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Pioneer S-21W 160 W Peak/100 W RMS Active Subwoofer - Black

4.5 out of 5 stars 44 customer reviews
| 20 answered questions

RRP: £99.99
Price: £84.63 & FREE Delivery in the UK. Details
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  • 16 cm Cone Woofer
  • Front Duct bass-reflex enclosure
  • Power Handling: 160W Peak / 100W RMS
  • Power Requirements: AC 220-240 V, 50/60 Hz
  • Frequency Range: 33 - 700 Hz

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Product details

  • Product Dimensions: 40.8 x 34.4 x 23 cm ; 6 Kg
  • Boxed-product Weight: 8 Kg
  • Item model number: S-21W
  • ASIN: B003UTRUMO
  • Date first available at Amazon.co.uk: 5 May 2010
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (44 customer reviews)
  • Amazon Bestsellers Rank: 12,642 in Electronics (See Top 100 in Electronics)

Product Description

Product Description

Add impact to your home cinema sound.

If you want to give your home listening and viewing experience some extra punch, the compact S-21W subwoofer is your solution for more bass.

Integrating a 100W RMS amplifier and enclosed with a 'down-fire' bass-reflex type cabinet, it ideally supports speaker configurations from 2.1 to 5.1.

Phase Control technology manages the time and phase response of the speakers to minimise the effect of additional sound delays usually due to the filtering process of multi-channel recordings.

Box Contains

S-21W Subwoofer
Power Cord
Warranty Card<Operating instructions


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Customer Reviews

4.5 out of 5 stars
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Top Customer Reviews

Verified Purchase
An excellent product for an excellent price. I have an old 4.0 surround sound amplifier by Technics, the old pro logic version 1. This is the bridge between the old stereo amps and the new home cinema amplifiers - the 5.1 / 7.1.

In many ways I prefer the old Dolby Pro Logic Surround mk1, the two rear speakers share just a mono depth/echo channel (so it doesn't matter so much if you are sitting by one rear speaker more than the other, you get more freedom to sit where you want,) and you can (as I have done) hook up a graphic equalizer (it has the old tape recorder monitor button).

Mine is one of the later ones (mid to late nineties) and it marks out its territory by having a new fangled subwoofer-out RCA output. To do this it has to 'make up' a Low Frequency Effects channel, not like a newer 5.1 / 7.1 where the bass is cleverly diverted and solely goes through the subwoofer, in my amplifier the lower frequencies are 'copied' and 'duplicated' through the RCA-out socket at the back of the amp.

When you tell the amplifier to go from stereo to Pro Logic Surround, it sounds great... but occasionally the bass 'disappears'. What I needed was a 'defining and underlining' of the bass (because bass is already coming out of the 'normal' speakers), to ever-so-carefully make the bass stronger and more audible (this is a problem on certain low frequencies because the stereo signal is basically split up across 4 channels - front, left, right, rear - in an analogue way).

I have tried other subwoofers and they did not have the necessary 'bottle' for this old-fashioned job. This does... it underlines and makes more definite the bass guitar, cello, sonic booms, explosions - as occasionally they would 'disappear' into the general track and be generally indistinguishable from the main chord pattern etc... this subwoofer does the trick - it brings the bass out of the woods and into the living room.

And it's cheap!
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I wanted a cheap surround-sound speaker system to go with Sony STR-DA2400ESB 7.1 Channel AV Receiver in Black to enjoy DVDs/TV/X-Box, and this (so far!) is better than i expected.

Although i enjoy surround-sound, i didn't want to pay silly money for expensive systems. Mainly because i have HUMAN ears which detect little difference between cheap and expensive set-ups, and also i respect my neighbours!

Having seen the prices for surround sound packages (£100-£11,000), i wasn't expecting a lot for the price, but these are Pioneer-quality units with an excellent sub, leaving me feeling like i should be paying a lot more for them.

The surround units are well made as you'd expect from Pioneer, but the best part of the system is the Subwoofer which is big (13 x 9 x 16") and powerful with a big bass driver on the underside of the unit about 2" facing the floor.

If you want a low cost, BUT good quality surround speaker set-up, then i would highly recommend these to you.
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Verified Purchase
Bought this subwoofer to compliment my new Pioneer receiver, which I bought at the same time (a VSX-830). I previously had a Onkyo receiver for eight years but without a sub. I use 4x Mordaunt Short (2x medium sized MS20i and 2x small MS10i) speakers in a stereo config. This sub has definitely improved the overall sound of my setup.

It is a large black box, with two inputs on the back (AC and cable for connecting to amp), a volume knob, an on/off switch and an auto-standby more that appears to work fine. Some people have complained about the light on the front but it hasn't bothered me as it is buried behind my whole setup, but it is very bright. Some insulation tape would mask it easy enough though. The sub worked right away and needed no real work, the amp detecting it and after changing the cut-off to what I wanted it was ready to use.

My old large speakers produced decent bass, but this is more refined, accurate and less "rattling" more "booming". Kick drums sound sharp and aggressive from bands like Slayer, and well mixed tracks by a band like Muse sound positively mesmerising with the added bass. The big sounds of orchestral soundtracks like LotR and Star Wars are huge and powerful and on Xbox every gunfight punches hard, without the harshness the speakers gave with huge reverberant explosions and sci-fi rumbles of passing machines sounding well rounded and accurate. The speakers themselves sound better when using this, their highs coming through sharper than before which is a plus, I'm assuming the separation means the speakers are not working so hard below 100Hz.

Overall I would recommend this. I'm no audiophile and I don't see this as anything less than perfect for someone on a moderate budget looking for a decent but affordable sub to boost their system or for their first setup.
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Verified Purchase
A very good sub that backs up my surround sound system connected to my Pioneer 930 amp. It has just two leads ( the Mains power with Uk plug & the 3mtr RCA connector lead to the amp) both leads included). The only thing I am not over happy with is the very bright power light located on the lower front of the unit, it shines bright red when in standby and even brighter blue when power is on, this can probably be rectified by use of a marker pen or some masking tape, so just a small gripe, but something perhaps the manufacturers could address in future.There is a on/off switch on the rear of the unit. The range of woof complements my system well, adding a good deep bass at most sound ranges, which can be adjusted via the control knob on the rear of the unit, a light throb at low levels and, a deep thud at high end impact/explosions etc which isn't in your face as the unit speaker is facing the floor so the sound ripples through the room. I am pleased with the results this sub can produce and hope I don't upset the neighbours
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