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  1. Home
  2. Focal Speakers
  3. Powered Subwoofers
  4. Focal IWSUB8
Focal IWSUB8 Subwoofer Review
Focal IWSUB8 - Front View

Compare To

Main Features

  • 8" Polyglass Woofer
  • 34-140HzHz Frequency Response
  • Weight: 32.30 lbs / 14.60kg
  • Dimensions (H x W x D): 51.18" x 13.86" x 3.86"
MSRP: $599 (list price)
Check price atAmazon›
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Focal IWSUB8 Subwoofer Review
Focal IWSUB8 Focal IWSUB8
Check price atAmazon›

Made by Focal · France · since 1979 · sold through dealers

IWSUB8 is a In-wall type Passive In-wall by Focal with a frequency range of 34-140HzHz. It was released in 2019. It features 1 x 8" Polyglass Woofer, and powered by a 150 watts amplifier.


**This post contains affiliate links, and we will be compensated if you make a purchase after clicking through our links. As an Amazon Associate I earn from qualifying purchases.

Frequency Response

Where should the crossover go? →  ·  What will your room do to this bass? →

Focal IWSUB8 has a Frequency response range of 34-140HzHz.

Here we have a comparison of how IWSUB8's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
Low Frequency
Passive In-walls
Focal IWSUB8
Min
Average
Max
High Frequency
In-wall Speakers
Focal IWSUB8
Min
Average
Max

Among all subwoofers in our database with a max MSRP price of 750$, these are the 5 Passive In-wall models that can reach deeper bass levels than the Focal IWSUB8's 34Hz:

  • GoldenEar Invisa MPX with Low Frequency of 25 Hz (Compare w/ IWSUB8)
  • Definitive DI 6.5S with Low Frequency of 26 Hz (Compare w/ IWSUB8)
  • Definitive DT8LCR with Low Frequency of 27 Hz (Compare w/ IWSUB8)
  • Definitive DI 5.5S with Low Frequency of 28 Hz (Compare w/ IWSUB8)
  • Definitive DT6.5LCR with Low Frequency of 28 Hz (Compare w/ IWSUB8)

Focal IWSUB8 External Dimensions and Weight

Focal IWSUB8 has external dimensions of (Height x Width x Depth) 13.6250-inch x 13.6250-inch x 4.2500-inch (1300.0 x 352.0 x 98.0 mm ).

Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited. The base area of Focal IWSUB8 is approximately 345.0cm2 / 53.5inch2.

To get a better perspective on the real life size of Focal IWSUB8, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm).

Focal IWSUB8 Real Life Body Size Comparison
Focal IWSUB8 Speaker Size Compared to a Compact Disc

Find speakers that fit your shelf or alcove →

Cabinet type and Materials

Focal IWSUB8 has a In-wall type cabinet.

What's in the Box of Focal IWSUB8?

Here are the items that are included inside the box of IWSUB8:
  • Passive in-wall subwoofer
  • Magnetic mounting frame
  • Metal-mesh grille
  • 2 Angled mounting brackets
  • Thirty-six 30mm screws
  • Twelve 13.5

Recommended Accessories

Here is a list of accessories that we think you may need for the Focal IWSUB8.

  • Speaker Cable and Connectors
    • Speaker Cables with Banana Plugs: If you know the lenght of the cable you need, this is the easier option to connect your speakers with your amp.
    • Speaker Cables without Connectors: If you are not sure about the lenght or need longer than standard cables with plugs, choose this option.
    • Banana Connectors and Plugs: If you chose the cables without connectors option or already have some cable around, pick the banana plugs separately.
  • Vibration Isolators: IsoAcoustics isolators are our favorite isolators but you may find more affordable options too.
  • Acoustic Panels and Treatments: Your room is as important as your stereo equipment so acoustic treatments goes a long way in improving the overall performance.

Warranty

2 Years of parts warranty and 2 Years of labor warranty is generally provided by the manufacturer.

Focal IWSUB8 Detailed Specifications

General
BrandFocal
Full Model NameFocal IWSUB8
TypePassive In-wall
Release Date2019
Frequency Response34-140HzHz
Enclosure TypeIn-wall
EnclosureIn-wall
Amplifier & Driver
Power (Peak)200 watts
Woofer8-inch Polyglass

Controls & Connections
Physical
Dimensions (HxWxD)51.18" x 13.86" x 3.86" (1300.0 x 352.0 x 98.0 mm)
Weight14.6 kg (32.3 lbs)
Parts Warranty2 Years
Labor Warranty2 Years
Focal IWSUB8 Alternatives in Passive In-wall Speakers
Model Frequency Woofer Amp Power Dimensions
Klipsch R-5800-W II
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40-23k Hz 8" — 14.6875-inch x 9.1250-inch x 3.9375-inch"
Klipsch R-5502-W II
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46-20k Hz 5.25" — 16.3750-inch x 6.5000-inch x 3.3750-inch"
JBL Studio 6 88LCR
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43-20k Hz 8" — 20.4375-inch x 8.7500-inch x 3.7500-inch"
B&W CWM7.3 S2
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48-28k Hz 6" — 28.0000-inch x 9.9375-inch x 4.0625-inch"
MartinLogan Motion XT CI XTW6-LCR
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44-25k Hz 6.5" — 27.0000-inch x 6.6250-inch x 3.5625-inch"
JBL Studio 6 Theater
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65-20k Hz 5.25" — 25.3125-inch x 6.2500-inch x 3.7500-inch"
JBL Stage 280W
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42-25k Hz 8" — 14.6875-inch x 9.3750-inch x 3.8750-inch"
Focal 300 IW6 LCR
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40-28k Hz 6.5" — 22.5000-inch x 7.5000-inch x 4.0000-inch"
B&W CWM7.4 S2
Compare
45-28k Hz 4" — 23.5000-inch x 5.8125-inch x 3.6875-inch"
Definitive UIW RLS III
Compare
24-30k Hz 5.25" — 23.7500-inch x 5.8750-inch x 3.8750-inch"
Focal 100 IW LCR5
Compare
55-23k Hz 5.125" — 16.3130-inch x 5.8130-inch x 3.2500-inch"
Klipsch R-5650-S II
Compare
60-23k Hz 6.5" — 13.0000-inch x 8.0000-inch x 3.6875-inch"
JBL Stage 260W
Compare
50-25k Hz 6.5" — 12.2500-inch x 7.2500-inch x 3.5625-inch"
B&W CWM663
Compare
45-50k Hz 6" — 11.0000-inch x 7.2500-inch x 3.7500-inch"
JBL Studio 2 55IW
Compare
40-20k Hz 5.25" — 14.1250-inch x 6.4375-inch x 3.3750-inch"
Polk Audio RC85i
Compare
50-20k Hz 8" — 12.7500-inch x 8.6875-inch x 3.5000-inch"
Frequently Asked Questions about Focal IWSUB8

How low can the Focal IWSUB8 go?

The Focal IWSUB8 has a frequency response of 34-140HzHz. Its low-end extends to 34Hz.

Is the Focal IWSUB8 sealed or ported?

The Focal IWSUB8 uses a In-wall enclosure. Ported (bass-reflex) designs use a tuned vent to move more air, giving deeper, louder output for the same driver, which suits home theater.

What driver does the Focal IWSUB8 use?

The Focal IWSUB8 has a 8-inch Polyglass driver.

How big and heavy is the Focal IWSUB8?

The Focal IWSUB8 weighs 14.60kg / 32.1lbs and measures 51.18" x 13.86" x 3.86" (HxWxD).

How much does the Focal IWSUB8 cost?

The Focal IWSUB8 has a manufacturer's list price (MSRP) of $599.

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