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In Phase XTB-828R 8" 400W Active Subwoofer with Passive Radiator and Class D Amplifer

SKU 82996
Save 46% Save 46%
Original price £249.99
Original price £249.99 - Original price £249.99
Original price £249.99
Current price £134.99
£134.99 - £134.99
Current price £134.99

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  • Free & Next-Day Delivery Available

    Free & Next-Day Delivery Available

  • Hassle-Free Returns Within 30 Days

    Hassle-Free Returns Within 30 Days

  • 1 Year Warranty

    1 Year Warranty for Peaceful Ownership

XTB-828R is a passive radiator equipped active sealed subwoofer enclosure. Hit really low frequencies and experience true bass accuracy not normally found in bog-standard active subwoofer. Equipped with an all weather glass fibre woven cone 20cm (8') drive unit, paired with a passive radiator in sealed enclosure technology, it provides deep and controlled bass frequencies. Its built-in 400W class D amplifier offers high power handling and numerous controls.

XTB-828R has high and low level inputs that can be plugged with after market and OEM headunits.

This FOUR-in-one enclosure reduces overall dimensions while offering a great bass level. This comes complete with a wiring kit apart from RCA cables. If fitting to an aftermarket headunit, you will need RCA cables

What on Earth is a 'passive radiator'?
A Passive Radiator is a speaker with no voice coil or magnet, basically a speaker cone. This is not connected to the amp at all. The purpose of this speaker is to allow the trapped sound pressure in the sealed enclosure to excite a resonance that makes it easier for the speaker system to create the deepest pitches (e.g bassline). In short, it gives you the benefit of ported enclosures without the downsides. This leads to better sound quality, with a linear frequency response of the sealed cabinet and the higher output you get from a ported design. This is also achieved in a smaller size than the ported subwoofer. You also do not have the same issues with port noise, and instead, you end up with a smooth bass.

Class D Amplifier
A robust, compact and efficient Class D amplifier is mounted to this enclosure. This is the driving force behind the sub. Only the finest components in it's category will do. Offering up to 400W peak and 200W RMS Power

Compact Design
This sub is only the size of a small desktop computer case. This small footprint allows the user to add thumping bass without compromising space in the boot.

Superior Subwoofer Cone
The glass fibre subwoofer cone is purpose built for this package, it is lightweight, durable and rigid without compromising sound quality. A lot of market leaders have a generic subwoofer (from their range) then they build a box to suit. Which works to an extent, this package offers you something more unique and performance based .

  • RCA Input Sensitivity 0.2-6V
  • High Level Input Sensitivity 1V
  • Comes with Remote
  • Phase Switch 0-180 Degrees
  • Bass Boost 0dB~+12dB
  • Subsonic Filter 20-Hz-50Hz
  • LPF 50-150Hz
  • T.H.D <0.38%
  • RMS Power 200W
  • Max Power 400W
  • Signal Sense
  • Soft Delay Remote Turn on
  • Protection Circuit- Thermal and Short
  • Green LED for Power
  • Red LED for Protection Mode
  • Single Voice Coil Sub
  • S/N Ratio >88dB
  • Fuse Rating 25A
  • Impedance 4 ohms
  • Dimensions 248x255x250 (MM)
  • Weight: 8kg

Delivery is made by common carrier next working day. Delivery is FREE for orders in-stock and over £100 or £9.99 for orders less than £100 or special delivery items.

Statutory Cancellation Right

You have the statutory right to cancel your order for any reason within 14 days beginning with the day you receive the item (please see clause 2 of our Conditions of Sale for the full instructions on cancellation and further information on your right of cancellation). We only accept cancellations via phone - 0115 975 8613, email - sales@superfi.co.uk or post - Superfi Returns, DB House, Rani Drive, Nottingham, NG5 1RF, United Kingdom.

Our Voluntary Returns Policy

As well as your statutory cancellation rights described above, you can return most products within 30 days of receipt of the products if the products are complete and are in an unused and undamaged condition. We only accept returns via phone - 0115 975 8613 or post - Superfi Returns, DB House, Rani Drive, Nottingham, NG5 1RF, United Kingdom.

Please note that this returns policy doesn't affect your statutory rights and therefore doesn't affect your right of cancellation as described above.

Please note that you must return each item in the same condition in which you received it. This means that new items must be returned new, unused and complete (including all accessories). Refunds for returned items that are not received in this condition, may be reduced.

Need Help?

Call us on 0115 975 8613

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