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JBL A125C Review
JBL Stage A125C

Main Features

  • 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:17.53 lbs / 7.97 kg
  • Dimensions(HxWxD): 7-1/2"x18-1/2"x9-1/2" / 191.0 x 470.0 x 242.0mm
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JBL Stage A125C Review
JBL Stage A125C JBL Stage A125C
See at AMAZON

JBL Stage A125C is a 2-way Passive Passive Radiator Center Channel speaker by JBL. Center channel speaker is an important component of a home theater system set-up as it delivers the listener significant part of the on-screen dialogue from your television. It features a 1" dome with HDI (High Definition Imaging) waveguide technology Tweeter and 2 x 5.24" polycellulose Woofer. The speaker has a frequency range of 75-40k Hz and a sensitivity of 88 dB. JBL Stage A125C has an MSRP of 350$ but can often be found around 120$ per pair.

Room Size Suitability

The size of the room where you plan to use the JBL Stage A125C is a crucial factor in your decision. We have assessed its suitability for various room sizes based on its dimensions and maximum power output:

Listening Environment* Suitability
Near-fieldPoor
Small RoomAverage
Mid-size RoomGood
Large RoomAverage
Very Large RoomPoor

(* 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.)

JBL's Stage Series of Loudspeakers

A125C is a member of JBL's Stage series of Passive speakers. Below you can see the main specs of these speakers.

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


**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.

Frequency Response of the JBL Stage A125C Speaker

JBL Stage A125C has a Frequency response range of 75-40k Hz at ±3dB and Power Range of 20-150 watts. Here we have a comparison of how A125C's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.

Low Frequency
Center Channel Speakers
JBL Stage A125C
Min
Average
Max
High Frequency
Center Channel Speakers
JBL Stage A125C
Min
Average
Max

Impedance and Sensitivity

JBL Stage A125C's nominal impedance level is 6 ohms and has a sensitivity of 88 dB.

Sensitivity
Center Channel Speakers
JBL Stage A125C
Min
Average
Max

Nominal Impedance of the 6 Ohms makes the JBL Stage A125C a relatively difficult to drive speaker compared to more frequently found 8 ohms speakers from nominal Impedance perspective.

Sensitivity

88dB of the JBL Stage A125C is an average sensitivity for stereo speaker so it is neither easy nor difficult to drive Sensitivity wise.

Check the amplifiers that are in a similar price range to the JBL Stage A125C:

  • Integrated Amps under 300 USD
  • Integrated Amps under 500 USD
  • Integrated Amps under 750 USD
  • All Integrated Amplifiers

Input Type

A125C features 5-Way post type connectors. Bi-amping and Bi-wiring are not possible.
JBL Stage A125C Back View
JBL Stage A125C Back View

JBL Stage A125C External Dimensions and Weight

JBL Stage A125C has external dimensions of (Height x Width x Depth) 7-1/2 x 18-1/2 x 9-1/2inch (191.0 x 470.0 x 242.0mm ).

Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited. The base area of JBL Stage A125C is approximately 1137.4cm2 / 176.3inch2.

Weight

The JBL Stage A125C weighs 7.97kg / 17.5lbs per piece. Here is a comparison of how A125C's weight compares with the average, max and min weights in its class.

Weight
All Center Channel Speakers
JBL Stage A125C
Min
Average
Max
Weight
Center Channel Speakers under $500
JBL Stage A125C
Min
Average
Max
JBL Stage A125C  on a Stand
JBL Stage A125C on a Stand

How does the JBL Stage A125C compare to the JBL Stage A135C?

One of the natural alternative to the JBL Stage A125C is the A135C which is located one step higher in JBL's Passive Center Channel selection.

Check the Detailed Comparison of JBL Stage A125C vs A135C for more details.

Cabinet type and Materials

JBL Stage A125C has a Passive Radiator type cabinet.

Speaker Feet

JBL Stage A125C comes with the parts below which you can use to secure your loudspeaker on the surface that you are putting on:
  • 4 Leveling feet
  • 4 Rubber feet
  • It is always recommended to use some kind of feet under all types of speakers. Besides limiting the movement of the speakers, it also compensates for non-flat surfaces and limits the contact surface area of the speaker. Rubber based feet also help isolating the vibrations within certain frequency ranges.

    Available colors

    JBL Stage A125C is available in Black.

    Does the JBL Stage A125C come with a Grille?

    A125C comes with grilles. The purpose of the grille is to protect the delicate driver elements from external impacts while still allowing the sound to pass as clearly as possible.

    JBL Stage A125C  with Grille
    JBL Stage A125C with Grille

    What's in the Box of JBL Stage A125C?

    Here are the items that are included inside the box of A125C:
  • Center-channel loudspeaker
  • Grille
  • 4 Leveling feet
  • 4 Rubber feet
  • Owners Manual
  • Warranty Card
  • Recommended Accessories

    Here is a list of accessories that we think you may need for the JBL Stage A125C.

    • Speaker Cable and Connectors
      • Speaker Cables with Banana Plugs: If you know the lenght of the cable you need, this is the easier option to connect your speakers with your amp.
      • Speaker Cables without Connectors: If you are not sure about the lenght or need longer than standard cables with plugs, choose this option.
      • Banana Connectors and Plugs: If you chose the cables without connectors option or already have some cable around, pick the banana plugs separately.
    • Vibration Isolators: IsoAcoustics isolators more affordable options too.
    • Acoustic Panels and Treatments: Your room is as important as your stereo equipment so acoustic treatments goes a long way in improving the overall performance.

    Warranty

    5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.

    JBL Stage A125C Alternatives in Passive Center Channel Speakers
    Model Type Sensitivity Impedance Frequency
    JBL Stage A135C
    Compare
    2-way 90 dB 6 ohms 75-40k Hz
    JBL A120
    Compare
    2-way 86 dB 6 ohms 60-40k Hz
    JBL A130
    Compare
    2-way 86 dB 6 ohms 55-40k Hz
    JBL Stage A190
    Compare
    2-way 91 dB 6 ohms 36-40k Hz
    Polk ES30
    Compare
    2-way 89 dB 8 ohms 55-40k Hz
    JBL Stage A170
    Compare
    2-way 89 dB 6 ohms 44-40k Hz
    Sony SS-CS8
    Compare
    2-way 86 dB 6 ohms 55-25k Hz
    JBL Stage A180
    Compare
    2-way 90 dB 6 ohms 40-40k Hz
    Frequently Asked Questions about JBL Stage A125C
    What is the External Dimensions of JBL Stage A125C
    What is the Speaker Sensitivity of JBL Stage A125C
    is the JBL Stage A125C an easy to drive speaker?

    JBL Stage A125C Detailed Specifications

    General
    BrandJBL
    Full Model NameJBL Stage A125C
    Speaker Type2-way Center Channel
    Power Range20-150 watts
    Sensitivity88 dB
    Impedance6 ohms
    Frequency Response75-40k Hz
    DRIVERS
    Woofer Size5.24-inch
    Woofer Compositionpolycellulose
    Tweeter Size1-inch
    Tweeter Typedome with HDI (High Definition Imaging) waveguide technology
    Midrange SizeN/A-inch

    CONNECTIONS
    Connector Type5-Way post
    Biamp InputsNo
    PHYSICAL SPECS
    Height191.0mm ( 7-1/2-inch)
    Width470.0mm ( 18-1/2-inch)
    Depth242.0mm ( 9-1/2-inch)
    Height191.0mm ( 7-1/2-inch)
    Weight7.97kg ( 17.53 lbs)
    EnclosurePassive Radiator
    Available ColorsBlack
    Mounting BracketNo
    GrilleYes
    Moisture ResistanceNo
    OTHER
    Handheld RemoteNo
    Parts Warranty5 Years
    Labor Warranty5 Years
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