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In Phase Car Audio In Phase Car Audio USW300

In Phase Car Audio USW300 - 300W Underseat Compact Subwoofer

£149.99 Save £50.00 (25%) was:~~£199.99~~

57 Review(s) / write a review

Quickfind Code - 42186

Quick Summary:

Made from Diecast Aluminium fits snuggly under the seat of any car or in two seaters even behind the seats. Can be mounted inside the boot area also. Has complete control allowing for volume and phase adjustment by rotary hardwired.

Condition: New

£149.99

Save £50.00 (25%)
~~rrp: £199.99~~

Pre Order: stock expected on: 31 March 2022

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Key Features

300W Underseat Compact Subwoofer - In Phase Car Audio USW300

The key thing about the In Phase USW 300 is the performance, the little active woofer really packs a punch, the bass response is amazing, you really do get SUB Bass from it. Its extremely responsive so the music has a completely different sound once added to the car. Many people think about changing speakers in you car, my advice is just add the USW 300 and you will think you have new life in your car! Enjoy its an awesome product.

This underseat subwoofer comes with it's own wiring and amplifier. Please do not use any other kit.

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Technical Specification

Features:

5" x 8" Aluminium Speaker
130w RMS
300w Max Power
Die Cast Aluminium construction
Variable Subwoofer crossover 40-150hz
Speaker Frequency range 40-150hz
Bass Boost 26db Gain @ 42Hz
Bass Boost Frequency
Wired Remote Control
High Level speaker input
Line input
Max Power consumption 10Amp
LED Power Indicator
Super Compact design
W 280mm x H 200mm x D 75mm
Weight 3.7KG

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Customer reviews

Sound not great
ANTHONYMUSKETT on 04/01/2022 2 star rating

I bought this sub as it had good reviews and had double the power of my current under seat sub. I was not impressed with the sub at all it is not very loud and when you can hear it it is distorted. While driving it might as well not be there at all. Very disappointing as I have another mode of in-phase in my van and that is brilliant

Fantastic
Benjamin W on 26/11/2021 5 star rating

This is a fantastic choice for a small car too (Ford Fiesta) - I've not tried the Kenwood competitor (which was my original plan) but knowing what I do about audio equipment and subs/amps performing best with plenty of headroom (and reading a number of reviews of the Kenwood dying, presumably from pushing the smaller amp too hard), I'm very glad I upgraded. The USW300 is plenty, but I also wouldn't want much less. I've had a full 600w monoblock driven 12inch ported Kenwood setup in the past (in a different car), and the little InPhase unit gives me about 90-95% of the joy of that experience but with literally zero intrusion in my storage space. Very happy with the little fella

Plenty of bass for the tiny package
TOBY on 19/11/2021 5 star rating

Tonnes of bass from such a small package, very easy to install with plenty of extra wire than I needed. Very satisfied with the bass even in my MR2s small cabin.

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Questions/Answers About This Product

Question: 18 January 2022
Car: VW Transporter - 2005 >

I am looking for an active install in the space under one of the front seats in my T5. Is this sub supplied with a bracket or kit to secure it in place? TIA

Answer:
Hello,

It does come with basic installation equipment but not it might be worth giving us a call to confirm.

Found Useful? Yes
Question: 01 January 2022
Car: Ford Transit - 2005 >

Please can I have a cost for fitting to a transit custom (2016 ) head unit is original. Also available fitting dates please ( Saturdays would be perfect if possible ) ?
I think Nottingham is nearest

Answer:
HI,

Please contact the store directly- https://www.caraudiocentre.co.uk/store-finder.htm

Found Useful? Yes
Question: 18 November 2021
Car: VW Golf - 2003 > MK5

Will this fit into a 2011 sirocco with standard head unit, will it need additional connectors if so what would I need extra?

Answer:
Hi,

This sub comes with all wiring needed. Regards to fitting, it should fit in your vehicle yes however, i would advise measuring the space you have and comparing the dimensions to the subwoofer to make sure.

Found Useful? Yes

Question: 04 October 2021
Car: Ford Fiesta - 2008>

Hi there

Would this fit in a fiesta ST 2017?

If I order online. Can I take in store then for it to be fitted?

Or can this be purchased in store?

How much is fitting?

Thanks
Bradley

Answer:
Hi,

Yes this will fit the Ford Fiesta ST 2017.

For prices related to fitting, you must contact one of the below stores:-

Car Audio Centre Nottingham
542 Mansfield road,
Sherwood,
Nottingham
NG5 2FR
0115 845 3462
nottingham@caraudiocente.co.uk

Car Audio Centre Ilford
743-745 Eastern Ave,
Newbury Park,
IG2 7RS
0208 599 2368
ilford@caraudiocentre.co.uk

Car Audio Centre Tooting
835 Garratt Lane,
Tooting,
London,
SW17 0PG
0208 971 9181
tooting@caraudiocentre.co.uk

Found Useful? Yes

Question: 28 September 2021
Car: Vauxhall Corsa - 2009>

Hi, is this easy to fit to OEM stereo on a 2016 Corsa

Answer:
Hello,

We would recommend getting it done from the installers.

Found Useful? Yes

Question: 10 September 2021
Car: Citroen C3 - 2006>

Do you have any advice on wiring this to the oem stereo of a C3 Picasso. I don’t believe the original unit has a dedicated sun output. Where do you normally feed the power from and how please Thanks

Answer:
Hi,

Please contact one of the stores below for your query:-

Car Audio Centre Nottingham
542 Mansfield road,
Sherwood,
Nottingham
NG5 2FR
0115 845 3462
nottingham@caraudiocente.co.uk

Car Audio Centre Ilford
743-745 Eastern Ave,
Newbury Park,
IG2 7RS
0208 599 2368
ilford@caraudiocentre.co.uk

Car Audio Centre Tooting
835 Garratt Lane,
Tooting,
London,
SW17 0PG
0208 971 9181
tooting@caraudiocentre.co.uk

Found Useful? Yes

Question: 18 August 2021
Hi, we have a Mercedes c class 2016. Would this fit under the seat?

Thank you
Zsanett

Answer:
Hi,

Yes, this should fit under the seat.

Found Useful? Yes

Question: 09 August 2021
Car: VW Transporter - 2005 >

Hi, Do I need anything else for installing into a T6.1 Transporter?
Thanks

Answer:
Hi,

The USW300 comes with its own wirings as well as an inbuilt amp.

Found Useful? Yes

Question: 09 August 2021
Looking for a simple set up for horse box to camper conversion. This plus 2/4 speakers? 6.5s?

Answer:
Hi,

Go for the below set up

XTC17.2CF 17cm 250 Watts 2-Way Rotary Tweeter Car Door/Shelf Speakers
USW300 - 300W Underseat Compact Subwoofer
XTC17.2 17cm 250 Watts 2-Way Rotary Tweeter Car Door/Shelf Speakers

Found Useful? Yes

Question: 15 July 2021
Car: Nissan

Hi, is this an active subwoofer or do I need to connect to an amplifier?

Answer:
Hi the In Phase Underseat woofer comes with a built in amp and also wiring kit

Found Useful? Yes

Question: 15 July 2021
Car: Mazda MX-5 - 2006>

Hello i've the standard sterio set up in my mx5 have you got an adapter put that will plug into this sub ?
Regards

Answer:
This will take teh sound signal from teh speakers wires if not you can buy a Speaker to RCA converter

In Phase Speaker to Rca Converter adjustable output gain

Found Useful? Yes

Question: 12 July 2021
Car: Ford Transit - 2005 >

Hi can this sub be used with the OEM sound system that's in my ford custom. 🤔

Answer:
Yes the In Phase USW300 can be used on any car stereo including the OEM one

Found Useful? Yes

Question: 28 June 2021
Car: Mazda MX-5 - 1990 - 2000

i have a MK1 MX-5, i currently have an inphase usw10 but want to have one either side but the usw10 is an awkward shape for my car. im wondering how the usw10 & usw300 compare. which is 'punchier'

Answer:
Hi,

The USW10 is the punchier of the two subwoofers

Found Useful? Yes

Question: 23 June 2021
Car: Nissan Qashqai - 2007>

I have 2017 Nissan Qashqai and am very interested in purchasing n Phase Car Audio USW300 - 300W Underseat Compact Subwoofer what are the best speakers.Do you have adapetrs to fit door and connectors

Answer:
Hi,

Best is subjective. What are you looking to get out of the system?

Found Useful? Yes

Question: 23 June 2021
Car: Nissan Qashqai - 2007>

My car is A N Vision 2017 J11A.
The head unit does not have RCA, can this unit be spliced into speaker wires?

Answer:
Hi,

Yes, this unit can use speaker level input

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:

Nottingham:

542 546 Mansfield Road, Sherwood NG5 2FR
Tel: 0115 9624 986

Ilford:

743-745 Eastern Ave, Newbury Park, London, IG2 7RT
Tel: 0208 599 2368

Tooting:

835 Garratt Lane, Tooting, London, SW17 0PG
Tel: 0208 971 9181