A speaker that reproduces the lower end of the audio spectrum. A subwoofer system typically includes a crossover circuit that filters frequencies around 100Hz and under to the driver. In a home theater, the placement of front, center and surround speakers is critical to the listener, but subwoofers are non-directional and can be located in a convenient spot, although corners are not recommended.
Passive and Active Subwoofers
Passive subwoofers contain only the speaker (the driver) and crossover. Active subwoofers are self powered and include their own amplifier. See woofer.
Passive and Active Subwoofers
Passive subwoofers contain only the speaker (the driver) and crossover. Active subwoofers are self powered and include their own amplifier. See woofer.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2009 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- HP Pavilion dv4-1555dx
- Editors' note: This review is part of our 2009 Retail Laptop and Desktop Holiday Roundup, which covers specific fixed configurations of popular systems found in retail stores. With its stylish, Imprint-finish chassis, excellent audio output, and remote control, the 14-inch HP Pavilion dv4-1555dx is best suited for students and others...
- Product reviews 2009-11-20
- HP Envy 15-1050nr
- A big brother to HP's 13-inch Envy 13, this upscale 15-inch model crams more computing power into a midsize laptop than anyone outside of Alienware's m15x. And while that system is a 10-pound monster, the Envy 15 manages to be both slim and reasonably lightweight, partially by ditching the internal...
- Product reviews 2009-11-19
- Vizio announces Black Friday deals on its LCD HDTVs, Blu-ray player
- You may have noticed that Vizio hasn't been prominent in the Black Friday ads leaked online from Best Buy, Target, or Wal-Mart (save for a 26-inch LCD HDTV early special through Wal-Mart). But that doesn't mean the company, which has remained the number-one shipper of HDTVs in the U.S. for...
- Blog posts 2009-11-19
- Zvox Z-Base 575
- Photo gallery:Zvox Z-Base 575Sound bars feel like they've been around forever now, but they're still a relatively new product; consider that the groundbreaking Yamaha YSP-1 debuted back at CES 2005. Since then, the exterior design of the units hasn't changed much, with the vast majority still consisting of a long...
- Product reviews 2009-11-16
- Gateway NV7802u
- Editors' note: This review is part of our 2009 Retail Laptop and Desktop Holiday Roundup, which covers specific fixed configurations of popular systems found in retail stores.Gateway continues to offer some of the best bang-for-your-buck retail laptops. The NV7802u is a fine example: It's a 17-inch wide-screen model with a...
- Product reviews 2009-11-13
- Boston Acoustics Duo-i plus
- Editors' note: The Boston Acoustics Duo-i Plus is nearly identical to the Horizon Duo-i we reviewed a year ago. Not a lot has changed since then aside from the addition of full support for iPhone playback. While the Horizon Duo-i worked with the iPhone, the device had...
- Product reviews 2009-11-13
- Zvox Z-Base 525
- Photo gallery:Zvox Z-Base 525Surround sound and its accouterments tend to dominate a living room, requiring an AV receiver, several speakers, stands, and wires to make the whole thing work. That's why many people choose to skip surround sound, opting instead for the tinny acoustics of their TV speakers. Single-speaker solutions...
- Product reviews 2009-11-11
- Onkyo SKS-HT870
- Onkyo is known for having speaker expertise, even though it's not primarily a speaker company. That's because of Onkyo's success selling home-theater-in-a-box systems HTIBs, which combine a speaker system and an AV receiver in a single box, taking some of the confusion out of putting together your own system. The...
- Product reviews 2009-10-30
- 2010 Infiniti QX56
- Photo gallery:2010 Infiniti QX56Compared with sporting and agile cars such as the Infiniti G37 and FX50, the 2010 Infiniti QX56 is an odd throwback, a journey into yesteryear before the first hybrids strode the earth. Built on a truck frame, it rides like a railway car. The engine, big enough...
- Product reviews 2009-10-30
- Onkyo HT-S7200
- Photo gallery:Onkyo HT-S7200"True" home theater fans may look down on home-theater-in-a-box systems, but sometimes that elitist attitude is unwarranted. The Onkyo HT-S7200 may technically be an HTIB, but that's just because it comes in a giant box; the system is composed of two separate components, the SKS-HT870 7.1 speaker package...
- Product reviews 2009-10-27
- 2010 Scion xB
- Photo gallery:2010 Scion xBWith funky styling and a reputation built around the tuner crowd and the sound-off set, the Scion xB almost single-handedly established the market for little boxy city cars in the North American market. However, the current generation xB faces stiff competition from the likes of the even-quirkier...
- Product reviews 2009-10-27
- Asus K50IJ-RX05
- asus k50IJThe ASUS K50IJ series is one of the latest budget notebooks designed to provide better performance than a netbook and a larger screen for only a modest price increase. ASUS K50IJ-C1 Specifications:Windows Vista Home Premium (SP1, 32-bit)Intel Core 2 Duo processor T6500 Processor (2.1GHz)15.6" 16:9 Wide Format (1366 x...
- Discussion threads 2009-10-25
- Ultrasone Edition 8
- We've reviewed a number of Ultrasone headphones over the years--everything from iPod-inspired iCans to the luxurious HFI-2200s. But the new Edition 8s are, in so many ways, a very different Ultrasone. First, the Edition 8s have, according to Ultrasone, a completely original design that doesn't share any parts with...
- Product reviews 2009-10-21
- Toshiba Qosmio X505-Q850
- Toshiba's Qosmio line has always been the company's experimental playground for high-end systems, from massive gaming rigs to inventive multimedia home theater laptops. While there were a lot of interesting ideas there, you often ended up with slightly overpriced systems with out-of-date video cards or non-functioning Webcam hand gesture controls....
- Product reviews 2009-10-19
- Tritton AX 720
- Among all the video game accessories available today, no other market seems to be expanding as rapidly as the video game headset. With most current-generation consoles able to produce 5.1 surround sound, finding a headset solution to handle such a request is now much easier than before. We've tested...
- Product reviews 2009-10-14
- Malibal Veda series
- It seems that boutique notebook builder Malibal (pronounced mal-la-bull) is ready to see desktops die. The company specializes in custom-built desktop replacements. No thin-and-lights. No ultraportables. No "mainstream" models. The Veda series is its largest, with an 18.4-inch LCD that can be loaded with Core 2 Quad Extreme QX9300 (ours...
- Product reviews 2009-10-02
- Altec Lansing inMotion Classic
- Photo gallery:Altec Lansing inMotion ClassicAltec Lansing has a long history of producing stellar little speaker systems designed around the iPod. Its latest portable speaker, the inMotion Classic ($149), continues the company's tradition of delivering quality audio in a compact and stylish design.DesignThe first thing you'll notice about the inMotion Classic...
- Product reviews 2009-10-02
- Onkyo HT-RC160
- Photo gallery:Onkyo HT-RC160Comparing the features of competing AV receivers is already a difficult chore, but many manufacturers, such as Denon and Yamaha, invite more complexity by offering two lines of nearly identical AV receivers: a custom-install-friendly line and a more-consumer-based line. For better or worse, Onkyo has followed suit with...
- Product reviews 2009-09-30
- 2010 Hyundai Genesis Coupe 3.8 Track w/navigation
- Photo gallery:Hyundai Genesis Coupe 3.8 TrackEarlier this year, we looked at a 2010 Hyundai Genesis Coupe 3.8 with the track package, and criticized it for not making a navigation option available. Hyundai rectified that problem recently, shipping new Genesis Coupe's with an optional navigation package. As we put more emphasis...
- Product reviews 2009-09-30
- Denon AVR-790
- Editors' note: This review is nearly identical to the Denon AVR-1910, as the two products are extremely similar. The only differences are slightly different cosmetics and the AVR-790 lacks IR inputs/outputs and the ability to drive "B" front speakers.The capability to upconvert analog video sources has become standard on midrange...
- Product reviews 2009-09-29
Neighboring Terms
Premier Vendor Content Whitepapers, webcasts & resources from our Power Center Sponsors
- Microsoft Dynamics CRM Online - Free Six-Month Trial for Eligible Organizations
-
Microsoft Dynamics CRM Online provides fast online access, simple contact management and better sales performance for a low monthly cost - the best value on the market today.
- Learn more about the free, six-month trial offer>>
- Save time with automated shipping solutions
-
The Business Essentials Guide provides you useful tools and templates to help grow your business and save you time with automated shipping solutions.
- Visit the UPS Business Essentials Guide
- Keep Up With The Latest In Document Management with The DocuMentor.
-
Doc delivers the scoop on today's enterprise content management, printer maintenance, and all other issues related to document management. It's the DocuMentor Blog.
- Learn more >>
SmartPlanet
- Thought-provoking progressive ideas on diverse topics that intersect with technology, business, and life, and matter to the world at large. Visit SmartPlanet
- More from IBM
-
- How to Drive Better Business Outcomes with Exceptional Web Experiences Download the eBook
- Driving Business Agility through SOA Connectivity & Integration Read the White Paper from IBM
- Linking Decisions and Information for Organizational Performance Read the Tom Davenport study
