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Monitor Audio Bronze 2 vs Polk S15 Comparison

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Monitor Audio Bronze 2

Passive Bookshelf | 42-30k Hz

Monitor Audio Bronze 2
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Polk S15

Passive Bookshelf | 50-40k Hz

Polk Audio Signature S15
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Monitor Audio Bronze 2 Monitor Audio Bronze...
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Polk S15 Polk S15
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Monitor Audio Bronze...
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Polk S15
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Monitor Audio Bronze 2 vs Polk S15 Speaker Comparison

In this review, we will be comparing Bronze 2 and S15, two Passive Bookshelf speakers from Monitor Audio and Polk Audio.

Let's have a brief look at the main features of Monitor Audio Bronze 2 and Polk S15 first before getting into our more detailed comparison.

Monitor Audio Bronze 2 Key Specs

  • 2-way Design
  • 1" Dome Tweeter
  • 6.5" C-CAM Woofer
  • 42-30k Hz Frequency Response
  • 90 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:30-100watts
  • Weight:5.30kg
  • Dimensions (H x W x D): 350.0" x 7.2" x 11.0"( 350.0 x 185.0 x 281.0mm )

Polk S15 Key Specs

  • 2-way Design
  • 1" Dome Tweeter
  • 5.25" Mica-reinforced polypropylene Woofer
  • 50-40k Hz Frequency Response
  • 88 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:20-100watts
  • Weight:5.90kg
  • Dimensions (H x W x D): 304.8" x 7.4" x 10.2"( 304.8 x 190.0 x 260.4mm )

What size room are the Monitor Audio Bronze 2 and Polk S15 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 2 Polk S15
Near-field Average Average
Small Room Good Good
Mid-size Room Average Average
Large Room Poor Poor
Very Large Room Bad Bad

(* 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 2 and Polk S15 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 2 and S15 are 2-way speakers.

Driver Monitor Audio Bronze 2 Polk S15
Driver Setup 2-way 2-way
Tweeter 1-inch 1-inch
Midrange - -
Woofer 1 x 6.5-inch 1 x 5.25-inch

Bronze 2 features a 1" Dome Tweeter and 1 x 6.5" C-CAM Woofer with a Crossover frequency at 3100Hz. On the other hand, the S15 features a 1" Terylene Dome Tweeter and 1 x 5.25" Mica-reinforced polypropylene Woofer with a Crossover frequency at 2500Hz.

Frequency Response

Bronze 2 has a frequency range of 42-30k Hz whereas S15 has a frequency range of 50-40k Hz. With a minimum frequency of 42Hz, the Bronze 2 can go significantly deeper on the low side and provide stronger bass compared to the S15's min frequency of 50Hz.

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

Bronze 2
S15
Min
Average
Max
High Frequency

Bookshelf Speakers

Monitor Audio Bronze 2
Polk S15
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 2 and S15 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Bronze 2 sensitivity is rated at 90 dB and the S15's is at 88 dB. This 2 dB difference makes the Monitor Audio Bronze 2 a more sensitive speaker compared to Polk S15, hence will play louder with the same amount of watts.

Sensitivity

Bookshelf Speakers

Bronze 2
S15
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.

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 2 features Post posts which make bi-amping or bi-wiring possible. S15 has a Pair of Binding Posts - Gold Plated which doesn't feature bi-amping/bi-wiring.

Cabinet Type and Port Position

Bronze 2 has a front firing port whereas S15 has a rear firing ports. Monitor Audio Bronze 2's front-firing port gives more flexibility in placement in regards to proximity to walls compared to Polk S15 with its rear-firing port.

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 2's and Polk S15's external dimensions. Monitor Audio Bronze 2 has external dimensions of 350.0 x 185.0 x 281.0mm ( 13.7 x 7.2 x 11.0inch) whereas Polk S15 has external dimensions of 304.8 x 190.0 x 260.4mm ( 12.0 x 7.4 x 10.2inch) .

Polk S15 is 45.2mm shorter and 20.6mm less deeper than Monitor Audio Bronze 2 but it is also 5mm 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 2 is approximately 519.9cm2 / 80.6inch2 and base area of the Polk S15 is approximately 494.8cm2 / 76.7inch2. The Bronze 2 requires 5% more surface area than the S15 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 Monitor Audio Bronze 2 weighs 5.30kg / 11.7lbs and the Polk S15 weighs 5.90kg / 13lbs. This makes the S15 11% heavier than the Bronze 2.

Here is a comparison of how Bronze 2 and S15's weights compare with the average, max and min weights in Passive Bookshelf class.

Weight
All Bookshelf Speakers
Monitor Audio Bronze 2
Polk S15
Min
Average
Max

What's in the Box of Monitor Audio Bronze 2?

Here are the items that are included inside the box of Bronze 2:
  • 2 Bookshelf loudspeakers
  • 2 Grilles
  • 2 Foam port plugs
  • Hex-key
  • Owner's Manual
  • Important Safety Instructions
  • What's in the Box of Polk S15?

    Here are the items that come with the S15:
  • 2 Bookshelf loudspeakers
  • 2 Grille (attached)
  • 8 Self-adhesive rubber feet
  • Wall-mount template
  • Owners Manual
  • Online Product Registration

  • Reasons to choose Monitor Audio Bronze 2 over Polk Audio Signature S15
    Sensitivity 90 dB vs 88 dB Play louder with same amount of amplification power
    Woofer Size 6.5 inches vs 5.25 inches Larger woofer
    Low Frequency Response 42 Hz vs 50 Hz Generates deeper bass
    Bi-Amping and Bi-Wiring Yes vs No Allows bi-amping and bi-wiring connections
    Port Position Front vs Rear Gives more flexibility placing close to walls

    Reasons to choose Polk Audio Signature S15 over Monitor Audio Bronze 2

    High Frequency Response 40k Hz vs 30k Hz Generates higher frequency
    Mounting Bracket Yes vs No Allows mounting on walls
    Height 304mm vs 350mm Easier to fit in smaller spaces
    Base Surface Area 494cm2 vs 519cm2 Takes less floor space
    Monitor Audio Bronze 2 vs Polk S15 Specs Table
    Detailed comparison of specifications
    General Monitor Audio Bronze 2 Polk Audio Signature S15
    Brand Monitor Audio Polk Audio
    Speaker Type Bookshelf speakers Bookshelf speakers
    Power Range 30-100 watts 20-100 watts
    Sensitivity 90 dB 88 dB
    Impedance 8 ohms 8 ohms
    Frequency Response 42-30k Hz 50-40k Hz
    Drivers
    Woofer Quantity 1 1
    Woofer Size 6.5" 5.25"
    Woofer Composition C-CAM Mica-reinforced polypropylene
    Woofer Surround Material Rubber Butyl rubber
    Tweeter Size 1" 1"
    Tweeter Type Dome Dome
    Aimable Tweeter No No
    Midrange Driver No No
    Crossover Frequency 3100Hz 2500Hz
    Firing Direction front rear
    Physical Specs
    Height 350.0mm (13.8") 304.8mm (12")
    Width 185.0mm (7.3") 190.0mm (7.5")
    Depth 281.0mm (11.1") 260.4mm (10.3")
    Weight 5.30kg (11.7lbs) 5.90kg (13lbs)
    Enclosure Bass Reflex Bass Reflex
    Finish MDF/Wood-grain vinyl Meddite MDF
    Available Colors Walnut, White, Rosemah, Black Black, Walnut, Brown Walnut
    Mounting Bracket No Keyhole
    Recommended Stand Height 30-31" 24-30"
    Grille Yes Yes
    Moisture Resistancy No No
    Connections
    Biamp Inputs Yes No
    Other
    Parts Warranty 5 Years 5 Years
    Labor Warranty 5 Years 5 Years

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