In this review, we will be comparing IWSUB8 and 300 IW6 LCR, two Passive In-wall speakers by Focal Let's have a brief look at the main features
of Focal IWSUB8 and Focal 300 IW6 LCR first before getting into our more
detailed comparison.
Focal IWSUB8 Key Specs
- 1-way Design
- " Tweeter
- 8" Polyglass Woofer
- 34-140HzHz Frequency Response
- --- Sensitivity
- Impedance: 8ohms
- Power Range:up to 200watts
- Dimensions (H x W x D): 347.0" x 13.6250" x 4.2500"( 347.0 x 347.0 x 108.0mm )
Focal 300 IW6 LCR Key Specs
- 3-way Design
- 1" Inverted Hard-Dome Tweeter
- 2 x 6.5" Flax Woofer
- 40-28kHz Frequency Response
- 92 dB Sensitivity
- Impedance: 8ohms
- Power Range:50-150watts
- Dimensions (H x W x D): 572.0" x 7.5000" x 4.0000"( 572.0 x 191.0 x 102.0mm )
What size room are the Focal IWSUB8 and Focal 300 IW6 LCR 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 IWSUB8 |
Focal 300 IW6 LCR |
| 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 Focal IWSUB8 and Focal 300 IW6 LCR 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 IWSUB8 is a 1-way design whereas the 300 IW6 LCR is a 3-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 IWSUB8 |
Focal 300 IW6 LCR |
|
Driver Setup
|
1-way
|
3-way
|
|
Tweeter
|
-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 8-inch
|
2 x 6.5-inch
|
IWSUB8 features a " Tweeter and 1 x 8" Polyglass Woofer . On the other hand, the 300 IW6 LCR features a 1" Inverted Hard-Dome Tweeter and 2 x 6.5" Flax Woofer .
Frequency Response
IWSUB8 has a frequency range of 34-140HzHz whereas 300 IW6 LCR has a frequency range of 40-28kHz. With a minimum frequency of 34Hz, the IWSUB8 can go significantly deeper on the low side and provide stronger bass compared to the 300 IW6 LCR's min frequency of 40Hz.
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
IWSUB8 and 300 IW6 LCR have the same Impedance of 8 ohms but where they differ is the sensitivity levels. IWSUB8 sensitivity is rated at --- and the 300 IW6 LCR's is at 92 dB. This 92 dB difference makes the Focal 300 IW6 LCR a more sensitive speaker compared to Focal IWSUB8, 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.
IWSUB8 can handle a max power of 200 watts RMS from the amp the whereas 300 IW6 LCR has a max power handling value of 150 watts RMS, 50 watts less than the IWSUB8.
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
IWSUB8 features Spring post type posts and 300 IW6 LCR 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 IWSUB8's and Focal 300 IW6 LCR's external dimensions. Focal IWSUB8 has external dimensions of 347.0 x 347.0 x 108.0mm ( 13.6250-inch x 13.6250-inch x 4.2500-inch) whereas Focal 300 IW6 LCR has external dimensions of 572.0 x 191.0 x 102.0mm ( 22.5000-inch x 7.5000-inch x 4.0000-inch) .
Focal 300 IW6 LCR is 156mm narrower and 6mm less deeper than Focal IWSUB8 but it is also 225mm taller.
What's in the Box of Focal IWSUB8?
Here are the items that are included inside the box of IWSUB8:
Passive in-wall subwooferMagnetic mounting frameMetal-mesh grille2 Angled mounting bracketsThirty-six 30mm screwsTwelve 13.5
What's in the Box of Focal 300 IW6 LCR?
Here are the items that come with the 300 IW6 LCR:
One in-wall speaker1 metal-mesh grill (white)23.5
Max Input Power 
Woofer Size 
High Frequency Response 
Height 
Price per pair* 
Driver Setup 
Base Surface Area