Wooden subwoofer.

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Subwoofers

A subwoofer is a loudspeaker which reproduces bass frequencies from about 5 Hz to about 90 Hz. Frequencies 16 Hz or lower are more felt than heard. more...

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So-called subwoofers which reproduce frequencies from about 35 Hz to about 150 Hz are more properly described as bass modules than true subwoofers. It is difficult for small loudspeakers to reproduce frequencies below 40 Hz, especially above 100 dB, and so it is often advantageous to use a loudspeaker dedicated to this task.

Overview

Subwoofers use drivers (woofer) with cones typically coming in 10" or 12" sizes, but can be as large as 34", and as small as 4". Diameter tends to be advantageous because low frequencies involve shifting a great deal of air; a recent trend has been for high excursion, i.e., how far the cone can linearly travel from its resting position; for example, some can move much as 2.5" in or out, yielding an overall displacement of 5" (this is controlled movement range).

Subwoofers are usually powered by a high power amplifier, and often an electronic crossover ensures that higher frequencies will not be directed to the subwoofer.

The need to reproduce these frequencies has increased since older formats, such as vinyl records, have been displaced by digital formats, such as CD, and particularly 5.1 formats such as Dolby Digital, in which the ".1" channel is dedicated solely to the subwoofer. The .1 channel is usually dedicated to extended bass frequencies, for example, the low frequencies of a gunshot, string bass, or thunder. This track is often used aggressively by mixing artists.

Applications

Professional audio

Subwoofers are found in professional applications such as live concerts, movie theatres, various other sound reinforcement applications (ranging from nightclubs to theme restaurants) and studios. Some of these applications require subwoofers designed for very high sound levels, such as the JBL 4645 – certified for THX movie theatres – which uses an 18" driver (woofer). Note that movie theatre speakers (situated behind a perforated screen) typically use 15" drivers (woofers), so the use here is only to reproduce the lowest frequencies at high sound pressure levels.

Large concert sound systems always use subwoofers (referred to as "subs" by the engineers and crew). The bulk of the sound system is usually "flown" (suspended from the ceiling by chain hoists) and the subs are usually stacked on the stage or the ground in front of the stage to the left and right of the performance space.

An unusual example of the use of sub-woofers came with the release of Earthquake in 1974 where they used a system called Sensurround to create a feeling of an earthquake. This was simply a set of large sub-woofers designed to create infra-bass (felt but not heard). Similar systems are used in theme park rides, such as "Days of Thunder," which uses sound to simulate a physical impact.

Read more at Wikipedia.org


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Subwoofer Vizio Sb3851-C0 D0 Co Sb3251n E0 38" 5.1 Sound Bar Speaker sub wooferSubwoofer Vizio Sb3851-C0 D0 Co Sb3251n E0 38" 5.1 Sound Bar Speaker sub woofer $19.90 Surround Sound Speaker Bar System Wired Subwoofer Tv Home Theater SpeakersSurround Sound Speaker Bar System Wired Subwoofer Tv Home Theater Speakers $23.99
Wireless Portable Fm Bluetooth Speaker Subwoofer Heavy Bass Sound System PartyWireless Portable Fm Bluetooth Speaker Subwoofer Heavy Bass Sound System Party $38.99 Ds18 Lring8 Vision 8" Rgb Led Ring for Speaker and SubwoofersDs18 Lring8 Vision 8" Rgb Led Ring for Speaker and Subwoofers $23.96
Led Usb Computer Speakers Stereo Bass Subwoofer Wired 3.5mm Jack For Desktop PcLed Usb Computer Speakers Stereo Bass Subwoofer Wired 3.5mm Jack For Desktop Pc $16.98 AudioPipe Txx-Bdc4-15 2800 Watt Car Audio 4 Ohm Speaker Dvc Subwoofer, BlackAudioPipe Txx-Bdc4-15 2800 Watt Car Audio 4 Ohm Speaker Dvc Subwoofer, Black $269.99
New (2) 18" Subwoofer Speakers Pair.Woofer Sub w/ Box.Dj.Pa.Bass.Pro Audio.SoundNew (2) 18" Subwoofer Speakers Pair.Woofer Sub w/ Box.Dj.Pa.Bass.Pro Audio.Sound $299.00 Passive Subwoofer - Vintage Speaker - Unopened Box - Ds 926Passive Subwoofer - Vintage Speaker - Unopened Box - Ds 926 $25.00
Samsung Hw-Km57C Bluetooth Soundbar w/ Wireless Subwoofer, rear speakers.Samsung Hw-Km57C Bluetooth Soundbar w/ Wireless Subwoofer, rear speakers. $200.00 Rockford Fosgate Punch P2D4-12 4-Ohm Dual Voice Coil 12" Subwoofer Bass SpeakerRockford Fosgate Punch P2D4-12 4-Ohm Dual Voice Coil 12" Subwoofer Bass Speaker $189.99
10ft Rca Male Plug to Bare Wire Audio Speaker Subwoofer Hdtv Cable Cord 2Pack10ft Rca Male Plug to Bare Wire Audio Speaker Subwoofer Hdtv Cable Cord 2Pack $8.35 Plans to build Saw118 single 18" subwoofPlans to build Saw118 single 18" subwoof $25.00
Portable Party Bluetooth Pa Loudspeaker Dual Subwoofer With Microphone RemotePortable Party Bluetooth Pa Loudspeaker Dual Subwoofer With Microphone Remote $62.99 to Pyle Plpw15D 15-Inch 2000 Watt Dual 4 Ohm Subwoofer Pyle Audio Bass Speaker pairPyle Plpw15D 15-Inch 2000 Watt Dual 4 Ohm Subwoofer Pyle Audio Bass Speaker pair $81.89
High Powered 10" Passive Subwoofer Tube Speaker 500 Watt Car Audio Sub SpeakerHigh Powered 10" Passive Subwoofer Tube Speaker 500 Watt Car Audio Sub Speaker $89.85 2 Pack Speaker Box Terminal Square Twist Cup Connector Subwoofer Enclosure Wire2 Pack Speaker Box Terminal Square Twist Cup Connector Subwoofer Enclosure Wire $8.75
Vizio M51 5.1 Dolby Atmos Premium Sound Bar with Wireless Subwoofer M51a-H6B .Vizio M51 5.1 Dolby Atmos Premium Sound Bar with Wireless Subwoofer M51a-H6B . $179.99 New 6.5" Dvc Subwoofer Bass.Replacement.Speaker. 4 ohm.Shallow Sub.6-1/2".bmw z3New 6.5" Dvc Subwoofer Bass.Replacement.Speaker. 4 ohm.Shallow Sub.6-1/2".bmw z3 $39.00
10' 800W Car Under Seat Subwoofer Active Power Amplifier HiFi Bass Slim Speaker10' 800W Car Under Seat Subwoofer Active Power Amplifier HiFi Bass Slim Speaker $96.49 12' Portable Fm Bluetooth Speaker Subwoofer Heavy Bass Sound System Party12' Portable Fm Bluetooth Speaker Subwoofer Heavy Bass Sound System Party $99.99
(2) Rockville Rvl69W 6x9" 600w Cast Aluminum Car Subwoofers Sub Woofers(2) Rockville Rvl69W 6x9" 600w Cast Aluminum Car Subwoofers Sub Woofers $109.95 New ListingSonance Outdoor Marine Speakers (6) with Subwoofer Black Used Great conditionNew ListingSonance Outdoor Marine Speakers (6) with Subwoofer Black Used Great condition $144.00
Surround Sound Bar 4 Speaker System Wireless Bt Subwoofer Tv Home Theater&RemoteSurround Sound Bar 4 Speaker System Wireless Bt Subwoofer Tv Home Theater&Remote $39.90 Wireless Bluetooth 5.0 Tv Sound Bar Home Theater 6 Speakers Subwoofer SoundbarWireless Bluetooth 5.0 Tv Sound Bar Home Theater 6 Speakers Subwoofer Soundbar $39.99
Samsung Hw-Q950A 11.1.4ch Soundbar + Wireless Subwoofer & Rear SpeakersSamsung Hw-Q950A 11.1.4ch Soundbar + Wireless Subwoofer & Rear Speakers $1,100.00 Philips Htl1520B-Rb Audio 2.1 Channel Soundbar Speaker – Certified RefurbishedPhilips Htl1520B-Rb Audio 2.1 Channel Soundbar Speaker – Certified Refurbished $63.34
ProX X-Spam20X2Pkg M20 Threaded Deluxe Subwoofer Sub Pole Mounts PairProX X-Spam20X2Pkg M20 Threaded Deluxe Subwoofer Sub Pole Mounts Pair $59.99 Universal 10 inch Metal Mesh Speaker Subwoofer Grill Cover Waffle Style - 2 PackUniversal 10 inch Metal Mesh Speaker Subwoofer Grill Cover Waffle Style - 2 Pack $10.81
Bose Lifestyle Ps28 Iii Powered Speaker System Subwoofer Black #V5046Bose Lifestyle Ps28 Iii Powered Speaker System Subwoofer Black #V5046 $172.98 AudioPipe Txx-Bdc4-12 12 Inch 2,200 Watt Dual 4 Ohm Car Speaker Subwoofer, BlackAudioPipe Txx-Bdc4-12 12 Inch 2,200 Watt Dual 4 Ohm Car Speaker Subwoofer, Black $185.39
Philips Htl1520B/37 Soundbar Speaker with Wireless Subwoofer 2.1 Channel™Philips Htl1520B/37 Soundbar Speaker with Wireless Subwoofer 2.1 Channel™ $69.91 New ListingSonos Subg3Us1Blk Gen 3 Bluetooth Subwoofer at Home Speaker Black New Open BoxNew ListingSonos Subg3Us1Blk Gen 3 Bluetooth Subwoofer at Home Speaker Black New Open Box $659.99
New ListingYorkville Ls801P SubwooferNew ListingYorkville Ls801P Subwoofer $1,499.00 New ListingOmega Audio Complete Speaker System - Alnico Monitors, Subwoofer & Skylan StandsNew ListingOmega Audio Complete Speaker System - Alnico Monitors, Subwoofer & Skylan Stands $2,500.00
Bluetooth 5.0 Home Tv Sound Bar Speaker System Wireless Subwoofer 3D SurroundBluetooth 5.0 Home Tv Sound Bar Speaker System Wireless Subwoofer 3D Surround $40.59 Logitech Z313 50W Compact Satellite Speaker + Subwoofer System 980-000382Logitech Z313 50W Compact Satellite Speaker + Subwoofer System 980-000382 $27.95
Lanzar Maxp64 Max Pro 6.5 Inch 600 Watt Power 4 Ohm Car Subwoofer Audio SystemLanzar Maxp64 Max Pro 6.5 Inch 600 Watt Power 4 Ohm Car Subwoofer Audio System $29.99 Philips Htl1520B/37 Soundbar Speaker with Wireless Subwoofer (Black)Philips Htl1520B/37 Soundbar Speaker with Wireless Subwoofer (Black) $64.00
Home Theater Soundbar Wired Sound Bar Speaker System Subwoofer Stereo Super BassHome Theater Soundbar Wired Sound Bar Speaker System Subwoofer Stereo Super Bass $19.79 Jbl PartyBox 100 Powerful Portable Bluetooth Party Speaker With Dynamic LightsJbl PartyBox 100 Powerful Portable Bluetooth Party Speaker With Dynamic Lights $261.20
(2) Sundown Audio Sa-8 V.3 D2 Subs 8" 500W Dual 2-Ohm Subwoofers Bass Speakers(2) Sundown Audio Sa-8 V.3 D2 Subs 8" 500W Dual 2-Ohm Subwoofers Bass Speakers $461.99 (4 Pack) Speaker Box Terminal Square Twist Cup Connector Subwoofer Enclosure(4 Pack) Speaker Box Terminal Square Twist Cup Connector Subwoofer Enclosure $10.95
Boss Audio Systems Cxx8 600-Watt 8-Inch Car Subwoofer Audio Speaker, SingleBoss Audio Systems Cxx8 600-Watt 8-Inch Car Subwoofer Audio Speaker, Single $32.99 Kicker 41Kmlc Led Light Remote Controller Km Marine Speakers & Subwoofers KmlcKicker 41Kmlc Led Light Remote Controller Km Marine Speakers & Subwoofers Kmlc $32.90
$40.90 Car Audio Dual 12" Vented Subwoofer Stereo Sub Box Ported Enclosure SpeakerCar Audio Dual 12" Vented Subwoofer Stereo Sub Box Ported Enclosure Speaker $84.95
Bose Ps3-2-1 Ii Powered Speaker System SubwooferBose Ps3-2-1 Ii Powered Speaker System Subwoofer $49.99 8" 1500W Fm Bluetooth Speaker Subwoofer Heavy Bass Sound System Party Portable8" 1500W Fm Bluetooth Speaker Subwoofer Heavy Bass Sound System Party Portable $34.95
12" Metal Speaker Subwoofer Sub Woofer Waffle Mesh Grill Cover w/ Clips & Screws12" Metal Speaker Subwoofer Sub Woofer Waffle Mesh Grill Cover w/ Clips & Screws $8.82 Jbl PartyBox 100 Portable Bluetooth Speaker Karaoke Mic Guitar Input Dj LightsJbl PartyBox 100 Portable Bluetooth Speaker Karaoke Mic Guitar Input Dj Lights $399.95
Savard Speakers Hi-Q Series 10" Dual 2 Ohm SubwooferSavard Speakers Hi-Q Series 10" Dual 2 Ohm Subwoofer $262.65 Jbl PartyBox 100 Powerful portable Bluetooth party speaker with dynamic lightJbl PartyBox 100 Powerful portable Bluetooth party speaker with dynamic light $349.95
Infinity Kappa 6.1 Speakers, Ssw-210 Subwoofer & Kappa Video SetupInfinity Kappa 6.1 Speakers, Ssw-210 Subwoofer & Kappa Video Setup $650.00
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Prices current as of last update, 05/14/22 6:20am.

See also...
JBL Subwoofers, Subwoofers, Speakers & Subwoofers
Other Brands, Subwoofers, Speakers & Subwoofers
Sony Subwoofers, Subwoofers, Speakers & Subwoofers

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