In this review, we will be comparing ES20 and 3030i, two Passive Bookshelf speakers from Polk Audio and Q Acoustics. Let's have a brief look at the main features
of Polk ES20 and Q Acoustics 3030i first before getting into our more
detailed comparison.
What size room are the Polk ES20 and Q Acoustics 3030i 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:
In the following sections, we will get into more detail in order to better understand how the Polk ES20 and Q Acoustics 3030i compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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through my links. As an Amazon Associate I earn from qualifying purchases.
Drivers
Both ES20 and 3030i are 2-way speakers.
| Driver |
Polk ES20 |
Q Acoustics 3030i |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 6.5-inch
|
1 x 6.5-inch
|
ES20 features a 1" Terylene Soft-Dome Tweeter and 1 x 6.5" Mica-reinforced polypropylene Woofer with a Crossover frequency at 2500Hz. On the other hand, the 3030i features a 1" decoupled Tweeter and 1 x 6.5" Coated paper Woofer with a Crossover frequency at 2400Hz.
Frequency Response
ES20 has a frequency range of 41-40k Hz whereas 3030i has a frequency range of 46-30k Hz. With a minimum frequency of 41Hz, the ES20 can go significantly deeper on the low side and provide stronger bass compared to the 3030i's min frequency of 46Hz.
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
High Frequency
Bookshelf Speakers
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
ES20 is a 8 ohms speaker compared to the 3030i which has a nominal impedance of 6 ohms.
These two speakers also have different sensitivity levels. ES20 sensitivity is rated at 86 dB and the 3030i's is rated at 88 dB. This 2 dB difference makes the Q Acoustics 3030i a more sensitive speaker compared to Polk ES20, 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. 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.
ES20 can handle a max power of 125 watts RMS from the amp the whereas 3030i has a max power handling value of 75 watts RMS, 50 watts less than the ES20.
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
ES20 features Post type posts and 3030i has a Post type posts. None of these speakers feature bi-amping/bi-wiring.
Cabinet Type and Port Position
Both ES20 and 3030i 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.
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 Polk ES20's and Q Acoustics 3030i's external dimensions. Polk ES20 has external dimensions of 375.0 x 218.0 x 351.0mm ( 14-3/4 x 8-9/16 x 13-13/16inch) whereas Q Acoustics 3030i has external dimensions of 325.0 x 200.0 x 329.0mm ( 12.7 x 7.8 x 12.9inch) .
Polk ES20 is clearly the larger of the two speakers. Its body is 18mm wider, 50mm taller and 22mm deeper than Q Acoustics 3030i.
Below you can see the front view size comparison of Polk ES20 and Q Acoustics 3030i in scale.
Comparison image of Polk ES20 and Q Acoustics 3030i 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 ES20 is approximately 765.2cm2 / 118.6inch2 and base area of the Q Acoustics 3030i is approximately 658.0cm2 / 102.0inch2. The ES20 requires 16% more surface area than the 3030i which gives it a small disadvantage on placement in tight spaces.
Here is an 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 ES20 and Q Acoustics 3030i 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 ES20 weighs 7.73kg / 17lbs and the Q Acoustics 3030i weighs 6.20kg / 13.6lbs. This makes the ES20 25% heavier than the 3030i.
Here is a comparison of how ES20 and 3030i'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 ES20?
Here are the items that are included inside the box of ES20:
2 Bookshelf loudspeakers2 Grille (attached)8 Self-adhesive rubber feetOwners ManualOnline Product Registration
What's in the Box of Q Acoustics 3030i?
Here are the items that come with the 3030i:
2 x 3030i bookshelf speakers 2 x Speaker Grilles 2 x Foam Bungs 1 x User Manual
 Max Input Power |
125 watts
vs
75 watts
|
Handle more power from your amplifier |
 Nominal Impedance |
8 ohms
vs
6 ohms
|
Less selective with amplifiers |
 Low Frequency Response |
41 Hz
vs
46 Hz
|
Generates deeper bass |
 High Frequency Response |
40k Hz
vs
30k Hz
|
Generates higher frequency |
 Price per pair* |
399USD
vs
499USD
|
costs less (*prices may change depending on the seller, location and time) |
 Sensitivity |
88 dB
vs
86 dB
|
Play louder with same amount of amplification power |
 Height |
325mm
vs
375mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
658cm2 (200x329mm)
vs
765cm2 (218x351mm)
|
Takes less floor space |
| General |
Polk Audio Signature Elite ES20 |
Q Acoustics 3030i |
| Brand |
Polk Audio |
Q Acoustics |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
20-125 watts |
25-75 watts |
| Sensitivity |
86 dB |
88 dB |
| Impedance |
8 ohms |
6 ohms |
| Impedance |
n/a |
4 ohms |
| Frequency Response |
41-40k Hz |
46-30k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
6.5" |
6.5" |
| Woofer Composition |
Mica-reinforced polypropylene |
Coated paper |
| Woofer Surround Material |
Butyl rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Soft-Dome |
decoupled |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
2500Hz |
2400Hz |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
375.0mm (14.8") |
325.0mm (12.8") |
| Width |
218.0mm (8.6") |
200.0mm (7.9") |
| Depth |
351.0mm (13.8") |
329.0mm (13") |
| Weight |
7.73kg (17lbs) |
6.20kg (13.6lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF, Wood-grain vinyl |
n/a |
| Available Colors |
Black,White,Walnut |
Walnut, Black, White |
| Mounting Bracket |
No |
No |
| Recommended Stand Height |
22-26" |
n/a |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
No |
Other |
|
|
| Parts Warranty |
5 Years |
4 Years |
| Labor Warranty |
5 Years |
4 Years |