Please wait...
Please wait...
Our website uses cookies so that you can place orders and we can provide a better service. Continue to use the site as normal if you're happy with this, or find out how to manage cookies.
Please wait...
In Phase Car Audio In Phase XT-12 1400 Watts 12" Subwoofer 2 OXT-12
£62.75 Save £72.23  was:£134.98
Click to Close

Fit it Yourself?

Everything you need to fit it yourself at home

Only £30.00 

With Steering Wheel Control
Only £50.00 

5 Stars (7)

In Phase Car Audio In Phase XT-12 1400 Watts 12" Subwoofer 2 Ohm Dual voice coil 400 watts RMS Kevlar Fibra cone

£62.75 Save £72.23 (54%)  was:£134.98
5 Stars
7 Review(s) / write a review
Quickfind Code - 31957
Quick Summary:

Bang for buck comes to mind when describing this subwoofer. 1400W peak power and 400W rms for less than £75!!!

Save £72.23 (54%)
rrp: £134.98
In Stock!
Buy Now

Finance Available
On Orders Over £300

  • Free Car Air Freshener with every order Free Car Air Freshener with every order
  • Next Day Delivery available on all orders before 5pm Next Day Delivery available on all orders before 5pm
  • Easy Returns Easy Returns
  • 1 Year Easy Warranty 1 Year Easy Warranty

Click image to zoom

Key Features

In Phase 1400 Watts 12" Subwoofer 2 Ohm Dual voice coil 400 watts RMS Kevlar Fibra cone - In Phase Car Audio XT-12

Untitled Document

In Phase XT-12

1400 Watts 12' Subwoofer 2 Ohm Dual voice coil 400 watts RMS Kevlar Fibra cone 
In Phase XT Series subwoofer

In Phase is proud to introduce a new series of professional subwoofers designed in Britain by a team of dedicated engineers.

The NEW In Phase XT range is the second generation of the XT series subwoofers. With some huge improvements to the already fantastic XT series, this 2nd gen XT subwoofer really needs to be heard and handled to appreciate the true quality. The heavy-duty, heavy gauge stamped basket with a black powder coated finish shows it means business, and with the kevlar fibre enhanced nonpress paper cone and hi-roll foam surround it can deal with some impressive power to boot.

The 1400 watts peak and 400 watts RMS has been achieved by the use of 2” high-temp, four layer, aluminium voice coils, and one piece, two layer black poly-cotton spider.

Thanks to includsion of very impressive double stacked 90oz magnets this is a sub that cope with both powerful and punchy all at the same time. All this power is kept cool by the black finish t-yoke with VC direct cooling vents. For the perfect combination of aesthestic, form and function, this In Phase XT subwoofer seriously deserves a new league all of its own.

Download image of In Phase Car Audio XT-12 Click here for Image of In Phase Car Audio XT-12
Technical Specification
Features and Spec
  • Heavy duty gauge stamped basket with black powder finish
  • Kevlar fiber enhanced nonpress paper cone
  • Hi-roll foam surround
  • Black kevlar woven dust cap
  • 2" High temp 4-layer aluminium voice coil
  • 1-pc 2-Layer black poly-cotton spider
  • Tinsel woven on spider
  • Double stacked 90oz magnets
  • Black finish T-Yoke with VC direct cooling vents
  • 400 Watts RMS
  • 1400 Watts Peak handling power
  • 88.4 SPL Db
Please wait...
Customer reviews

Great Subwoofer
Sandip on 25/09/2019 5 star rating

Newbury Park store done me a excellent package with this subwoofer and matching Inphase amp with full installation. Cannot fault this brand. Sounds great my friends can hear me coming before i am even there!!!

Hamza on 20/09/2016 5 star rating

I was recommended this Inphase XT12 subwoofer with a port box by your staff at the Ilford store. I'm so glad i listened to their advise. It sounds awesome and in my Golf. Big Thanks to the staff at your Ilford store.

great sub for the money
marco on 19/09/2016 5 star rating

I'm running one of these on a IPA1041 and its very impressive, giving me plenty of bass in my Honda civic.

View all reviews

Write a review
Review Title: 

How many would you give this product?

Newsletter sign up

Questions/Answers About This Product
  • Question: 22 January 2020
    is there any t/s parameters for these?


    sorry i dont have the information you require, i will request a copy of the manual to be sent to your email address

    Found Useful? Yes 

  • Question: 03 April 2019
    Car: VW Lupo - 1998-2005

    As this is dual voice coil, are they 2 4 ohm coils or 2 2 ohm coils? Thanks


    they are dual 2 ohm coils.


    Found Useful? Yes 

  • Question: 02 April 2019

    As this is a dual voice coil sub, what is the impedence/resistance of each coil?



    they are dual 2 ohm coils i will make sure the website gets updated so the information is shown

    Found Useful? Yes 

  • View All
Got a Question about this Product?

The email address is required to email you when your question has been answered

Car Make
Car Model

chars left

Newsletter sign up

N.B. Questions are answered during office hours
Please don't put sensitive info in the question.

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
743-745 Eastern Ave, Newbury Park, London, IG2 7RT
Tel: 0208 599 2368
835 Garratt Lane, Tooting, London, SW17 0PG
Tel: 0208 971 9181