In this review, we will be comparing two different type of speakers by JBL. JBL Stage 250B is a Bookshelf speaker whereas the A125C is a Center Channel speaker.
Let's have a brief look at the main features
of JBL Stage 250B and JBL Stage A125C first before getting into our more
detailed comparison.
JBL Stage 250B Key Specs
- 2-way Design
- 1" Hard-Dome Tweeter
- 5.25" Polycellulose Woofer
- 55-25k Hz Frequency Response
- 86 dB Sensitivity
- Impedance: 6ohms
- Power Range:20-150watts
- Weight:5.64kg
- Dimensions (H x W x D): 321.0" x 7-15/16" x 9-1/2"( 321.0 x 202.0 x 242.0mm )
JBL Stage A125C Key Specs
- 2-way Design
- 1" dome with HDI (High Definition Imaging) waveguide technology Tweeter
- 2 x 5.24" polycellulose Woofer
- 75-40k Hz Frequency Response
- 88 dB Sensitivity
- Impedance: 6ohms
- Power Range:20-150watts
- Weight:7.97kg
- Dimensions (H x W x D): 191.0" x 18-1/2" x 9-1/2"( 191.0 x 470.0 x 242.0mm )
What size room are the JBL Stage 250B and JBL Stage A125C speakers good for?
The size of the room in which you are planning to use these loudspeakers is an important decision factor. Here we have compared their suitability to various sizes of environments considering their size and max power parameters:
| Listening Environment* |
JBL Stage 250B |
JBL Stage A125C |
| Near-field |
Poor |
Poor |
| Small Room |
Average |
Average |
| Mid-size Room |
Good |
Good |
| Large Room |
Average |
Average |
| Very Large Room |
Poor |
Poor |
(* Approximate Room sizes: Small < 100sq. ft / 9 m2, Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: > 400 sq. ft / 36 m2.
Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual listening experience changes depending on floor height, room shape, surface materials, listening position, speaker locations, etc.)
In the following sections, we will get into more detail in order to better understand how the JBL Stage 250B and JBL Stage A125C compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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through my links. As an Amazon Associate I earn from qualifying purchases.
Drivers
Both Stage 250B and A125C are 2-way speakers.
| Driver |
JBL Stage 250B |
JBL Stage A125C |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5.25-inch
|
2 x 5.24-inch
|
Stage 250B features a 1" Hard-Dome Tweeter and 1 x 5.25" Polycellulose Woofer . On the other hand, the A125C features a 1" aluminum dome with HDI (High Definition Imaging) waveguide technology Tweeter and 2 x 5.24" polycellulose Woofer .
Frequency Response
Stage 250B has a frequency range of 55-25k Hz whereas A125C has a frequency range of 75-40k Hz. With a minimum frequency of 55Hz, the Stage 250B can go significantly deeper on the low side and provide stronger bass compared to the A125C's min frequency of 75Hz.
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 Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf Speakers
None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.
Impedance and Sensitivity
Stage 250B and A125C have the same Impedance of 6 ohms but where they differ is the sensitivity levels. Stage 250B sensitivity is rated at 86 dB and the A125C's is at 88 dB. This 2 dB difference makes the JBL Stage A125C a more sensitive speaker compared to JBL Stage 250B, hence will play louder with the same amount of watts.
Sensitivity
Bookshelf Speakers
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. While using an amplifier within this range ensures the nominal performance , inputting a power that is higher than the max wattage can result in a damaged speaker.
Stage 250B and A125C has the same power range of 20-150 watts.
Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker
compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters
such as Impedance, sensitivity and system efficiencies.
Input Type and Bi-Amping / Bi-Wiring
Stage 250B features 5-Way post type posts and A125C has a 5-Way post type posts. None of these speakers feature bi-amping/bi-wiring.
JBL Stage A125C's 5-Way post terminals
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 250B's and JBL Stage A125C's external dimensions. JBL Stage 250B has external dimensions of 321.0 x 202.0 x 242.0mm ( 12-5/8inch x 7-15/16inch x 9-1/2inch ) whereas JBL Stage A125C has external dimensions of 191.0 x 470.0 x 242.0mm ( 7-1/2 x 18-1/2 x 9-1/2inch) .
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 250B is approximately 488.8cm2 / 75.8inch2 and base area of the JBL Stage A125C is approximately 1137.4cm2 / 176.3inch2. The Stage 250B requires 57% less surface area than the A125C which gives it a small advantage on placement in tight spaces.
What's in the Box of JBL Stage 250B?
Here are the items that are included inside the box of Stage 250B:
2 Bookshelf loudspeakers 2 Grilles 8 Self-adhesive rubber pads Quick Start Guide Important Safety Instructions
What's in the Box of JBL Stage A125C?
Here are the items that come with the A125C:
Center-channel loudspeakerGrille4 Leveling feet4 Rubber feetOwners ManualWarranty Card
Woofer Size 
Base Surface Area 
Sensitivity 
High Frequency Response 
Price per pair*