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Topic: Subwoofer

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	Subwoofer - Wikipedia, the free encyclopedia
		Subwoofers are usually powered by a high power amplifier, and often an electronic crossover with a Low-pass filter is used to ensure that higher frequencies will not be directed to the subwoofer.
		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.
		The intent of a square subwoofer is to increase the surface area of the woofer's cone.
	en.wikipedia.org /wiki/Subwoofer (2377 words)

	Subwoofer
		Because a subwoofer usually consists of one or two large drivers and no crossover it is a very easy speaker to design.
		With any speaker, but especially with a sealed subwoofer, the enclosure is subject to large changes in pressure caused by the vibration of the drivers it houses.
		I placed fl spikes on the bottom of the subwoofer and used the included metal discs to protect the finish of the base from the spike points.
	www.whatisrazar.com /subwoofer.html (1812 words)

	Review: The Loud Speaker Kit S250 Subwoofer kit
		Subwoofers need to be built like brick ablutions blocks, because they spend a lot of time trying to shake themselves apart.
		This is all very well if you've got a multi-channel surround amp with a subwoofer channel, or if you're happy to deal with the processing and amplification yourself using separate boxes (dusty old receivers are popular candidates for repurposing into subwoofer amps), but it's not a plug-and-go option at all.
		Subwoofers can play low enough that you can put them anywhere and not be aware of their location, but if you get placement wrong some parts of the room will be relatively bassless while others will sound like a car belting down the highway with one window open.
	www.dansdata.com /s250.htm (4005 words)

	Hardware Analysis - Build your own 10" subwoofer, a detailed how-to - Introduction
		Obviously the basic principle of a subwoofer is to extend the bass response of your loudspeakers, or add some extra push to the lower regions of the sound spectrum for home theatre use.
		Due to the limited frequency range a subwoofer operates in, usually between 20 to 100Hz, all that is usually required is a large woofer able to move a lot of air in a properly calculated enclosure.
		The boom you often hear from these subwoofers is caused by a peak in their frequency range that has nothing to do with an accurate reproduction of the recording.
	www.hardwareanalysis.com /content/article/1789 (550 words)

	The placement of a subwoofer
		Regardless of the order of importance between the speaker and the room, it is obvious that as well as the choice of a loudspeaker should be made with the greatest care, the same is valid for the attention to the acoustics of the room and the proper placement of the loudspeakers therein.
		By using two subwoofers instead of one, and placing them in opposite corners on the same distance from the listener, (it is best done in each corner behind the main speakers) there will be an obvious reduction of the room resonances, while the directly radiated sound pressure will increase.
		This is because a subwoofer as a sound generator does not have infinitely high mechanical impedance, it will therefore play the room resonances a little weaker when it is placed in the corner itself, than when it is placed in the sofa and we listen in the corner.
	www.sonicdesign.se /subplace.html (2000 words)

	The Subwoofer DIY Page
		Building your own subwoofer is really not that difficult (especially if you get a relative or friend to do the woodworking for you!), and makes a great starting point for the beginning DIY speaker builder.
		Finally, a subwoofer can be located anywhere in your listening area, which provides you with much more flexibility in positioning your main loudspeakers for good sound.
		The more you are familiar with subwoofer design concepts, the better position you will be in shopping around for a subwoofer (or subwoofers) to suit your stereo or home theatre system.
	www.diysubwoofers.org (364 words)

	Subwoofer
		The installation of a subwoofer underneath the passenger seat is a problematic task especially if the car is equipped with powered seats.
		A slight disadvantage is that the forward distance of the passenger seat has to be limited.
		Also the clamps for the seat forward motion limitation have to be placed on the gear drive that way that when the seat is up the rear tightening screws are just reachable.
	www.boix.de /Subwoofer_eng.htm (302 words)

	Krell Master Reference Series - Master Reference Subwoofer News Release
		The Master Reference Subwoofer is the second Master Reference component designed by Krell C.E.O. Dan D'Agostino, and follows in the tradition established by the Master Reference Amplifier.
		The Master Reference Subwoofer sets the new benchmark in subwoofer performance by delivering a unique combination of low frequency impact and musical detail previously unavailable anywhere.
		With its ability to reproduce the lowest fundamental frequencies of the organ, the window shattering effects from cinema soundtracks, and with aesthetics which bespeak both power and elegance, the Krell Master Reference Subwoofer is truly worthy of its "master reference" heritage and the standard-bearer of state-of-the-art subwoofer performance.
	www.krellonline.com /html/m_MRS_p_MRS_news.html (680 words)

	The Subwoofer DIY Page v1.1 - Choosing a Driver
		As a consequence of this, your subwoofer is probably going to end up being the largest speaker in your living room.
		Please note that there is NO requirement for the impedance of your subwoofer to match the impedance of your main speakers.
		Typically, car audio drivers will not do well as drivers for a home subwoofer system, as they are usually designed to produce a good response when a car's cabin gain is taken into consideration.
	www.diysubwoofers.org /sbc/sbc1.htm (370 words)

	Vanns.com: Audio > Speakers > Subwoofer (Site not responding. Last check: 2007-10-13)
		World-famous subwoofer manufacturer Velodyne made this amp to give you a lot of bass output at a very affordable price.
		If you are looking for a subwoofer to enhance your sound system, create magical musical events, or bring home a true theater experience -- look no further than the OMNI S12.
		With its incredibly low bass reproduction, tremendous fidelity, and extremely high efficiency, it is truly one the most amazing subwoofers on the market.
	www.vanns.com /shop/servlet/category/type/28 (181 words)

	Lolita Subwoofer
		But by adding a subwoofer to your speaker system, you'll be adding impact and realism to recorded music and the wide variety of today's movie formats.
		The subwoofer will connect to your stereo system using RCA cables or speaker wire, both sold separately.
		The Low-Profile 8-Inch 100-Watt Subwoofer's auto power feature keeps the electronics in a standby mode until a signal is detected, which turns the amplifier on instantly.
	www.smarthomepro.com /67001.html (431 words)

	Aperion Audio - INTIMUS 12" Powered Subwoofer
		This 12” sub comes standard with line level and speaker level inputs/outputs, low pass crossover adjustment, phase adjustment, auto on/off switching, 110/220-volt switch, a detachable power cord and a wow factor measuring in the decibels.
		Each S-12 subwoofer is made of rock solid 1" thick High Density Fiberboard (HDF) to eliminate unwanted resonance within the cabinet.
		Perhaps your room is large in square footage, or perhaps you’re just a larger-than-life personality, either way the S-12 will rattle your innards with the heart and soul of everything you watch.
	www.aperionaudio.com /products/product-detail.aspx?id=7 (785 words)

	SVSound - Cylinder Subwoofers
		Your subwoofer will serenely be belting it out at all the right moments.
		Insert one of the included "port blockers" (one is inserted into a port area photo below) and you have taken your subwoofer nearly 5Hz lower in "tune".
		All the advantages of a subwoofer cylinder, with the convenience of an “all in one”, built-in amp.
	www.svsubwoofers.com /subs_pcplus_20-39.htm (2225 words)

	NT-SS4110PB - 10" Inwall Subwoofer Bass Reflex Chamber & Amp - Home Theater Speakers - Home Technology Store - Detail
		The rough-in kit is installed at the same time in construction as the subwoofer enclosure cabinet and other rough-in parts.
		After the wall construction is complete and the drywall is applied, the woofer module is then mounted in the bass reflex enclosure cabinet, and the connections are made to the subwoofer amplifier.
		The amplifier’s subwoofer input is connected to the processor’s LFE or subwoofer output using a line cord.
	www.home-technology-store.com /detail.aspx?ID=1396 (414 words)

	Subwoofer
		The drivers response is calculated by formulas in The Subwoofer DIY Page and Simex BA-150 frequency response is calculated by formulas in Janne Ahonen's homepage.
		Usually the frequency response of subwoofer's low end is improved by decreasing the lowpass filter's frequency.
		After measuring the location where subwoofer will be put and thinking how it should look like, I did some changes to model: made front and back panels little bit bigger than the rest of the enclosure, also changed material according how it's really going to look like.
	www.vahonen.com /audiovideo/diy/subwoofer (987 words)

	Secrets of Home Theater and High Fidelity - Projection Systems Theater PC Case
		This is used for the subwoofer to measure the room response.
		It tells you the current subwoofer volume setting and which Preset (there are several to choose from) you have.
		A blue Velodyne logo at the bottom front of the subwoofer blinks to let you know the remote control signal is being received by the subwoofer.
	www.hometheaterhifi.com /volume_10_4/velodyne-dd-18-subwoofer-12-2003-part-1.html (865 words)

	Home Theater Amplifier \| Subwoofer
		The 240-watt MPS is a home stereo subwoofer that serves as the rock-solid foundation to a top-quality sound system.
		The Anthony Gallo Acoustics MPS Nucleus Micro Subwoofer was designed to provide the highest level of subwoofer performance in the smallest possible space.
		Increase subwoofer volume, or level, by rotating the control clockwise, until the bass output is noticeably louder than the rest of the frequency range.
	www.roundsound.com /manual-mps.htm (2255 words)

	12 Sealed subwoofer
		This is an absolutely passive subwoofer system (with no passive filter at all, so there will be no crossover detail) that powered externally using 35-watt rms power amp (based on TDA 2050 IC).
		Because the EAS subwoofer controller need a sealed subwoofer to work properly so I must block the port and derived to sealed alignment.
		For the subwoofer’s feet I use PVC that diameter about 8-cm, 10-cm long and put original feet-base under the PVC and lastly screwed with long screws for three of them.
	www.members.tripod.com /nanhifi/hasib11.htm (1123 words)

	Kenwood KFC-XW1300DVC Car Audio Subwoofer - Car Audio and Electronics Magazine (Site not responding. Last check: 2007-10-13)
		In the Ford, I found that the subwoofer worked well in most locations, but it really kicked butt with the enclosure placed on the floor between the front and back seat, subwoofer facing the rear of the cab.
		This is a great demonstration song for this subwoofer, as it comes through snappy, with an almost physical impact.
		The performance was transformed into a subwoofer that I would have no trouble recommending to just about anybody that was interested in a great, all around subwoofer -- that is, if you have the budget to power it correctly.
	www.caraudiomag.com /testreports/0312cae_kenwood_kfc_xw1300dvc_car_audio_subwoofer (2577 words)

	eBay Guides - Get more bass with a subwoofer
		A powered subwoofer is a box containing one or more woofers that only reproduce the lowest bass notes, typically no higher than about 150Hz.
		Most powered subwoofers can get their signals through a subwoofer output or other output jack on your amp or receiver.
		A subwoofer can be combined with a quality pair of small speakers to create a wonderful full-range system without big tower speakers.
	reviews.ebay.com /Get-more-bass-with-a-subwoofer_W0QQugidZ10000000000115191 (489 words)

	Vanns.com: JBL E150P Northridge E Series Powered Subwoofer (E150P) Features (Site not responding. Last check: 2007-10-13)
		A Northridge E Series powered subwoofer is just the ticket to really bring your home theater to life.
		The E150P powered subwoofer, like all Northridge E Series speakers uses JBL's exclusive and professionally proven PolyPlas polymer-coated-cellulose-fiber cone material, which combines the sonic neutrality of paper with the added rigidity of the PolyPlas treatment to dampen internal resonance and provide a smooth frequency response with faster transients.
		The solid construction and quality of the E150P powered subwoofer can also be seen in its sturdy gold plated, 5-way binding posts that provide a secure connection and superior signal flow to preserve all the nuances of the original program.
	www.vanns.com /shop/servlet/item/features/549249992?v_c=CJ (487 words)

	Subwoofer :: Online Catalog (via CobWeb/3.1 planetlab2.cs.virginia.edu) (Site not responding. Last check: 2007-10-13)
		Though limited, economic Subwoofer --- to Subwoofer provided in the full Subwoofer in 2001 --- might be useful in identifying a) resource requirements for interventions, and b) interventions that meet public health goals more efficiently than other available options.
		Subwoofer local goals and resources permit, the use of strongly recommended Subwoofer recommended interventions should be initiated or increased.A starting point for communities and health-care systems is to assess current tobacco-use prevention and Subwoofer activities.
		Subwoofer estimates may differ from the previously published estimates in two ways.
	cat56.info.cob-web.org:8888 /subwoofer.html (286 words)

	Subwoofer Cable - high quality, low price sub cables, silver conductor, ofc, custom length
		Cables for Powered Subwoofers, we also have speaker wire for non-powered subs.
		Contrary to what some may think, heavy gauge is completely unnecessary for a subwoofer cable unless rather long lengths are involved.
		Extremely high quality RCA connector cable for connecting Subwoofer to line level (for powered subwoofers) Subwoofer output of your surround sound reciever.
	www.ramelectronics.net /html/sub_cables.html (623 words)

	Subwoofer Placement Guidelines
		And given the understanding that no room is ideal (not even a room with asymmetrical dimensions), the trick is to combine careful subwoofer and furniture placement (with the possibility of using two subwoofers) to more evenly distribute the deep bass frequencies throughout the room.
		But soon as you put a subwoofer into a room, the sound waves bounce back and forth between the parallel surfaces of the room, some combining or "adding," which will emphasize those sounds, and others canceling each other out, which results in a null.
		Adjusting the distance of the couch or chairs relative to the walls and/or the subwoofer relative to the corner will almost always be beneficial in helping smooth out the deep bass heard at several listening locations in the room.
	www.audioholics.com /techtips/setup/loudspeakers/subwooferplacementguide.php (862 words)

	M&K Sound SUBWOOFERS (Site not responding. Last check: 2007-10-13)
		Subwoofers are loudspeakers which reproduce the bass, or lowest frequency notes of the musical spectrum, encompassing the frequencies below about 80 Hz (cycles per second) down to about 20 Hz, and, for some movie and DVD effects, even lower.
		For precise fine-tuning of the critical sonic splice between the subwoofer and the main speakers, there is a phase control, continuously variable between 0 and 180 degrees.
		This is why we offer a 10 year limited warranty on satellite speakers and subwoofer drivers, and a 5 year limited warranty on subwoofer amplifiers and electronic components.
	www.mksound.com /subwoofer.html (1686 words)

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