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JBL Stage A135C vs JBL Stage A125C Comparison

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JBL Stage A135C

Passive Center Channel | 75-40k Hz

JBL Stage A135C
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JBL Stage A125C

Passive Center Channel | 75-40k Hz

JBL Stage A125C
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JBL Stage A135C JBL Stage A135C
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JBL Stage A125C JBL Stage A125C
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JBL Stage A135C
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JBL Stage A125C
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JBL Stage A135C vs JBL Stage A125C Speaker Comparison

In this review, we will be comparing A135C and A125C, two Passive Center Channel speakers by JBL

Let's have a brief look at the main features of JBL Stage A135C and JBL Stage A125C first before getting into our more detailed comparison.

JBL Stage A135C Key Specs

  • 2-way Design
  • 1" dome with HDI (High Definition Imaging) waveguide technology Tweeter
  • 6 x 3" polycellulose Woofer
  • 75-40k Hz Frequency Response
  • 90 dB Sensitivity
  • Impedance: 6ohms
  • Power Range:20-150watts
  • Weight:7.46kg
  • Dimensions (H x W x D): 105.0" x 29-3/8" x 7-5/16"( 105.0 x 747.0 x 186.0mm )

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 )

A135C and A125C are members of JBL's Stage series of speakers. Below you can find the loudspeakers from this series.

JBL Stage Series History
Model Body Frequency SensitivityImpedance Woofer
JBL A130
  
Bookshelf 55-40k Hz 86 dB6Ω 1 x 5.25"
JBL A120
  
Bookshelf 60-40k Hz 86 dB6Ω 1 x 4.5"
JBL Stage A190
  
Floor-standing 36-40k Hz 91 dB6Ω 2 x 8"
JBL Stage A180
  
Floor-standing 40-40k Hz 90 dB6Ω 2 x 6.5"
JBL Stage A135C
Center Channel 75-40k Hz 90 dB6Ω 6 x 3"
JBL Stage A170
  
Floor-standing 44-40k Hz 89 dB6Ω 2 x 5.25"
JBL Stage A125C
Center Channel 75-40k Hz 88 dB6Ω 2 x 5.24"
JBL Stage 280W
  
In-wall 42-25kHz 90 dB8Ω 1 x 8"
JBL Stage 260W
  
In-wall 50-25kHz 87 dB8Ω 1 x 6.5"
JBL Stage 250WL
  
In-wall 52-25kHz 90 dB8Ω 2 x 5.25"

What size room are the JBL Stage A135C 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 A135C 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 A135C 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.


**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

Both A135C and A125C are 2-way speakers.

Driver JBL Stage A135C JBL Stage A125C
Driver Setup 2-way 2-way
Tweeter 1-inch 1-inch
Midrange - -
Woofer 6 x 3-inch 2 x 5.24-inch

A135C features a 1" aluminum dome with HDI (High Definition Imaging) waveguide technology Tweeter and 6 x 3" 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

A135C and A125C has exactly the same frequency range of 75-40k Hz.

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 Center Channel class in our database.

Low Frequency

Center Channel Speakers

A135C
A125C
Min
Average
Max
High Frequency

Center Channel Speakers

JBL Stage A135C
JBL Stage A125C
Min
Average
Max

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

A135C and A125C have the same Impedance of 6 ohms but where they differ is the sensitivity levels. A135C sensitivity is rated at 90 dB and the A125C's is at 88 dB. This 2 dB difference makes the JBL Stage A135C a more sensitive speaker compared to JBL Stage A125C, hence will play louder with the same amount of watts.

Sensitivity

Center Channel Speakers

A135C
A125C
Min
Average
Max

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.

A135C 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

A135C 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 A125C5-Way post Terminals
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 A135C's and JBL Stage A125C's external dimensions. JBL Stage A135C has external dimensions of 105.0 x 747.0 x 186.0mm ( 4-1/8 x 29-3/8 x 7-5/16inch) 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 A135C is 86mm shorter and 56mm less deeper than JBL Stage A125C but it is also 277mm 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 A135C is approximately 1389.4cm2 / 215.4inch2 and base area of the JBL Stage A125C is approximately 1137.4cm2 / 176.3inch2. The A135C requires 22% more surface area than the A125C which gives it a small disadvantage on placement in tight spaces.

Weight Comparison

The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The JBL Stage A135C weighs 7.46kg / 16.4lbs and the JBL Stage A125C weighs 7.97kg / 17.5lbs. This makes the A125C 7% heavier than the A135C.

Here is a comparison of how A135C and A125C's weights compare with the average, max and min weights in Passive Center Channel class.

Weight
All Center Channel Speakers
JBL Stage A135C
JBL Stage A125C
Min
Average
Max

What's in the Box of JBL Stage A135C?

Here are the items that are included inside the box of A135C:
  • Center-channel loudspeaker
  • Grille
  • 4 Leveling feet
  • 4 Rubber feet
  • Owners Manual
  • Warranty Card
  • What's in the Box of JBL Stage A125C?

    Here are the items that come with the A125C:
  • Center-channel loudspeaker
  • Grille
  • 4 Leveling feet
  • 4 Rubber feet
  • Owners Manual
  • Warranty Card

  • Reasons to choose JBL Stage A135C over JBL Stage A125C
    Sensitivity 90 dB vs 88 dB Play louder with same amount of amplification power
    Number of Woofers 6 vs 2 More woofers
    Height 105mm vs 191mm Easier to fit in smaller spaces
    Price per pair* 300USD vs 350USD costs less (*prices may change depending on the seller, location and time)

    Reasons to choose JBL Stage A125C over JBL Stage A135C

    Woofer Size 5.24 inches vs 3 inches Larger woofer
    Base Surface Area 1137cm2 vs 1389cm2 Takes less floor space
    JBL Stage A135C vs JBL Stage A125C Specs Table
    Detailed comparison of specifications
    General JBL Stage A135C JBL Stage A125C
    Brand JBL JBL
    Speaker Type Low-profile center channel speaker Center channel speaker
    Power Range 20-150 watts 20-150 watts
    Sensitivity 90 dB 88 dB
    Impedance 6 ohms 6 ohms
    Frequency Response 75-40k Hz 75-40k Hz
    Drivers
    Woofer Quantity 6 2
    Woofer Size 3" 5.24"
    Woofer Composition polycellulose polycellulose
    Tweeter Size 1" 1"
    Tweeter Type dome with HDI (High Definition Imaging) waveguide technology dome with HDI (High Definition Imaging) waveguide technology
    Aimable Tweeter No No
    Midrange Driver N/A" N/A"
    Firing Direction side n/a
    Physical Specs
    Height 105.0mm (4.1") 191.0mm (7.5")
    Width 747.0mm (29.4") 470.0mm (18.5")
    Depth 186.0mm (7.3") 242.0mm (9.5")
    Weight 7.46kg (16.4lbs) 7.97kg (17.5lbs)
    Enclosure Bass Reflex Passive Radiator
    Available Colors Black Black
    Grille Yes Yes
    Moisture Resistancy No No
    Connections
    Biamp Inputs No No
    Other
    Parts Warranty 5 Years 5 Years
    Labor Warranty 5 Years 5 Years

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