In this review, we will be comparing EVO4.2 and RTi A3, two Passive Bookshelf speakers from Wharfedale and Polk Audio.
Let's have a brief look at the main features
of Wharfedale EVO4.2 and Polk RTi A3 first before getting into our more
detailed comparison.
Wharfedale EVO4.2 Key Specs
- 3-way Design
- 1.18x2.36" AMT (Ribbon) Tweeter
- 2" Midrange
- 6.5" Kevlar Woofer
- 54-22k Hz Frequency Response
- 88 dB Sensitivity
- Impedance: 8ohms
- Power Range:25-120watts
- Weight:13.40kg
- Dimensions (H x W x D): 455.0" x 9.8" x 13.7"( 455.0 x 250.0 x 350.0mm )
Polk RTi A3 Key Specs
- 2-way Design
- 1" Dome Tweeter
- 6.5" Polymer composite Woofer
- 50-26k Hz Frequency Response
- 89 dB Sensitivity
- Impedance: 8ohms
- Power Range:20-150watts
- Weight:7.26kg
- Dimensions (H x W x D): 374.7" x 8.4" x 14.0"( 374.7 x 214.4 x 355.6mm )
What size room are the Wharfedale EVO4.2 and Polk RTi A3 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* |
Wharfedale EVO4.2 |
Polk RTi A3 |
| Near-field |
Poor |
Poor |
| Small Room |
Average |
Average |
| Mid-size Room |
Good |
Good |
| Large Room |
Average |
Average |
| Very Large Room |
Poor |
Poor |
(* 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 Wharfedale EVO4.2 and Polk RTi A3 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
One of the fundamental differences between these two speakers is that EVO4.2 is a 3-way design whereas the RTi A3 is a 2-way speaker. 3-way designs utilize a midrange driver in addition to the tweeter and woofer on 2-way designs. Designing a crossover for a 3-way speaker is a complicated process and generally increases the overall cost of the speaker.
| Driver |
Wharfedale EVO4.2 |
Polk RTi A3 |
|
Driver Setup
|
3-way
|
2-way
|
|
Tweeter
|
1.18x2.36-inch
|
1-inch
|
|
Midrange
|
1 x 2-inch |
- |
|
Woofer
|
1 x 6.5-inch
|
1 x 6.5-inch
|
EVO4.2 features a 1.18x2.36" AMT (Ribbon) Tweeter , a 2" Midrange and 1 x 6.5" Kevlar Woofer . On the other hand, the RTi A3 features a 1" silk polymer composite Dome Tweeter and 1 x 6.5" Polymer composite Woofer with a Crossover frequency at 2800Hz.
Frequency Response
EVO4.2 has a frequency range of 54-22k Hz whereas RTi A3 has a frequency range of 50-26k Hz. With a minimum frequency of 50Hz, the RTi A3 can go slightly deeper then the EVO4.2's min frequency of 54Hz.
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
EVO4.2 and RTi A3 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. EVO4.2 sensitivity is rated at 88 dB and the RTi A3's is at 89 dB. This 1 dB difference makes the Polk RTi A3 a more sensitive speaker compared to Wharfedale EVO4.2, 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.
EVO4.2 can handle a max power of 150 watts RMS from the amp the whereas EVO4.2 has a max power handling value of 120 watts RMS , 30 watts less than the RTi A3.
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
Both EVO4.2 and RTi A3 features dual binding post speaker terminals for bi-amping or bi-wiring.
Cabinet Type and Port Position
EVO4.2 has a bottom firing port whereas RTi A3 has a back and front firing ports.
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 Wharfedale EVO4.2's and Polk RTi A3's external dimensions. Wharfedale EVO4.2 has external dimensions of 455.0 x 250.0 x 350.0mm ( 17.9 x 9.8 x 13.7inch) whereas Polk RTi A3 has external dimensions of 374.7 x 214.4 x 355.6mm ( 14.7 x 8.4 x 14.0inch) .
Polk RTi A3 is 35.6mm narrower and 80.3mm shorter than Wharfedale EVO4.2 but it is also 5.6mm deeper.
Below you can see the front view size comparison of Wharfedale EVO4.2 and Polk RTi A3 in scale.
Comparison image of Wharfedale EVO4.2 and Polk RTi A3 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 Wharfedale EVO4.2 is approximately 875.0cm2 / 135.6inch2 and base area of the Polk RTi A3 is approximately 762.4cm2 / 118.2inch2. The EVO4.2 requires 15% more surface area than the RTi A3 which gives it a small disadvantage on placement in tight spaces.