensions. JBL Stage A100P has external dimensions of 359.0 x 337.0 x 435.0mm ( 14-1/8 x 13-1/4 x 17-1/8inch) 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 21mm wider, 102mm taller and 72mm deeper than JBL Stage A100P.
Below you can see the front view size comparison of JBL Stage A100P and Jamo C 912 in scale.
Comparison image of JBL Stage A100P 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 JBL Stage A100P is approximately 1466.0cm2 / 227.2inch2 and base area of the Jamo C 912 is approximately 1815.1cm2 / 281.3inch2. The A100P requires 19% 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 JBL Stage A100P weighs 13.66kg / 30.1lbs and the Jamo C 912 weighs 18.98kg / 41.8lbs. This makes the C 912 39% heavier than the A100P.
Here is a comparison of how A100P 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 JBL Stage A100P?
Here are the items that are included inside the box of A100P:
Powered subwooferGrille6-feet AC power cord4 Spike feetOwners ManualWarranty CardImportant Safety Instructions
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
 High Frequency Response |
150k Hz
vs
125k Hz
|
Generates higher frequency |
 Height |
359mm
vs
461mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1466cm2 (337x435mm)
vs
1815cm2 (358x507mm)
|
Takes less floor space |
 Woofer Size |
12 inches
vs
10 inches
|
Larger woofer |
| Low Frequency Response |
29 Hz
vs
35 Hz
|
Generates deeper bass |
 Port Position |
Front
vs
Rear
|
Gives more flexibility placing close to walls |
 Price per pair* |
229USD
vs
240USD
|
costs less (*prices may change depending on the seller, location and time) |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
| General |
JBL Stage A100P |
Jamo C 912 |
| Brand |
JBL |
Jamo |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
150 watts |
200 watts |
| Frequency Response |
35-150 Hz |
29-125 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
150-watt RMS |
200-watt RMS |
| Watts Peak (Max) |
300-watt RMS |
400-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
12" |
| Woofer Composition |
Polycellulose |
IMG |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
rear |
front |
Physical Specs |
|
|
| Height |
359.0mm (14.1") |
461.0mm (18.1") |
| Width |
337.0mm (13.3") |
358.0mm (14.1") |
| Depth |
435.0mm (17.1") |
507.0mm (20") |
| Weight |
13.66kg (30.1lbs) |
18.98kg (41.8lbs) |
| Enclosure |
Bass reflex |
Bass Reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
1 Year |
2 Years |
| Labor Warranty |
1 Year |
2 Years |