Subwoofer-specialized speaker

A subwoofer is a speaker that produce low frequencies sound(20hz to 200hz),or called bass.Subwoofer using a higher power to work.The more the radius of the subwoofer cone,the more the power is needed to work .Example like a 3.5' subwoofer need approximate 10W of power.Larger subwoofer like 6.5',it need approximate 30W of power.If using a larger subwoofer in home theatre system,its radius is larger than 6.5 example like 8.0' and higher or even larger like 10',12' or 15' in a car audio system.Its power handling is approximate like 75W in a home theatre system or even higher like 250-800W in a car audio system.A subwoofer is powered by an amplifer or called receiver.Large subwoofer need a high power amplifer to work.If a large subwoofer work with a low power amplifer,it'll cause some clipping sound during playback.And also if using a high power amplifer but a smaller subwoofer,it'll produce distort sound or even it'll blow up.Here is an example of structure of a subwoofer.

Click it to see it clearer.

Here is an example of high excursion subwoofer.It's surround is bolder than a normal subwoofer.It's use to produce deeper bass in a bigger room or places.It's common use in a car audio system,so its power handling is higher like 800W or 1100W.High excursion means its cone can vibrate within a larger depth,that why it's using higher power.

Exam is over!!!!

Actually exam isn't over,just all the important subject over liao,left seni,sivik n pjk......wheeww,I can play half life 2 liao,hahahha,so hapy la!!

But,I cant find my Geografi textbook,damn,Nov 2 all textbook are going to be return,got 17book must cari,now got 14 book found,left a geo,Pahlawan blablabla,n another I forgot wat it is....

N today,I go to Badmintcourt today,but got ping pong competition wor,buddies haven come,so I wait lo,I though they play fool on me....

after they come ,I tell them court cant use ,so we go to JK maju eat breakfast after 5 or 7 min discussing.Daniel's nasi lemak is the fastest come,and ours....he finish his nasi lemak liao then ours come,=.=,damn pekcek de lo,want to criticize them,lol,I learn a new word,criticize,means giv bad feedback to any shop or restaurant.


Then we go find some PC games at the same row of the restaurant shop.We buy a toy car each of us,they use plastic,but I dont,today is no plastic day mah...but I so siasui bcoz holding a toycar case on the road go to daniel house to wait for my father come,n finally at tat time I tell my father wat hapen to the  court n  the story of a trip to JK maju.Bright star skipped,hahaha!!!

Left 1 Dead

Im dead,Im dead.......why paper 2 cannot use calculator,how I calculate square root,cube root in 1,2,3,4,5,6,7,8 n 9 hundred................I found out a paper 2 question tat must count 3(3016),walaoA,how to count without a calculator.........................why must separate us,T.T


Now left one day then exam,Geo,Sej,Sc,Mt,Khb,all haven cover yet,my last hope is my favourite action:Last Minute Reading(L.M.R.).......

3days bfour exam n ...half life 2 again, hahahaha

3days bfour exam,fri,sat n sun then exam coming,i planned to read each subject per one day,but....tuition, distraction n half life make me no mood to read liao lo.....
mr.szy(sze young,lazy to write his name)gimme the half life 2 liao but cannot work,my pendrive la,said 8gb,but 7.47gb files cannot save,haih....now juz wait till friday then i go copy episodic file
FACEBOOK got a new game:CSI:crime city,haha,now I lv 3 only...

my pendrive 7.40GB,half life 2 7.47GB,WTH!!!!

Arghh!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Half life 2 I hate U!!!
I went to Sze Young's house again yesterday,luckily I saw Azman start chasing me n I start to run faster.Finally,whewww,he lost me,hahahaah!!!
I started editting sumthing in half life2 when inside his house,his new PS3,waaa,so big ,2x larger than my PS2,wireless controller leh...he wan me teach him B.Cina,ok lo,Im playing half life 2 while teaching him,Im too gao until I can make a flare pistol inside HL2,his hl2 got problem de,cannot press right button,if press,windows show"this programmed cannot be run",I tersilap press more than 3 times,vry irritating....
I wan copy hl2 liao,but....U see the title then u noe..ok lo,I dun copy one file,it seem like the file not being use so i chosen it to be 'tersingkir' in my half life2 'copitation'.Half hour ago,I promise him to play PS3,suddenly his family when back,=.='',luckily his sister know me,my sister is his sister's friend,our sisters are friend!!!
we firs play fifa,I beginneer mah,so the score is 6:0,so siasui....BUT,when I play army 2 v him,I luckily took a headshot on a enemy n save his life ,hahahaah,I also the firs one find out a useable sentry gun,but no enemy to shoot so I juz luan luan shoot only lo,when we wan went back to skul,I go see my hl2 copy orady or not,but,50% only,it took my time almost half hour liao juz 50%,my pendrive speed is 4MB/s,but it showed 1.01MB/s,it too kiam pa until I can remember its speed...daniel(his nickname) said he copy for me and he will return to me on Monday,ok lo,then i tersilap again press cancel.....
his father took me n him to skul ,waa,so nice,firs tim on his father's car....




My pendrive so small dunno he will lost it or not,vry risau leh,8GB leh(7.40,actually...)

New pendrive!!!!!

My mum gimme a new pendrive,8GB,so hapy la,bcoz i can copy half life 2 from Sze Young(half life 2 lost coast need password,i forgot it is cant found out,so pissed off with the download website)

It is as small as my thumb....my old pendrive given to my sister,her pendrive lost liao.She always finding her cell phone,haih....

To all the blogger user

Do u see it???Beautiful background....How I do tis,damn easy la

1.go find any image u want on google image.If u want to find wallpaper like mine,u can go to tis website:http://www.wallpaper-place.com/

2.Open or enlarge the picture or wallpaper on a new tab

3.Copy the link or url on the new tab(must hav .jpg at the last part of url) n...wait,forgot one step.Open ur blog n click design,if u haven sign in pls sign in firs.Then click design again inside the design(hope u noe wat Im saying).After that,click edit html,it will open a document sumthing like notepad.
4.Hard part,not for u,is for me,hard to explain...
  The document will like tis:



<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns='http://www.w3.org/1999/xhtml' xmlns:b='http://www.google.com/2005/gml/b' xmlns:data='http://www.google.com/2005/gml/data' xmlns:expr='http://www.google.com/2005/gml/expr'>
  <head>
    <b:include data='blog' name='all-head-content'/>
    <title><data:blog.pageTitle/></title>
    <b:skin><![CDATA[/*
-----------------------------------------------
Blogger Template Style
Name:     
Designer: pYzam Team
URL:      www.pyzam.com
----------------------------------------------- */


/* Variable definitions
   ====================
   <Variable name="bgcolor" description="Page Background Color"
             type="color" default="#000000" value="#000000">
   <Variable name="textcolor" description="Text Color"
             type="color" default="#ffffff" value="#ffffff">
   <Variable name="linkcolor" description="Link Color"
             type="color" default="#81e7ff" value="#81e7ff">
   <Variable name="pagetitlecolor" description="Blog Title Color"
             type="color" default="#81e7ff" value="#81e7ff">
   <Variable name="descriptioncolor" description="Blog Description Color"
             type="color" default="#81e7ff" value="#81e7ff">
   <Variable name="titlecolor" description="Post Title Color"
             type="color" default="#81e7ff" value="#81e7ff">
   <Variable name="bordercolor" description="Border Color"
             type="color" default="#1f1f1a" value="#1f1f1a">
   <Variable name="sidebarcolor" description="Sidebar Title Color"
             type="color" default="#ffffff" value="#ffffff">
   <Variable name="sidebartextcolor" description="Sidebar Text Color"
             type="color" default="#ffffff" value="#ffffff">
   <Variable name="visitedlinkcolor" description="Visited Link Color"
             type="color" default="#ffffd4" value="#ffffd4">
   <Variable name="bodyfont" description="Text Font"
             type="font" default="normal normal 100% Georgia, Serif" value="normal normal 100% Georgia, Serif">
   <Variable name="headerfont" description="Sidebar Title Font"
             type="font"
             default="normal normal 78% 'Trebuchet MS',Trebuchet,Arial,Verdana,Sans-serif" value="normal normal 78% 'Trebuchet MS',Trebuchet,Arial,Verdana,Sans-serif">
   <Variable name="pagetitlefont" description="Blog Title Font"
             type="font"
             default="normal normal 200% Georgia, Serif" value="normal normal 200% Georgia, Serif">
   <Variable name="descriptionfont" description="Blog Description Font"
             type="font"
             default="normal normal 78% 'Trebuchet MS', Trebuchet, Arial, Verdana, Sans-serif" value="normal normal 78% 'Trebuchet MS', Trebuchet, Arial, Verdana, Sans-serif">
   <Variable name="postfooterfont" description="Post Footer Font"
             type="font"
             default="normal normal 78% 'Trebuchet MS', Trebuchet, Arial, Verdana, Sans-serif" value="normal normal 78% 'Trebuchet MS', Trebuchet, Arial, Verdana, Sans-serif">
*/


/* Use this with templates/template-twocol.html */


body {
  background:$bgcolor;
  margin:0;
  color:$textcolor;
  font:x-small Georgia Serif;
  font-size/* */:/**/small;
  font-size: /**/small;
  text-align: center;
  background-color:#000000; 
background-image: url(http://www.wallpaper-place.com/images/wallpapers/where_the_wind_talks_hd_widescreen_wallpapers_1280x800.jpeg); 

Tis is mine for an example,it has more document under it,i juz stop at the part u need to edit.
At the last sentences,it will show: background-image: url(XXXXXXXxxxxxxxxxxxXXXXXXXXXXXXX)
Copy the url or link from the new tab n overwrite,paste inside the ( )

5.Save ur settings n view blog,hope it is work for urs