In this review, we will be comparing S10 and Bronze 2, two Passive Bookshelf speakers from Polk Audio and Monitor Audio.
Let's have a brief look at the main features
of Polk S10 and Monitor Audio Bronze 2 first before getting into our more
detailed comparison.
| Key Specs | Polk S10 | Monitor Audio Bronze 2 |
|---|
| Brand | Polk Audio
United States · founded 1972 | Monitor Audio
United Kingdom · founded 1972 |
|---|
| Design | 2-way | 2-way |
|---|
| Tweeter | 1" Soft-Dome | 1" Dome |
|---|
| Woofer | 4" Mica-reinforced polypropylene | 6.5" C-CAM |
|---|
| Frequency response | 67-40k Hz | 42-30k Hz |
|---|
| Sensitivity | 87 dB | 90 dB |
|---|
| Impedance | 8 ohms | 8 ohms |
|---|
| Power range | 20-100 watts | 30-100 watts |
|---|
| Weight | 2.73kg / 6lbs | 5.30kg / 11.7lbs |
|---|
| Dimensions (H x W x D) | 8.4" x 5.0" x 6.1"
214.0 x 127.0 x 155.0mm | 13.7" x 7.2" x 11.0"
350.0 x 185.0 x 281.0mm |
|---|
What size room are the Polk S10 and Monitor Audio Bronze 2 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* |
Polk S10 |
Monitor Audio Bronze 2 |
| 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.)
The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.
Drivers
Both S10 and Bronze 2 are 2-way speakers.
Polk S10Monitor Audio Bronze 2
TweeterWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
Polk S10 |
Monitor Audio Bronze 2 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 4-inch
|
1 x 6.5-inch
|
S10 features a 1" Terylene Soft-Dome Tweeter and 1 x 4" Mica-reinforced polypropylene Woofer with a Crossover frequency at 2500Hz. On the other hand, the Bronze 2 features a 1" Dome Tweeter and 1 x 6.5" C-CAM Woofer with a Crossover frequency at 3100Hz.
Frequency Response
S10 has a frequency range of 67-40k Hz whereas Bronze 2 has a frequency range of 42-30k 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 S10's min frequency of 67Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
Neither pair reaches down to 20Hz, the usual definition of full-range, which is normal for speakers of this size. If you want the bottom octave for movies or bass-heavy music, add a subwoofer to whichever you choose. Visit our Powered Subwoofers section to find out more about the available options.
Impedance and Sensitivity
S10 and Bronze 2 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. S10 sensitivity is rated at 87 dB and the Bronze 2's is at 90 dB. This 3 dB difference makes the Monitor Audio Bronze 2 a more sensitive speaker compared to Polk S10, hence will play louder with the same amount of watts.
Sensitivity
Bookshelf Speakers
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. Staying
within that range gives nominal performance; driving the speaker beyond its maximum wattage can damage it.
Both handle the same maximum of 100 watts RMS, though S10 is rated 20-100 watts and Bronze 2 30-100 watts.
Note that higher power handling does not make a speaker louder: that depends mainly on
sensitivity and impedance. The calculator below shows how loud each of these actually plays
on a real amplifier.
Which plays louder on your amplifier?
Starting with a popular amplifier - change it to the one you own, or any you are
considering, and watch both numbers move.
Input Type and Bi-Amping / Bi-Wiring
Bronze 2 features Post posts which make bi-amping or bi-wiring possible. S10 has a 5-way post which doesn't feature bi-amping/bi-wiring.
Polk S10's 5-way post terminals
Cabinet Type and Port Position
S10 has a rear firing port whereas Bronze 2 has a front firing ports. Monitor Audio Bronze 2's front-firing port gives more flexibility in placement in regards to proximity to walls compared to Polk S10 with its rear-firing port.
Physical Specs
The size of a speaker can sometimes be an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare Polk S10's and Monitor Audio Bronze 2's external dimensions. Polk S10 has external dimensions of 214.0 x 127.0 x 155.0mm (8.4 x 5.0 x 6.1inch) whereas Monitor Audio Bronze 2 has external dimensions of 350.0 x 185.0 x 281.0mm (13.7 x 7.2 x 11.0inch).
Monitor Audio Bronze 2 is clearly the larger of the two speakers. Its body is 58mm wider, 136mm taller and 126mm deeper than Polk S10.
Size, drawn to scale
Both speakers and both views share one scale, so everything here is directly comparable. Hover a box for its dimensions.
One scale for both, standing on the same surface and pushed back to the same wall, so the deeper one visibly sticks out further.
Monitor Audio Bronze 2 needs about 164% more floor or shelf area. Monitor Audio Bronze 2 is 126mm deeper, so it stands that much further out from the wall. Monitor Audio Bronze 2 is 136mm taller.
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 Polk S10 is approximately 196.9cm2 / 30.5inch2 and base area of the Monitor Audio Bronze 2 is approximately 519.9cm2 / 80.6inch2. The S10 requires 62% less surface area than the Bronze 2 which gives it a small advantage 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 Polk S10 weighs 2.73kg / 6lbs and the Monitor Audio Bronze 2 weighs 5.30kg / 11.7lbs. This makes the Bronze 2 94% heavier than the S10.
Here is a comparison of how S10 and Bronze 2's weights compare with the average, max and min weights in Passive Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of Polk S10?
Here are the items that are included inside the box of S10:
- 2 Bookshelf loudspeakers
- 2 Grille (attached)
- 8 Self-adhesive rubber feet
- Wall-mount template
- Owners Manual
- Online Product Registration
What's in the Box of Monitor Audio Bronze 2?
Here are the items that come with the Bronze 2:
- 2 Bookshelf loudspeakers
- 2 Grilles
- 2 Foam port plugs
- Hex-key
- Owner's Manual
- Important Safety Instructions
 High Frequency Response |
40k Hz
vs
30k Hz
|
Generates higher frequency |
 Mounting Bracket |
Yes
vs
No
|
Allows mounting on walls |
 Height |
214mm
vs
350mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
196cm2
vs
519cm2
|
Takes less floor space |
 Price per pair* |
199USD
vs
379USD
|
costs less (*prices may change depending on the seller, location and time) |
 Sensitivity |
90 dB
vs
87 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
6.5 inches
vs
4 inches
|
Larger woofer |
|
Low Frequency Response |
42 Hz
vs
67 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 |
| General |
Polk Audio Signature S10 |
Monitor Audio Bronze 2 |
| Brand |
Polk Audio |
Monitor Audio |
| Speaker Type |
Satellite speakers |
Bookshelf speakers |
| Power Range |
20-100 watts |
30-100 watts |
| Sensitivity |
87 dB |
90 dB |
| Impedance |
8 ohms |
8 ohms |
| Frequency Response |
67-40k Hz |
42-30k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
4" |
6.5" |
| Woofer Composition |
Mica-reinforced polypropylene |
C-CAM |
| Woofer Surround Material |
Butyl rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Soft-Dome |
Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
2500Hz |
3100Hz |
| Firing Direction |
rear |
front |
Physical Specs |
|
|
| Height |
214.0mm (8.4") |
350.0mm (13.8") |
| Width |
127.0mm (5") |
185.0mm (7.3") |
| Depth |
155.0mm (6.1") |
281.0mm (11.1") |
| Weight |
2.73kg (6lbs) |
5.30kg (11.7lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
Meddite MDF |
MDF/Wood-grain vinyl |
| Available Colors |
Black |
Walnut, White, Rosemah, Black |
| Mounting Bracket |
Keyhole |
No |
| Recommended Stand Height |
28-31" |
30-31" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
Yes |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |
These sit in different price classes - Monitor Audio Bronze 2 costs roughly 1.9x what Polk S10 does. Expect it to lead on paper; the question is whether the gap is audible enough in your room to be worth it.
| Area | Better | Why |
|---|
| Bass | B | Monitor Audio Bronze 2 digs deeper - 42Hz against 67Hz. |
| Amplifier needs | B | Monitor Audio Bronze 2 is more sensitive (90dB vs 87dB), so it goes louder on the same amplifier. |
| Headroom | evenly matched | Similar power handling (100W vs 100W). |
| Size | depends | Polk S10 is easier to place; Monitor Audio Bronze 2 is bigger, which usually goes with fuller bass. Your room decides. |
| Expandability | B | Monitor Audio Bronze 2: bi-amping. Monitor Audio Bronze 2 sits in a wider range (11 models), so a matched surround system is easier later. |
| Price | A | Polk S10 is cheaper - $199 against $379, about 47% less; arguably a different class. |
A Polk S10 B Monitor Audio Bronze 2
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both speakers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
The usual trade-off: Monitor Audio Bronze 2 measures better, Polk S10 costs about about 90% more% less. Whether that gap is worth the money is the call only you can make - and in a normal room it is often smaller than the numbers suggest. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 67Hz anyway, which makes the cheaper Polk S10 much easier to justify. In a large or open-plan room, Monitor Audio Bronze 2 has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, Polk S10 is the easier speaker to get right.
And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.