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In Phase USW10 300W active underseat subwooferUSW10
£149.99 Save £100.00  was:£249.99
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Fit it Yourself?

Everything you need to fit it yourself at home

Only £30.00 

With Steering Wheel Control
Only £50.00 

5 Stars (40)

In Phase USW10 300W active underseat subwoofer

Save: £100.00 (40%)  rrp: £249.99
5 Stars
40 Review(s) / write a review
Quickfind Code - 25817
Quick Summary:

USW10 Underseat Woofer
Built In Amp
Works of Any Stereo
Remote BASS Gain
Best Understeat Woofer in the World

Save: £100.00 (40%)
rrp: £249.99
In Stock!
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On Orders Over £500

  • Free air freshener with every order FREE air freshener with every order
  • Next Day Delivery available on orders placed before 5pm Next working Day Delivery available on orders placed before 5:00pm
  • Easy returns Easy Returns
  • 1 Year Warranty 1 year warranty

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Key Features

300W active underseat subwoofer - In Phase USW10

In Phase USW10 Ultra Compact Active Subwoofer

For a Subwoofer that has all that bass pumping power but doesn’t need a lot of space, look no further. With it’s in built amplifier powering an aluminium coned subwoofer and a max output of 300W the iN PHASE USW10 won’t fail to impress. The iN PHASE USW-10 with measurements of only 69mm in depth and 270mm in diameter will fit easily in just about any location in your vehicle while still packing a powerful bass punch. 

Download image of In Phase USW10 Click here for Image of In Phase USW10
Technical Specification
  • Maximum Power Output 300W
  • Rated Power Uotput 100W
  • Output Impedance 4 Ohm + 4 Ohm
  • Crossover Frequency 50-100Hz
  • Size 270mm (D) 69mm (H)
  • Weight (inc accessories) 4.8kg
  • Phase Button (0-180 degrees)
  • Remote level Control (5m)
  • Aluminium Cone
  • Ultra Slim Design
  • Die Cast Aluminium Chassis
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Customer reviews

Brilliant Product
Nottingham Store on 28/09/2015 4 star rating

hi all, this product we have fitted on many of times, and due to its size being so compact they pack a big punch for all those who want bass with not alot of bass.

Ian on 23/09/2015 5 star rating

Had this Inphase USW10 installed in my Golf MK6 in the boot at the back of the seat. I cannot believe the difference this little baby makes. Long as you are after acoustic bass to add to your system i highly recommend this product.

Nice bass
TIMOTHYEMBLETON on 30/06/2015 5 star rating

Bought this for my VW campervan and sits under the seat nicely. I had no bass at all before this as campervans don't have thick enough door skins or fronts to house decent speakers so this has made a massive improvement. 100% recommended

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Questions/Answers About This Product
  • Question: 06 May 2017
    Car: Ford

    Will this fit the ford ecosport

    hi yes it will fit into most cars without any problem .

    USW10 300W active underseat subwoofer

    Found Useful? Yes 

  • Question: 05 April 2017
    Car: Citroen C2 - 2005>

    Can you have 2 of these fitted and would you get much benefit from having the extra one?


    thanks for your question, wiring 2 together has been done before in other vehicles & does give additional bass, as long as you have the space it does work.

    Found Useful? Yes 

  • Question: 27 February 2017
    Car: Mazda MX-5 - 2001 >

    Hi will this product fit under the seat on a mk2.5 mx5?

    Thanks for your question.

    We do not know how much room is under your seat so please come down to one of our stores and we will happily measure it up for you.

    Found Useful? Yes 

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Fitting Services

Need help with Installation?

Here at CarAudioCentre we offer a professional and reputable fitting service in all our stores. For all fitting enquiries and bookings please visit or call one of our nationwide stores. Our fitters can install your new car stereo, DAB radio, audio visual, speakers, subwoofers or amplifier. We can also help to connect your iPod or MP3 player to you existing audio unit and can offer the best advice on the right in-car entertainment for your vehicle, to further this more we also offer a total 100% custom installation service for demo and show vehicles. So if you have an idea come on in and run it past us, the possibilities are endless and we are never too busy for an enthusiastic chat about our favourite subject.

Please note:

"That our two year warranty on products is only applicable to purchases made directly from us and that have been fitted in one of our stores."

Our Stores:

542 546 Mansfield Road, Sherwood NG5 2FR
Tel: 0115 9624 986
91 Joel Street, Northwood, London, HA6 1LU
Tel: 01923 510868
1768-1770 Pershore Road, Cotteridge, Birmingham, B30 3BH
Tel: 0121 459 3131
743-745 Eastern Ave, Newbury Park, London, IG2 7RT
Tel: 0208 599 2368
279 Aylestone Road, Leicester, LE2 7QJ
Tel: 0116 283 1358
Unit 3, 153 Great Ducie Street, Manchester, M3 1FB
Tel: 0161 832 4550
835 Garratt Lane, Tooting, London, SW17 0PG
Tel: 0208 971 9181