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In Phase Car Audio USW12 Dual underseat active subwoofer system 600USW12
£199.99 Save £100.00  was:£299.99
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5 Stars (30)

In Phase Car Audio USW12 Dual underseat active subwoofer system 600 watts with bass and phase wired remote control

Save: £100.00 (33%)  rrp: £299.99
5 Stars
30 Review(s) / write a review
Quickfind Code - 31934
Quick Summary:

In Phase USW12 Dual underseat active subwoofer system 600 watts with bass and phase wired remote control for a discrete solution to achieve bass

Condition: New

Save: £100.00 (33%)
rrp: £299.99
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Key Features

Dual underseat active subwoofer system 600 watts with bass and phase wired remote control - In Phase Car Audio USW12

In Phase USW12 dual active subwoofer enclosure:

After the colossal success of its now little brother the USW10, In Phase have been busy developing another compact subwoofer system to set a new bench mark for the compact subwoofer market.

The USW12 is in keeping with the USW10`s robust yet refined design and heavy duty die cast aluminium chassis construction delivering double the punch! Boasting a dual subwoofer system producing 600 watts peak power. Its ultra slim design to house the 2 dual 6' aluminium cone sub bass drivers has been achieved by using a DieCast Aluminium chassis which also provides a heavy duty and durable construction, Allowing you to install the USW12 anywhere within your vehicles Boot, Underseat, behind seat and foot wells.
It also comes with its own specifically designed cable kit which offers an easy installation and 2 options for either aftermarket stereo installation or factory fitted stereos if without RCA output, This is achieved with a Hi-Level input option. Full control has also been achieved by the advanced addition of the wired remote control which allows you to control both bass gain and phase control.
This woofer system delivers bass like no other compact solution, tested against brands such as Focal, Pioneer and Alpine the In Phase USW12 delivers an uncompromised real deep and accurate subwoofer response compared to these other solutions.

Download image of In Phase Car Audio USW12 Click here for Image of In Phase Car Audio USW12
Technical Specification
Features and Spec
  • Max power 600 watts (300W x2)
  • Dual 6" Bass drivers
  • Die Cast Aluminium chassis
  • Ultra slim design
  • Phase button (0-180) Via remote control
  • RCA input terminals
  • High Level input
  • Remote control wired (5M)
  • Dimensions 380mm (w) x 285mm (h) x 75mm (d)
  • Weight 6.9Kg inc accessories
  • Output inpedance 2Ohm + 2Ohm + 2Ohm + 2Ohm
  • Crossover Frequency 50-100Hz
  • Signal to Noise - 60dB
  • Max current consumption 12A
  • Source voltage 14.4 (10V-16V)
  • Sensitivity (disortion level 1%) RCA input 50mV - 0.2V
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Customer reviews

In Phase USW12 dual active subwoofer
Chris on 20/06/2022 5 star rating

Great advice from the Ilford shop - went to get a harness and the guys advised on this sub, gave me a demo in a car already fitted. Suggested to fit onto rear fold down seat on my Audi TT... stunning sound and glad I bought this as was looking at the pioneer / Kenwood. although more expensive you wont be left wondering should I have spent the extra money. VERY HELPFUL GUYS , THANK YOU.

Great unit!!
Danny Burton on 10/06/2022 5 star rating

It packs a punch for such a small unit. Perfect for what I needed in my truck as space is tight. Didn’t want it under the seats with people in the back kicking it etc. fitted perfectly behind the rear seat. Arrived with no remote but a quick call to caraudiocentre sorted it. The bass produced is perfect. The kids love it!!!!!’n

USW12- Mini R53 Mini Cooper S
Ben on 09/12/2020 5 star rating

Great advice from the shop - fits perfectly onto rear fold down seat in a Mini Cooper S R53 - and still space for a spare space saver wheel in there. Does everything I need to give the car a boost.

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Questions/Answers About This Product
  • Question: 11 January 2022
    Car: VW Golf - 2003 > MK5

    Hi I have a mk6 golf gti with dynaudio system and aftermarket kenwood DNX518VDABS is this easily to fit and will it fit under the seat? Thank you


    Usually underseat subs can be used with any headunit but you would have to check the availability of space before hand.

    Found Useful? Yes 

  • Question: 29 September 2021
    Car: Mazda 3 - 2009>

    If this does not have a built in amp why is it listed as an active sub?


    Apologies. It does have a built in amplifier.

    Found Useful? Yes 

  • Question: 11 August 2021
    Car: Audi

    Hi , I would like to know how much it is to fit in audi Q2 please!


    Sadly, you have come through to the mail audio centre.
    For installation related queries, please contact one of the below:-
    Car Audio Centre Nottingham
    542 Mansfield road,
    NG5 2FR
    0115 845 3462

    Car Audio Centre Ilford
    743-745 Eastern Ave,
    Newbury Park,
    IG2 7RS
    0208 599 2368

    Car Audio Centre Tooting
    835 Garratt Lane,
    SW17 0PG
    0208 971 9181

    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:

120 - 122 Alfreton Road, Nottingham, Nottinghamshire, NG7 3NR
Tel: 0115 9624 986
743-745 Eastern Ave, Newbury Park, London, IG2 7RT
Tel: 0208 599 2368
835 Garratt Lane, Tooting, London, SW17 0PG
Tel: 0208 971 9181