Focal IBus 20 Integrated Compact 75W 8" Powered Subwoofer

Model: IBUS20 UPC: 3544050750135 Item: 162124

Product Information

Single Chassis Solution

Focal’s IBUS 20 powered 8” car subwoofer system complements your vehicle’s existing audio system perfectly – and for a few reasons. First, it’s designed to hide away under a seat or behind a truck’s rear seats (on the rear wall) so it doesn’t occupy your vehicle’s precious cargo space. Second, it ties into any audio system – an aftermarket radio or a factory-installed one. And lastly, it’s built to the exacting standards that we have come to expect from Focal. A built-in 75-watt amplifier powers the installed 8” subwoofer. Oh, and as a bonus, the subwoofer system comes with a wire remote volume knob so you can control the volume of the subwoofer independently from the rest of your sound system. You can look forward to accurate and engaging bass performance from this little guy.

Shallow-mount Subwoofer

How does Focal squeeze an 8” subwoofer into the compact IBUS 20 chassis? Simple: they use a high-performance shallow-mount subwoofer of their design and making. The engineers at Focal know how little room you’re willing to lose for something that can deliver some solid bass performance. For as small of a space that the IBUS 20 occupies, it can deliver some impressive low-frequency response. Get that bass response you crave without losing all of your available cargo area.

IBUS 20 Highlights:

  • Powered 8” underseat/hideaway subwoofer system
  • 75-watt Class D amplifier for efficiency
  • Aluminum enclosure that’s small enough to tuck away under a seat in many vehicles
  • Adapts to either a factory-installed audio system via the onboard speaker level inputs or an aftermarket radio via line level inputs
  • Remote subwoofer volume knob included so you can dial in the perfect bass performance from the driver’s seat
  • Accepts 8 or 10 gauge power/ground connections (power kit not included)
  • Dimensions: 14”W x 3”H x 9-7/8”D
  • Warranty: 1 year
  • Included: World Wide Stereo 60-day guarantee and expert product support



  • Powered underseat/hideaway subwoofer system
  • 75-watt Class D amplifier built-in (150-watt peak power)
  • Low-pass filter
  • Bass boost (0-18dB)
  • Phase control (0 or 180 degrees)
  • Speaker level/pre-amp inputs
  • Frequency response range: 45Hz – 150Hz
  • 8 or 10 gauge power/ground inputs (power kit not included)
  • Dimensions: 14”W x 3”H x 9-7/8”D

What's in the Box

What's in the Box:

  • 1 IBUS 20 powered subwoofer
  • 9-1/2” wiring harness (power w/ in-line fuse holder / ground / remote turn-on / speaker level input)
  • Remote subwoofer volume knob
  • 18’ remote cable for subwoofer volume knob
  • 1 pair of “hook-and-loop” fasteners
  • 4 rubber feet
  • 8 washers
  • 13 screws
  • Owner’s manual