In this review, we will be comparing UIW RSS II and 65 RT, two Passive In-wall speakers from Definitive Technology and Polk Audio.
Let's have a brief look at the main features
of Definitive UIW RSS II and Polk Audio 65 RT first before getting into our more
detailed comparison.
Definitive UIW RSS II Key Specs
- 2-way Design
- 1" Hard-Dome Tweeter
- 2 x 4.5" Polypropylene Woofer
- 26-30kHz Frequency Response
- 90 dB Sensitivity
- Impedance: 8ohms
- Power Range:10-250watts
- Dimensions (H x W x D): 296.0" x 9.8750" x 3.8750"( 296.0 x 251.0 x 99.0mm )
Polk Audio 65 RT Key Specs
- 2-way Design
- 1" Soft-Dome Tweeter
- 6.5" Polymer Composite Woofer
- 50-25kHz Frequency Response
- 90 dB Sensitivity
- Impedance: 8ohms
- Power Range:10-125watts
- Dimensions (H x W x D): 324.0" x 7.2500" x 0.0000"
What size room are the Definitive UIW RSS II and Polk Audio 65 RT 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* |
Definitive UIW RSS II |
Polk Audio 65 RT |
| Near-field |
Poor |
Poor |
| Small Room |
Poor |
Average |
| Mid-size Room |
Good |
Good |
| Large Room |
Good |
Average |
| Very Large Room |
Average |
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 Definitive UIW RSS II and Polk Audio 65 RT compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
**This post contains affiliate links, and I will be compensated if you make a purchase after clicking
through my links. As an Amazon Associate I earn from qualifying purchases.
Drivers
Both UIW RSS II and 65 RT are 2-way speakers.
| Driver |
Definitive UIW RSS II |
Polk Audio 65 RT |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 4.5-inch
|
1 x 6.5-inch
|
UIW RSS II features a 1" Hard-Dome Tweeter and 2 x 4.5" Polypropylene Woofer . On the other hand, the 65 RT features a 1" Soft-Dome Tweeter and 1 x 6.5" Polymer Composite Woofer .
Frequency Response
UIW RSS II has a frequency range of 26-30kHz whereas 65 RT has a frequency range of 50-25kHz. With a minimum frequency of 26Hz, the UIW RSS II can go significantly deeper on the low side and provide stronger bass compared to the 65 RT's min frequency of 50Hz.
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 In-wall class in our database.
Low Frequency
In-wall Speakers
High Frequency
In-wall 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
UIW RSS II and 65 RT have the same Impedance of 8 ohms and their sensitivity is also same at 90 dB.
Sensitivity
In-wall 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.
UIW RSS II can handle a max power of 250 watts RMS from the amp the whereas 65 RT has a max power handling value of 125 watts RMS, 125 watts less than the UIW RSS II.
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
UIW RSS II features Spring post type posts and 65 RT has a Spring post type posts. None of these speakers feature bi-amping/bi-wiring.
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 Definitive UIW RSS II's and Polk Audio 65 RT's external dimensions. Definitive UIW RSS II has external dimensions of 296.0 x 251.0 x 99.0mm ( 11.6250-inch x 9.8750-inch x 3.8750-inch) whereas Polk Audio 65 RT has external dimensions of ( 12.7500-inch x 7.2500-inch x 0.0000-inch) .
Polk Audio 65 RT is 66mm narrower and 99mm less deeper than Definitive UIW RSS II but it is also 28mm taller.
What's in the Box of Definitive UIW RSS II?
Here are the items that are included inside the box of UIW RSS II:
In-wall/In-cieling bipolar speakerGrille7 Foam strips2 ScrewsPaint maskWall templateOwners ManualOnline Product Registration Card
What's in the Box of Polk Audio 65 RT?
Here are the items that come with the 65 RT:
Rectangular in-wall speakerFoam rubber port plugWhite metal grilleMounting templateOwners ManualSheer-Grille Painting instructionsOnline Registration CardPolk Audio product brochure