In Phase Car Audio USW300 - 300W Underseat Compact Subwoofer

• Question: 28 February 2021
  Hi. Does this sub require a power supply from the car battery. I have a supply to my current mono block amp including RCA but as I need the boot space can the mono block supply connect to this

  Answer: 
  Hi,
  
  This underseat sub will require a 12V power feed regardless of the current system fitted.

  Found Useful? Yes 

• Question: 24 January 2021
  Car: Honda Jazz - 2008>
  
  1) if fitting from stock head unit does it take one of the outputs out (like rear speakers) to work.
  2) there is another in phase which seems to be similar usw 10.which is better?
  Thanks,
  Dan

  Answer: 
  Hi,
  
  The USW10 is better but for the price, the USW300 is better value for money.
  
  Yes, I would use a line out converter for better performance. See below
  
  In Phase Speaker to Rca Converter adjustable output gain

  Found Useful? Yes 

• Question: 29 November 2020
  Car: Seat Leon - 2007>
  
  I have a 2018 seat leon, was about to purchase this sub. Just wondering if there is any additional wiring I will require to connect this to a standard stereo. Many thanks

  Answer: 
  Hi
  
  The USW300 will come with all the cables required for installation.
  

  Found Useful? Yes 

Question: 25 November 2020
Car: Toyota Aygo -

Hello, I was this after looking at the kenwood reviews. Please could I ask would would I need to fit this up to my pioneer stereo. I have a Toyota aygo 2007 and wanted to bring the sound together.

Answer: 
Hi,

This will wire straight up to the Pioneer unit.

Found Useful? Yes 

Question: 16 November 2020
Car: Mitsubishi Colt - 2004 >

if i run the power wires next to an rca cable will i get interference? will the air vent under the seat make the sub too hot? will velcro be good enough to hold it in place?

Answer: 
Hi,

You will get that noise with any amp where the cables run too closely together. Velcro is normally fine for us and I couldn't comment on the air vent as I do not know how hot it gets.

Found Useful? Yes 

Question: 29 October 2020
Car: Ford Focus - 2004>

Hi does this have speaker level input and also would it turn on when its got power through the speaker level if it has it to save me connecting it to a ignition on wire

Answer: 
The In Phase USW300 does have high level input but you woudl need to wire to the fuse box to ensure it turns off when the car does.

Found Useful? Yes 

Question: 21 October 2020
Car: Ford Ranger - 2007>

Can you run more than one of these units of the same oem system?

Answer: 
Hi,

Yes, but require professional installation.

Found Useful? Yes 

Question: 02 October 2020
Car: Citroen C4 - 2004>

My car is a c4 Picasso 2008 will this fit with stereo sony 8050 thanks Steve

Answer: 
Hi Steve

The USW300 can be installed in your Citroen C4 Picasso.

Found Useful? Yes 

Question: 31 August 2020
Hi is this compatible with stock smeg touch screen on peugeot 2008

Answer: 
Hi,

This subwoofer will work with any car stereo.

Found Useful? Yes 

Question: 15 August 2020
Car: Honda Fit - 2007-2009

Will this fit in my car?

Answer: 
Hi,

The In Phase USW300 will fit your Honda Fit 2007. The USW300 comes with all the needed wiring. I would run the unit on an SRCA PRO for better signal strength, it in turn, improves sound quality.

In Phase Speaker to Rca Converter adjustable output gain

Found Useful? Yes 
• 

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: