Polk Audio Signature Elite ES15 is a 2-way Passive Bass Reflex Bookshelf speaker by Polk Audio. It was released in August 2021. It features a 1" Soft-Dome Tweeter and 1 x 5.25" Mica-reinforced polypropylene Woofer. The speaker has a frequency range of 44-40k Hz and a sensitivity of 85 dB. Polk ES15 has an MSRP of 299$ per pair but can often be found around 269$ per pair.
Room Size Suitability
The size of the room where you plan to use the Polk ES15 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-field | Average |
| Small Room | Good |
| Mid-size Room | Average |
| Large Room | Poor |
| Very Large Room | 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.)
Polk Audio replaced the older S15 with this model. Follow the link to read our detailed comparison of these models:
Compare Polk ES15 vs Polk S15
Polk Audio's Signature Elite Series of Loudspeakers
ES15 is a member of Polk Audio's Signature Elite series of Passive speakers. Signature Elite (ES) is Polk Audio's affordable modern range of bookshelf, tower and center speakers. Below you can see the main specs of these speakers.
See all 9 Polk Audio Signature Elite models compared »
Polk Audio Signature Elite Series Speakers
Polk Audio Signature Elite Series Speakers
**This post contains affiliate links, and we will be compensated if you make a purchase after clicking through our links. As an Amazon Associate I earn from qualifying purchases.
Frequency Response of the Polk ES15 Speaker
Polk ES15 has a Frequency response range of 44-40k Hz and Power Range of 20-100 watts. With a minimum frequency of 44 Hz, ES15 delivers deep bass that will likely satisfy most listeners, especially those who enjoy music. However, movie enthusiasts and music fans who prefer a full range of sound may still benefit from adding a subwoofer.
Here we have a comparison of how ES15's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Bookshelf Speakers
Thinking about a subwoofer for the Polk ES15?
Crossover frequency of the Polk ES15?
The crossover frequency of the ES15 is set to 2500Hz. This is the threshold frequency where the higher frequency signals over this level are sent to the tweeter and the lower-frequency signals are sent to the woofer by the crossover component.
Impedance and Sensitivity
Polk ES15's nominal impedance level is
8 ohms and has a sensitivity of
85 dB.
Sensitivity
Bookshelf Speakers
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Polk Audio Signature Elite ES15 is not considered a difficult to drive speaker from nominal Impedance perspective.
Sensitivity
With a sensitivity level of only 85 dB, Polk Audio Signature Elite ES15 is a difficult to drive speaker from Sensitivity perspective, make sure to choose an amplifier with a high output if you like listening to your music at high volume levels. You may especially have a hard time using Tube amplifiers which are traditionally very low power compared to Class A/B or Class D amps. Work out how loud the Polk ES15 plays in your room →
What amplifier does the Polk ES15 need?
At normal listening levels in a medium room, about
24–100 W
per channel into 8 ohms.
Set your own conditions and we will rank every amplifier we cover.
Prefer to browse? Integrated amplifiers under $300, or every amplifier we cover.
Input Type
ES15 features 5-Way post type connectors. Bi-amping and Bi-wiring are not possible.
Work out what gauge speaker cable this run needs →
Polk ES15 Back View
Polk ES15 External Dimensions and Weight
Polk ES15 has external dimensions of (Height x Width x Depth) 12-1/16 x 7-9/16 x 10-3/16inch (307.0 x 193.0 x 259.0mm ).
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 Polk ES15 is approximately 499.9cm2 / 77.5inch2.
To get a better perspective on the real life size of Polk ES15, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm).
Polk ES15 Speaker Size Compared to a Compact Disc
Here we place the Polk ES15 virtually next to a standard width amplifier and turntable on a BDI Octave Media Cabinet to get a better idea about the size.
Polk ES15 Speaker next to an amplifier and turntable
Find speakers that fit your shelf or alcove → · Work out where they should sit in the room →
WeightThe Polk ES15 weighs 5.91kg / 13lbs per piece. Here is a comparison of how ES15's weight compares with the average, max and min weights in its class.
Weight
All Bookshelf Speakers
Weight
Bookshelf Speakers under $300
How does the Polk ES15 compare to the Polk Audio Signature Elite ES20?
One of the natural alternative to the Polk ES15 is the ES20 which is located one step higher in Polk Audio's Passive Bookshelf selection.
Here is a scaled size comparison of these two speakers to give you an idea how their external dimensions compare:
Comparison image of Polk ES15 and Polk ES20 Size and External Dimensions
Check the Detailed Comparison of Polk ES15 vs ES20 for more details.
Cabinet type and Materials
Polk ES15 has a
Bass Reflex type cabinet and a MDF, Wood-grain vinyl finish. Bass Reflex type loudspeakers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs.
Speaker Feet
Polk ES15 comes with 8 Self-adhesive rubber feet which you can use to secure your loudspeaker on the surface that you are putting on.
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.
Port Position
Polk ES15 is a rear-firing port speaker so you have to make sure you leave enough space between the back of the speaker and wall or bookshelf so that it has room to breathe.
Polk ES15 Power Port Port
Available colors
Polk ES15 is available in Black, White and Walnut.
Wall Mounting
ES15 has Keyhole mounting bracket that makes it possible to mount on walls and similar surfaces easily.
Does the Polk ES15 come with a Grille?
ES15 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.
Polk ES15 with Grille
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
Recommended Accessories
Here is a list of accessories that we think you may need for the Polk Audio Signature Elite ES15.
- Speaker Cable and Connectors
- Vibration Isolators: IsoAcoustics isolators are our favorite isolators but you may find 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.
- Speaker Stands: Stands bring your bookshelf speakers to ideal height (rule of thumb is to have the tweeter level with your ear in your listening position), helps stability and acoustical isolation.
Official Product Page
Official manufacturer's product page for the Polk Audio Signature Elite ES15 speaker can be found below:
Official Product Page for Polk ES15
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.