In this review, we will be comparing 300 IW 6 and UIW RLS III, two Passive In-wall speakers from Focal and Definitive Technology. Let's have a brief look at the main features
of Focal 300 IW 6 and Definitive UIW RLS III first before getting into our more
detailed comparison.
Focal 300 IW 6 Key Specs
- 1-way Design
- 1" Inverted Hard-Dome Tweeter
- 6.5" Flax Woofer
- 55-28kHz Frequency Response
- 90 dB Sensitivity
- Impedance: 8ohms
- Power Range:25-130watts
- Dimensions (H x W x D): 293.0" x 7.5000" x 3.7500"( 293.0 x 191.0 x 96.0mm )
Definitive UIW RLS III Key Specs
- 2-way Design
- 1" Hard-Dome Tweeter
- 2 x 5.25" Polypropylene Woofer
- 24-30kHz Frequency Response
- 92 dB Sensitivity
- Impedance: 8ohms
- Power Range:10-325watts
- Dimensions (H x W x D): 604.0" x 5.8750" x 3.8750"( 604.0 x 150.0 x 99.0mm )
What size room are the Focal 300 IW 6 and Definitive UIW RLS III 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* |
Focal 300 IW 6 |
Definitive UIW RLS III |
| Near-field |
Poor |
Are you nuts? |
| Small Room |
Average |
Bad |
| Mid-size Room |
Good |
Poor |
| Large Room |
Average |
Good |
| Very Large Room |
Poor |
Good |
(* 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 Focal 300 IW 6 and Definitive UIW RLS III 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
One of the fundamental differences between these two speakers is that 300 IW 6 is a 1-way design whereas the UIW RLS III 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 |
Focal 300 IW 6 |
Definitive UIW RLS III |
|
Driver Setup
|
1-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 6.5-inch
|
2 x 5.25-inch
|
300 IW 6 features a 1" Inverted Hard-Dome Tweeter and 1 x 6.5" Flax Woofer . On the other hand, the UIW RLS III features a 1" Hard-Dome Tweeter and 2 x 5.25" Polypropylene Woofer .
Frequency Response
300 IW 6 has a frequency range of 55-28kHz whereas UIW RLS III has a frequency range of 24-30kHz. With a minimum frequency of 24Hz, the UIW RLS III can go significantly deeper on the low side and provide stronger bass compared to the 300 IW 6's min frequency of 55Hz.
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
300 IW 6 and UIW RLS III have the same Impedance of 8 ohms but where they differ is the sensitivity levels. 300 IW 6 sensitivity is rated at 90 dB and the UIW RLS III's is at 92 dB. This 2 dB difference makes the Definitive UIW RLS III a more sensitive speaker compared to Focal 300 IW 6, hence will play louder with the same amount of watts.
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.
300 IW 6 can handle a max power of 325 watts RMS from the amp the whereas 300 IW 6 has a max power handling value of 130 watts RMS , 195 watts less than the UIW RLS III.
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
300 IW 6 features Spring post type posts and UIW RLS III 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 Focal 300 IW 6's and Definitive UIW RLS III's external dimensions. Focal 300 IW 6 has external dimensions of 293.0 x 191.0 x 96.0mm ( 11.5000-inch x 7.5000-inch x 3.7500-inch) whereas Definitive UIW RLS III has external dimensions of 604.0 x 150.0 x 99.0mm ( 23.7500-inch x 5.8750-inch x 3.8750-inch) .
Focal 300 IW 6 is 311mm shorter and 3mm less deeper than Definitive UIW RLS III but it is also 41mm wider.
What's in the Box of Focal 300 IW 6?
Here are the items that are included inside the box of 300 IW 6:
One in-wall speakerGrill (white)12.5
What's in the Box of Definitive UIW RLS III?
Here are the items that come with the UIW RLS III:
In-wall loudspeakerGrilleSelf-adhesive foam gasketPaint maskWall-Mount TemplateOwners ManualOnline Product Registration Card
Woofer Size 
Height 
Price per pair* 
Max Input Power 
Driver Setup 
Sensitivity 
High Frequency Response 
Passive Radiator 
Base Surface Area