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Anonymous Poster #1

Circuit to Amplify Speaker Sound

09/16/2011 3:44 AM

Hello
If I allowed you ,i need circuit to amplify the sound of my speaker that 4oms & 4.5w.
Mean
my speaker its sound is low because i take the signal from
pic direct.
so,i need a circuit to make the signal from pic adapt whit my speaker.
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Anonymous Poster #2
#1

Re: Circuit to Amplify Speaker Sound

09/16/2011 5:43 AM

Use a transistor based amplifier
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abkrenoo14
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Join Date: Sep 2011
Posts: 1
#2

Re: Circuit to Amplify Speaker Sound

09/16/2011 5:45 AM

how show me circuit plz
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Holzfeller
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Hobbies - Musician - New Member United Kingdom - Member - New Member Engineering Fields - Mechanical Engineering - New Member Engineering Fields - Transportation Engineering - New Member

Join Date: Mar 2007
Location: England
Posts: 951
Good Answers: 48
#3

Re: Circuit to Amplify Speaker Sound

09/16/2011 6:40 AM

You could use a Tripath D-class amp. You can get these in kit-form, fully assembled boards or complete amps quite cheap on Ebay, or from people like 41hz (http://shop.41hz.com/shop/category.asp?catid=13) (sorry, link no longer available), or you can get other kits (eg Velleman) from people like this.

You could try googling something like "DIY PC amp schematic" and you'll find no end of circuits like this and http://sound.westhost.com/projects-1.htm (Sorry! Link no longer available.)
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