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Subwoofers, or "woofers," have always seemed quintessentially masculine to me. I suppose it's because of all the young men I've met who have shown me their car trunks, the entire interiors of which have been taken up with gigantic speakers. Yet as silly as it can sometimes seem, the subwoofer is an important part of any high quality music reproduction system.

First created in the 1960s, the subwoofer was developed in response to complaints about a lack of bass response in electrostatic speakers. For the first decade or so, these loudspeakers were known only to music professionals and the truly dedicated fans. Then, in 1974, the movie Earthquake was released in Sensurround. In the seventeen theatres where it was shown, six very large subwoofers driven by a pair of 1600 watt amplifiers were used to simulate the sounds and effects of an actual earthquake. This movie and its use of sound were responsible for bringing subwoofers to the public's attention.

Then in the late 1980s, the advent of the commonly used compact cassette made it possible to add more low frequency content to recordings. The result was that subwoofers became increasingly popular in domestic settings. Since that time, there has been an ever increasing popularity for subwoofers in home stereo systems, home theatre audio systems, and car audio systems. Today, it is almost impossible to go to a professional concert or music venue that does not utilize the unmistakable resonances of at least one subwoofer.

The introduction of Sensurround sparked a trend of subwoofer installation in cinemas. That system was succeeded by the Dolby Stereo 70 mm Six Track, which was in turn followed by Altec's dedicated cinema subwoofer model, the 8182. Today, the THX certification qualifications define the parameters for audio systems in the cinema, including subwoofer requirements. These requirements help to ensure that when "the audience is listening," they enjoy what they are hearing.

In addition to commercial applications, almost all modern home theatre audio systems feature a subwoofer supplemented by two to five small "satellite" speakers. The advantage of having a subwoofer as part of an audio system is that it allows the satellite speakers to be smaller without sacrificing low frequency capability. In a domestic setting, the subwoofer is usually separated from the other speakers and is often hidden in a cabinet or other piece of furniture. For optimum low frequency sound, experts recommend that the subwoofer be placed in a corner of the room, far from large room openings and close to the listener.

As previously mentioned, the automobile is the other popular place for subwoofer use among the general populace. Because of their size, most car subwoofers end up in the back seat or, more commonly, in the trunk. In such an application, due to the typically small space of a car's interior, it is actually possible for a subwoofer to produce dangerously high levels of sound pressure. Over time, such situations can lead to hearing loss or tinnitus, which is usually indicated by an unidentifiable ringing or buzzing in an individual's ears.

Victor Epand is an expert consultant for guitars, drums, keyboards, sheet music, guitar tab, and home theater audio. You can find the best marketplace at these sites for guitars, drums, keyboards, sheet music, guitar tabs.

Do It Yourself SubWoofer Box, Is It Worth It?

Sure you could build your own subwoofer box - but how much do you really save?  First you have to design the subwoofer box and make sure everything is just right. Then you have to drive around town finding the materials: Wood (MDF), carpet, glue, caulking and connectors (see estimated material costs below).  Then you have to cut your materials, assemble the subwoofer box and then hope everything comes together as planned (Murphy’s Law not withstanding).  The last thing you want to do is miscalculate and have to start over.  Let’s just assume everything goes right up to this point in the project – now you are faced with the challenge of carpeting an odd shaped subwoofer enclosure.  Best case scenario you are successful and accomplish this entire process in under 10 hrs – best case!  Now your weekend is half over when you could have been out enjoying your tunes with our custom built, guaranteed to fit Subwoofer Box.  Is your “spare” time not worth at least $15/hour? That subwoofer box you just built just cost you $150+ and that doesn’t include any materials*. 

Here’s a rough estimate for a typical DYI subwoofer box:

* Estimated Material Costs:

Single sheet of MDF =          $25
Glue =                                  $15 (high end wood glue)
Nails or staples =               $  5 (16 to 18 gauge)
Terminal(s) =                      $  3
Caulk to seal seams =        $  5
Carpet -                                           $35
Total Estimated Material Cost =       $88.00

Estimate labor cost                          $150

Tools Required:

Table Saw (ideal)
Jig Saw (or router)
Nail Gun (ideal)
Hole Saw (for terminals)
Clamps

Subwoofer boxes can be purchased online for reasonable prices.  Many companies build Subwoofer enclosures for less money because these boxes are built hundreds at a time from templates.  They also save on material costs because they buy in bulk from wholesalers.

You can easily order custom Truck Subwoofer Boxes or Car Subwoofer Enclosures online. For example, at SuperCrewSound.com, you can select from a variety of subwoofer boxes. Theses subwoofer boxes are custom built and professionally designed to fit specific vehicle models.

So before you contemplate on building your own subwoofer box, you might want to consider leaving the work to the professionals - enjoy your time, save money and get a better subwoofer box in the process.  Makes sense doesn’t it?

About the Author

Mark Markham is the owner and president of SuperCrewSound Inc. and has been specializing in Custom Subwoofer Boxes since 2004. Mark has over 20 years of experience as a Manufacturing and Quality systems Engineer and has brought that experience to SuperCrewSound Inc. Mark has been a car audio enthusiast for over 25 years

How many watts are these subs?

I have a 1800W amp and want subs. I found some subs on ebay, but it says 1200W. Is it 1200W per sub, or for both subs?

http://cgi.ebay.com/ebaymotors/NEW-PAIR-1200W-HIFONICS-HFi12D4-12-Car-Subwoofers-Subs_W0QQcmdZViewItemQQ_trksidZp3286Q2ec0Q2em14QQhashZitem5ad3eace60QQitemZ390102437472QQptZCarQ5fSubwoofersQ5fEnclosures

They are 600 Watts each; max; 300 RMS. "Hifonics HFi12D4 12" 600 Watt Subwoofer 4 Ohm DVC New!"

OFFICIAL WEBSITE; they are 300 watts RMS; 600 MAX
http://www.hifonicsusa.com/Hifonics_HFi_Subwoofers.html

MB Quart to Show New Products and a Retail-Specific Line at 2011 CES
Thursday, December 16, 2010 -- MB Quart has announced that it intends to introduce a number of new products at the 2011 International CES.

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