Techvision srilanka

sub woofer enclosures

for the guys who are interested in buying audio systems for you PC's

I reckon Microlab Speakers.they are the only sub woofer system witch has "band pass"
air went system.unlike all the other speaker systems you find in unity plaza witch is this type down below.plus the only satalite speakers witch had the equal balance between mid range (1Khz upwards) and hi range (20Khz downwards)
you can buy a good 2.1 system for about 5k(bit expensive than the normal 3k 4k brands) for the people who thinks DIY contact me through email or PM for i have a collection of sub woofer enclosures and sub woofer amplifier circuit diagrams...


Different types of boxes will produce different types of bass:

Sealed boxes: For deep, precise bass
http://www.diysubwoofers.org/images/site/sealed.gif

A sealed box is an airtight enclosure housing your subwoofer. A sealed box is best for any music that demands tight, accurate bass. Expect flat response (not excessively boomy), deep bass extension, and excellent power handling. Since a sealed enclosure tends to require more power than a ported box, use an amplifier with ample wattage for optimum performance.

Ported boxes: For forceful bass
http://www.diysubwoofers.org/images/site/ported.gif

Ported boxes use a vent (called a port) to reinforce low bass response. You get more output than you would from a sealed box at any given amplifier wattage. Some people prefer the sound of ported boxes for rock, heavy metal, or any hard-driving music. Ported boxes can deliver deeper bass than sealed boxes, though they need to be much larger than sealed enclosures to accomplish that.


Bandpass boxes: Maximum slam!
http://www.diysubwoofers.org/images/site/4thordbp.gif

Bandpass boxes are a special type of ported box designed for maximum slam. The woofer is mounted inside a dual-chambered box (one chamber sealed, the other ported), with the sound waves emerging from the ported side. The sound that comes out of the port is extra loud within a narrow frequency range.

Because bandpass boxes are super efficient within that range, they tend to boom. Their aggressive sound is great for rap, reggae, and hard rock. Not all subwoofers work well in bandpass boxes, though;