In this review, we will be comparing ES15 and Monitor SE Atom, two Passive Bookshelf speakers from Polk Audio and Paradigm.
Let's have a brief look at the main features
of Polk ES15 and Paradigm SE Atom first before getting into our more
detailed comparison.
| Key Specs | Polk ES15 | Paradigm SE Atom |
|---|
| Brand | Polk Audio
United States · founded 1972 | Paradigm
Canada · founded 1982 |
|---|
| Design | 2-way | 2-way |
|---|
| Tweeter | 1" Soft-Dome | 1" Hard-Dome |
|---|
| Woofer | 5.25" Mica-reinforced polypropylene | 5.5" Mineral-filled polypropylene |
|---|
| Frequency response | 44-40k Hz | 61-21k Hz |
|---|
| Sensitivity | 85 dB | 89 dB |
|---|
| Impedance | 8 ohms | 8 ohms |
|---|
| Power range | 20-100 watts | 15-100 watts |
|---|
| Weight | 5.91kg / 13lbs | 5.45kg / 12lbs |
|---|
| Dimensions (H x W x D) | 12-1/16" x 7-9/16" x 10-3/16"
307.0 x 193.0 x 259.0mm | 12-3/4" x 7-1/8" x 10-7/8"
324.0 x 181.0 x 277.0mm |
|---|
What size room are the Polk ES15 and Paradigm SE Atom 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 ES15 |
Paradigm SE Atom |
| 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 ES15 and Monitor SE Atom are 2-way speakers.
Polk ES15Paradigm SE Atom
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 ES15 |
Paradigm SE Atom |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5.25-inch
|
1 x 5.5-inch
|
ES15 features a 1" Terylene Soft-Dome Tweeter and 1 x 5.25" Mica-reinforced polypropylene Woofer with a Crossover frequency at 2500Hz. On the other hand, the Monitor SE Atom features a 1" Hard-Dome Tweeter and 1 x 5.5" Mineral-filled polypropylene Woofer.
Frequency Response
ES15 has a frequency range of 44-40k Hz whereas Monitor SE Atom has a frequency range of 61-21k Hz. With a minimum frequency of 44Hz, the ES15 can go significantly deeper on the low side and provide stronger bass compared to the Monitor SE Atom's min frequency of 61Hz.
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
ES15 and Monitor SE Atom have the same Impedance of 8 ohms but where they differ is the sensitivity levels. ES15 sensitivity is rated at 85 dB and the Monitor SE Atom's is at 89 dB. This 4 dB difference makes the Paradigm SE Atom a more sensitive speaker compared to Polk ES15, 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 ES15 is rated 20-100 watts and Monitor SE Atom 15-100 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
ES15 features Post type posts and Monitor SE Atom has a Post type posts. None of these speakers feature bi-amping/bi-wiring.
Polk ES15's 5-Way post terminals
Paradigm SE Atom's Post terminals
Cabinet Type and Port Position
Both ES15 and Monitor SE Atom have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.
If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.
Polk ES15 Power Port 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 ES15's and Paradigm SE Atom's external dimensions. Polk ES15 has external dimensions of 307.0 x 193.0 x 259.0mm (12-1/16 x 7-9/16 x 10-3/16inch) whereas Paradigm SE Atom has external dimensions of 324.0 x 181.0 x 277.0mm (12-3/4 x 7-1/8 x 10-7/8inch).
Polk ES15 is 17mm shorter and 18mm less deeper than Paradigm SE Atom but it is also 12mm wider.
Below you can see the front view size comparison of Polk ES15 and Paradigm SE Atom in scale.
Comparison image of Polk ES15 and Paradigm SE Atom Size and External Dimensions
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 ES15 is approximately 499.9cm2 / 77.5inch2 and base area of the Paradigm SE Atom is approximately 501.4cm2 / 77.7inch2. The ES15 requires 0% less surface area than the Monitor SE Atom which gives it a small advantage on placement in tight spaces.
Here is another comparison that shows both speakers on a BDI Octave Media Cabinet, next to a standard size amplifier and turntable in scale:
Size Comparison image of Polk ES15 and Paradigm SE Atom on a Media Console
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 ES15 weighs 5.91kg / 13lbs and the Paradigm SE Atom weighs 5.45kg / 12lbs. This makes the ES15 8% heavier than the Monitor SE Atom.
Here is a comparison of how ES15 and Monitor SE Atom'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 ES15?
Here are the items that are included inside the box of ES15:
- 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 Paradigm SE Atom?
Here are the items that come with the Monitor SE Atom:
- 2 Bookshelf loudspeakers
- 2 Grilles
- 8 Rubber feet
- Owner's Manual
- Online Registration Card
 Low Frequency Response |
44 Hz
vs
61 Hz
|
Generates deeper bass |
 High Frequency Response |
40k Hz
vs
21k Hz
|
Generates higher frequency |
 Mounting Bracket |
Yes
vs
No
|
Allows mounting on walls |
 Height |
307mm
vs
324mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
499cm2
vs
501cm2
|
Takes less floor space |
 Price per pair* |
299USD
vs
300USD
|
costs less (*prices may change depending on the seller, location and time) |
 Sensitivity |
89 dB
vs
85 dB
|
Play louder with same amount of amplification power |
|
Woofer Size |
5.5 inches
vs
5.25 inches
|
Larger woofer |
| General |
Polk Audio Signature Elite ES15 |
Paradigm Monitor SE Atom |
| Brand |
Polk Audio |
Paradigm |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
20-100 watts |
15-100 watts |
| Sensitivity |
85 dB |
89 dB |
| Impedance |
8 ohms |
8 ohms |
| Frequency Response |
44-40k Hz |
61-21k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5.25" |
5.5" |
| Woofer Composition |
Mica-reinforced polypropylene |
Mineral-filled polypropylene |
| Woofer Surround Material |
Butyl rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Soft-Dome |
Hard-Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
2500Hz |
n/a |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
307.0mm (12.1") |
324.0mm (12.8") |
| Width |
193.0mm (7.6") |
181.0mm (7.1") |
| Depth |
259.0mm (10.2") |
277.0mm (10.9") |
| Weight |
5.91kg (13lbs) |
5.45kg (12lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF, Wood-grain vinyl |
MDF/Vinyl |
| Available Colors |
Black,White,Walnut |
Matte Black,Gloss White |
| Mounting Bracket |
Keyhole |
No |
| Recommended Stand Height |
24-28" |
26-28" |
| 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 |
No single best speaker here - they are built to different priorities, and the right one depends on your room, your amplifier and what you listen to.
| Area | Better | Why |
|---|
| Bass | A | Polk ES15 digs deeper - 44Hz against 61Hz. |
| Amplifier needs | B | Paradigm SE Atom is more sensitive (89dB vs 85dB), so it goes louder on the same amplifier. |
| Headroom | evenly matched | Similar power handling (100W vs 100W). |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Expandability | depends | Neither adds bi-amping, a sub output or height drivers. Polk ES15 sits in a wider range (12 models), so a matched surround system is easier later. |
| Price | evenly matched | Much the same money ($299 vs $300 a pair). |
A Polk ES15 B Paradigm SE Atom
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?
Neither runs away with it - they trade advantages. Let the "depends" rows and your own room settle it. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 61Hz anyway, so judge these on the other rows instead. If your amplifier is modest, vintage or valve-based, Paradigm SE Atom is the safer partner - the other will want more current or more watts to sound its best.
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.