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Focal RSB-250

Auditor Series 10" dual 4-ohm voice coil subwoofer

Item # 091RSB250

Focal has built a reputation for building great speakers for home, car, or recording studio, and our customers...

Focal has built a reputation for building great speakers for home, car, or recording studio, and our customers...

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Item # 091RSB250

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$149.99 each
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About the Focal RSB-250

Affordable quality

Focal has built a reputation for building great speakers for home, car, or recording studio, and our customers definitely give their subs high marks. Their Auditor Series RSB-250 10" subwoofer delivers impressive bass, maintaining accuracy even when you're pushing your system hard. The sub's two voice coils allow you to wire it for 2- or 8-ohm impedance, giving you more flexibility when you expand your bass setup.

Affordable quality

Focal has built a reputation for building great speakers for home, car, or recording studio, and our customers definitely give their subs high marks. Their Auditor Series RSB-250 10" subwoofer delivers impressive bass, maintaining accuracy even when you're pushing your system hard. The sub's two voice coils allow you to wire it for 2- or 8-ohm impedance, giving you more flexibility when you expand your bass setup.

Built to take it

The RSB-250 features a polypropylene cone with a butyl rubber surround that's made to handle up to 250 watts RMS. Large vents in the sub's steel basket help dissipate the heat generated by extended bass sessions. This Focal fits into just about any kind of system, whether you prefer tight bass from a sealed box or fatter bass from a ported enclosure.

To drive this single subwoofer, we recommend a mono amplifier rated between 200 and 375 watts RMS at 2 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

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Product highlights:

  • 10" dual 4-ohm voice coil subwoofer
  • polypropylene cone with butyl rubber surround
  • 5-1/2" magnet
  • power handling: 250 watts RMS (500 watts peak)
  • frequency response: 35-500 Hz
  • top-mount depth: 4-5/8"
  • sealed box volume: 0.7 cu. ft.
  • ported box volume: 1 cu.ft.
  • grille not included
  • sensitivity: 88 dB
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # RSB-250

What's in the box:

  • One 10" Dual 4-ohm voice coil woofer
  • Eight 1-3/8" Pan head screws
  • User manual (English/ French/ German/ Spanish/ Italian/ Portuguese/ Chinese/ Russian)
  • Specifications printed on box
  • Thank you note

Customer reviews

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Focal RSB-250 reviews

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Focal RSB-250

Crutchfield customer from Arkansas city, ks on 4/11/2019

2013 GMC Sierra

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Very responsive subs for rock music and similar sounding tunes. Not the deepest hitting subs but good for what I wanted.

Pros: Good response

Cons: Not the best for low hz

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0 of 0 found this helpful

Focal RSB-250

Crutchfield customer from Spring Hill, TN on 12/14/2017

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Best entry level sub you can get. Sounds great, not too much not too little, just blends perfectly with my whole system

Pros:

Cons:

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1 of 3 found this helpful

Unce Unce Unce

Josh from Los Angeles, CA on 5/25/2017

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I have been a fan of JL for many many years. I just did a full system overhaul in my 06' Subaru Legacy GT Wagon, and ended up running the Kenwood Excelon X-801-5 channel amp for the power. Since it's got a dedicated mono sub channel that will do 500w rms at 2 ohms, I decided to go with this dual voice coil Focal over the JL10W0V3. I never A/B tested the two, but I am more than happy with this sub. It handles many different genres with ease. I have it in a sealed box and the bass is plenty tight for jazz, rock, ect, but beats hard for dance music and hip hop. Go for it!

Pros: Yes

Cons: No

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8 of 8 found this helpful

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Product Research

Features

Materials: The FOCAL Auditor RSB-250 features a polypropylene cone and butyl rubber surround to withstand the harsh automotive environment.

Dual 4Ω Voice Coils: The dual 4Ω voice coils offer wiring flexibility; when wired in parallel the woofer presents a 2Ω load, when wired in series the woofer presents an 8Ω load.

Binding Posts: The speaker terminals are threaded binding posts for easy connection of single banana plugs or bare wire up to 8 gauge.

Sealed Box Volume: FOCAL recommends a sealed enclosure with a volume of 20 liters (0.71 cubic feet).

Ported Box Volume: FOCAL recommends a ported enclosure with a volume of 25 liters (0.88 cubic feet) using a single port tube (port size not given).

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