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Focal ISUB TWIN Compact underseat subwoofers with specially-designed drivers

Item # 091ISUBTWI

Enjoy Focal's great sound up close and personal with this pair of compact subs under your seats.

Enjoy Focal's great sound up close and personal with this pair of compact subs under your seats.

Item # 091ISUBTWI

Ships free today

Every order includes

  • Free lifetime tech support
  • 60-day price-drop protection
  • 60-day returns
In stock
$639.99

Get questions answered fast & free

Expert help 400+ hours training Virginia-based

About the Focal ISUB TWIN

Bob Bihlmayer

Product highlights:

  • Featured in our article: Best loaded subwoofer boxes for 2025
  • ultra-compact passive underseat subwoofers
  • aluminum cone with butyl rubber surround
  • 2-ohm impedance
  • frequency response: 50-150 Hz
  • power handling: 100 watts RMS (200 watts peak)
  • sensitivity: 83 dB
  • dimensions: 10.22"W x 3.17"H x 9.44"D
  • weight: 5.95 lbs. each
  • warranty: 1 year
  • MFR # ISUBTWIN
  • Item # 091ISUBTWI

What's in the box:

Focal ISUB TWIN owner's manual

If you need assistance accessing this owner's manual, please give us a call.
  • Two passive enclosed subwoofers
  • Four 8" strips of hook-and-loop fastener
  • User manual (En/Fr)

More details on the Focal ISUB TWIN

Pat M.

Features & specs

General
Woofer Size (inches) 8"x2"
Speakers Per Box 1
Woofer Material Aluminum
Enclosure Type Sealed
Color Black
Pieces in System 2
Width (inches) 10-1/4
Height (inches) 3-3/16
Depth (inches) 9-1/2
Connector Type Spring terminal, 12 AWG
Frequency Response 50-150 Hz Hz
Power Handling (Watts RMS) 100
Power Handling (Watts Peak) 200
Sensitivity 83 dB
Impedance 2 ohms
Parts Warranty 1 Year
Labor Warranty 1 Year

Product Research

Features

Dual Passive Subwoofers: The Focal ISUB TWIN includes two compact, passive bass enclosures designed to fit under most vehicle seats and in tight spaces. The sealed enclosures each include a single 8"x2" racetrack-style driver with an aluminum cone, Butyl rubber surround, and dual heavy-duty ferrite magnets. The driver is protected by a non-removable aluminum mesh grille.

Power: Each of the two included 2-ohm bass enclosures can handle up to 100W RMS (200W peak).

Connection: The ISUB TWIN enclosures feature a single pair of spring terminal connections that can accommodate wire up to 12-gauge.

Mounting: The Focal ISUB TWIN includes four 8" strips of hook-and-loop fastener with adhesive backing for mounting each sub. Both enclosures also feature through-body screw holes in each corner for making a more permanent installation (mounting hardware not included).

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Customer Q&A

3 questions already asked

Q
Does this need a amplifier?
lil eddy  Apr 29, 2025
1 answer
A
Greetings Eddy. Thank you for your question. These do not have built in amplifiers. each one is rated for up to 100 watts, and each are 2 ohms. If you are needing an amplifier recommendation for these, please contact one of our advisors at 800-324-9695.
thomas  Apr 29, 2025 (Staff)
Q
Amp recommendations??
omar  Aug 15, 2024
1 answer
A
Hey Omar, if you just need an amp for this sub enclosure, I would consider a 2ch amp since an independent unbridged channel from your amplifier should be used to supply each subwoofer. Based on that, I would go with a Rockford Fosgate amp like the one below that will give us the 100w per channel at 2-ohms that the subs are looking for. https://www.crutchfield.com/I-rET1c402/p_575R2200X2/Rockford-Fosgate-R2-200X2.html?tp=35757
red  Aug 15, 2024 (Staff)
Q
does these come in a pair?
lawrence  Aug 08, 2024
1 answer
A
Hey Lawrence, yes these will come as a pair. One will be the master sub with your RCA inputs and the other is a passive unit that you will run speaker wire from the master to the partner for the audio.
red  Aug 08, 2024 (Staff)

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