SpeakerDecision
  • SPEAKERS by TYPE
    • Passive Bookshelf Speakers
    • Passive Floor-standing Speakers
    • Passive Center Channel Speakers
    • Passive In-wall Speakers
    • All Passive Speakers
    • Powered Subwoofers
    • Powered Stereo Speakers
  • AMPLIFIERS
  • SMART FIND

Monitor Audio Bronze C150 vs KEF Q550 Comparison

x
Speaker to replace
Change

Monitor Audio Bronze C150

Passive Center Channel | 66-30k Hz

Monitor Audio Bronze C150
CHECK PRICE
Change
    
KEF Q550

Passive Floor-standing | 58-28k Hz

KEF Q550
CHECK PRICE
Monitor Audio Bronze C150 Monitor Audio Bronze...
See at AMAZON
KEF Q550 KEF Q550
See at AMAZON
Monitor Audio Bronze...
See at AMAZON
KEF Q550
See at AMAZON
Monitor Audio Bronze C150 vs KEF Q550 Speaker Comparison

In this review, we will be comparing two different type of speakers . Monitor Audio Bronze C150 is a Center Channel speaker whereas the Q550 is a Floor-standing speaker.

Let's have a brief look at the main features of Monitor Audio Bronze C150 and KEF Q550 first before getting into our more detailed comparison.

Monitor Audio Bronze C150 Key Specs

  • 2-way Design
  • 1" vented dome with waveguide Tweeter
  • 5.25" aluminum Woofer
  • 66-30k Hz Frequency Response
  • 88 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:30-120watts
  • Weight:7.01kg
  • Dimensions (H x W x D): 167.0" x 17-13/16" x 8-15/16"( 167.0 x 453.0 x 228.0mm )

KEF Q550 Key Specs

  • 2-way Design
  • 11th Generation Uni-Q Driver
  • 1" Dome Tweeter
  • 2 x 5.25" Aluminum Woofer
  • 58-28k Hz Frequency Response
  • 87 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:15-130watts
  • Weight:14.55kg
  • Dimensions (H x W x D): 894.0" x 11-5/8" x 12-5/16"( 894.0 x 296.0 x 313.0mm )

Bronze C150 and Q550 are members of KEF's Q series of speakers. Below you can find the loudspeakers from this series.

Monitor Audio Q Series History
Model Body Frequency SensitivityImpedance Woofer
Monitor Audio Bronze C150
Center Channel 66-30k Hz 88 dB8Ω 1 x 5.25"

What size room are the Monitor Audio Bronze C150 and KEF Q550 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* Monitor Audio Bronze C150 KEF Q550
Near-field Poor Bad
Small Room Average Poor
Mid-size Room Good Good
Large Room Average Good
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 Monitor Audio Bronze C150 and KEF Q550 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 Bronze C150 and Q550 are 2-way speakers.

Driver Monitor Audio Bronze C150 KEF Q550
Driver Setup 2-way 2-way
Tweeter 1-inch 1-inch
Midrange - -
Woofer 1 x 5.25-inch 2 x 5.25-inch

Bronze C150 features a 1" aluminum vented dome with waveguide Tweeter and 1 x 5.25" aluminum Woofer . On the other hand, the Q550 features a 1" vented aluminum Dome Tweeter and 2 x 5.25" Aluminum Woofer with a Crossover frequency at 2500Hz.

Frequency Response

Bronze C150 has a frequency range of 66-30k Hz whereas Q550 has a frequency range of 58-28k Hz. With a minimum frequency of 58Hz, the Q550 can go significantly deeper on the low side and provide stronger bass compared to the Bronze C150's min frequency of 66Hz.

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

Bronze C150
Q550
Min
Average
Max
High Frequency

Center Channel Speakers

Monitor Audio Bronze C150
KEF Q550
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

Bronze C150 and Q550 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Bronze C150 sensitivity is rated at 88 dB and the Q550's is at 87 dB. This 1 dB difference makes the Monitor Audio Bronze C150 a more sensitive speaker compared to KEF Q550, hence will play louder with the same amount of watts.

Sensitivity

Center Channel Speakers

Bronze C150
Q550
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.

Bronze C150 can handle a max power of 130 watts RMS from the amp the whereas Bronze C150 has a max power handling value of 120 watts RMS , 10 watts less than the Q550.

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

Bronze C150 features Binding post type posts and Q550 has a Binding post type posts. None of these speakers feature bi-amping/bi-wiring.

Monitor Audio Bronze C150 Terminals
Monitor Audio Bronze C150's Binding 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 Monitor Audio Bronze C150's and KEF Q550's external dimensions. Monitor Audio Bronze C150 has external dimensions of 167.0 x 453.0 x 228.0mm ( 6-9/16 x 17-13/16 x 8-15/16inch) whereas KEF Q550 has external dimensions of 894.0 x 296.0 x 313.0mm ( 35-3/16 x 11-5/8 x 12-5/16inch) .

Monitor Audio Bronze C150 is 727mm shorter and 85mm less deeper than KEF Q550 but it is also 157mm 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 Monitor Audio Bronze C150 is approximately 1032.8cm2 / 160.1inch2 and base area of the KEF Q550 is approximately 926.5cm2 / 143.6inch2. The Bronze C150 requires 11% more surface area than the Q550 which gives it a small disadvantage on placement in tight spaces.

What's in the Box of Monitor Audio Bronze C150?

Here are the items that are included inside the box of Bronze C150:
  • Center-channel loudspeaker
  • Grille
  • 2 Terminal-jumpers (pre-installed)
  • 4 Self-adhesive rubber feet
  • Hex-key
  • Quick Start Guide
  • Important Safety Instructions
  • What's in the Box of KEF Q550?

    Here are the items that come with the Q550:
  • Floorstanding loudspeaker
  • 2 Outrigger feet
  • 4 Spikes
  • 6 Screws
  • 6 Washers
  • 4 Rubber inserts
  • Hex-key
  • Owners Manual
  • Warranty Information

  • Reasons to choose Monitor Audio Bronze C150 over KEF Q550
    Sensitivity 88 dB vs 87 dB Play louder with same amount of amplification power
    High Frequency Response 30k Hz vs 28k Hz Generates higher frequency
    Height 167mm vs 894mm Easier to fit in smaller spaces
    Price per pair* 395USD vs 1400USD costs less (*prices may change depending on the seller, location and time)

    Reasons to choose KEF Q550 over Monitor Audio Bronze C150

    Max Input Power 130 watts vs 120 watts Handle more power from your amplifier
    Number of Woofers 2 vs 1 More woofers
    Low Frequency Response 58 Hz vs 66 Hz Generates deeper bass
    Passive Radiator 2 x 5.25-inch vs None Increases the bass performance
    Dolby Atmos Drivers Optional vs No Dolby Atmos Compatibility
    Base Surface Area 926cm2 vs 1032cm2 Takes less floor space
    Monitor Audio Bronze C150 vs KEF Q550 Specs Table
    Detailed comparison of specifications
    General Monitor Audio Bronze C150 KEF Q550
    Brand Monitor Audio KEF
    Speaker Type Center channel speaker Floor-standing speaker
    Power Range 30-120 watts 15-130 watts
    Sensitivity 88 dB 87 dB
    Impedance 8 ohms 8 ohms
    Impedance n/a 3.5 ohms
    Frequency Response 66-30k Hz 58-28k Hz
    Drivers
    Woofer Quantity 1 2
    Woofer Size 5.25" 5.25"
    Woofer Composition aluminum Aluminum
    Woofer Surround Material n/a Rubber
    Tweeter Size 1" 1"
    Tweeter Type vented dome with waveguide Dome
    Aimable Tweeter No No
    Midrange Driver No No
    Crossover Frequency n/a 2500Hz
    Firing Direction n/a front
    Physical Specs
    Height 167.0mm (6.6") 894.0mm (35.2")
    Width 453.0mm (17.8") 296.0mm (11.7")
    Depth 228.0mm (9") 313.0mm (12.3")
    Weight 7.01kg (15.4lbs) 14.55kg (32lbs)
    Enclosure Acoustic Suspension Passive Radiator
    Finish n/a MDF/Wood-grain vinyl
    Available Colors Walnut Walnut
    Grille Yes n/a
    Moisture Resistancy No No
    Connections
    Biamp Inputs n/a No
    Other
    Parts Warranty 5 Years 5 Years
    Labor Warranty 5 Years 5 Years

    Most Popular Speakers
    Klipsch Reference R-51M
    Klipsch R-51M
    2-way | 93 dB | 8 ohms
    Wharfedale Elysian 2
    Wharfedale Elysian 2
    3-way | 89 dB | 4 ohms
    ELAC Debut 2.0 B6.2
    ELAC Debut 2.0 B6.2
    2-way | 87 dB | 6 ohms
    Bowers & Wilkins 606 S2 Anniversary Edition
    B&W 606 S2
    2-way | 88 dB | 8 ohms
    KEF Q150
    KEF Q150
    2-way | 86 dB | 8 ohms
    Klipsch Reference Premiere RP-500M
    Klipsch RP-500M
    2-way | 93 dB | 8 ohms
    Wharfedale EVO4.1
    Wharfedale EVO4.1
    2-way | 87 dB | 8 ohms
    Bowers & Wilkins 606
    B&W 606
    2-way | 88 dB | 8 ohms
    Copyright © 2025 by SpeakerDecision
    About Privacy Contact US Camera Decision

    Report a Correction