In this review, we will be comparing two different type of speakers by JBL. JBL Stage A170 is a Floor-standing speaker whereas the A125C is a Center Channel speaker.
Let's have a brief look at the main features
of JBL Stage A170 and JBL Stage A125C first before getting into our more
detailed comparison.
JBL Stage A170 Key Specs
- 2-way Design
- 1" HDI (High Definition Imaging) waveguide Tweeter
- 2 x 5.25" Polycellulose Woofer
- 44-40k Hz Frequency Response
- 89 dB Sensitivity
- Impedance: 6ohms
- Power Range:20-200watts
- Weight:14.37kg
- Dimensions (H x W x D): 977.0" x 10-1/2" x 13"( 977.0 x 267.0 x 331.0mm )
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 )
A170 and A125C are members of JBL's Stage series of speakers. Below you can find the loudspeakers from this series.
What size room are the JBL Stage A170 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 A170 |
JBL Stage A125C |
| Near-field |
Bad |
Poor |
| Small Room |
Poor |
Average |
| Mid-size Room |
Good |
Good |
| Large Room |
Good |
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 A170 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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Drivers
Both A170 and A125C are 2-way speakers.
| Driver |
JBL Stage A170 |
JBL Stage A125C |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 5.25-inch
|
2 x 5.24-inch
|
A170 features a 1" aluminum HDI (High Definition Imaging) waveguide Tweeter and 2 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
A170 has a frequency range of 44-40k Hz whereas A125C has a frequency range of 75-40k Hz. With a minimum frequency of 44Hz, the A170 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 Floor-standing class in our database.
Low Frequency
Floor-standing Speakers
High Frequency
Floor-standing 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
A170 and A125C have the same Impedance of 6 ohms but where they differ is the sensitivity levels. A170 sensitivity is rated at 89 dB and the A125C's is at 88 dB. This 1 dB difference makes the JBL Stage A170 a more sensitive speaker compared to JBL Stage A125C, hence will play louder with the same amount of watts.
Sensitivity
Floor-standing 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.
A170 can handle a max power of 200 watts RMS from the amp the whereas A125C has a max power handling value of 150 watts RMS, 50 watts less than the A170.
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
A170 features 5-Way post posts which make bi-amping or bi-wiring possible. A125C has a 5-Way post which doesn't 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 A170's and JBL Stage A125C's external dimensions. JBL Stage A170 has external dimensions of 977.0 x 267.0 x 331.0mm ( 38-7/16 x 10-1/2 x 13inch) 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) .
JBL Stage A125C is 786mm shorter and 89mm less deeper than JBL Stage A170 but it is also 203mm wider.
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 A170 is approximately 883.8cm2 / 137.0inch2 and base area of the JBL Stage A125C is approximately 1137.4cm2 / 176.3inch2. The A170 requires 22% 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 A170?
Here are the items that are included inside the box of A170:
Floorstanding loudspeakerGrille4 Outriggers4 Rubber feet4 Spikes8 Screws2 Terminal jumpers (pre-installed)Owners ManualWarranty Card
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
Max Input Power 
Sensitivity 
Woofer Size 
Bi-Amping and Bi-Wiring 
Base Surface Area 
Height 
Price per pair*