Simplest Audio Amp with 10 Watts - need help

sellerr2d2 · 01:59 AM

Hi,
I am trying to build a very simple stereo audio power amplifier that will take audio input from my MP3 player and drive 2 external speakers. The output should be 10 watts RMS or more. I want to use the least possible number of external resistors and capacitors or other components. I would also like to get the IC chip as a free sample. So, it has to be manufactured by TI, Analog Devices or one of the companies that provide free ICs. The input power supply should be either single 5 volts DC from a PC USB port or single 12 volts DC from a car battery.
Any suggestions on which IC chip to use?
Your help will be much appreciated.

HFGuy · 13th January 2012, 02:17 AM

Search for gainclone, you cannot beat the simplicity of a chip amp.

GloBug · 13th January 2012, 02:22 AM

Yes they are nice easy amps. (Chipamps)
It will give you more power then you need, cheap and easy.
You will actually have a decent amp when your done, rather then just a project.

Make sure you have a ".org" email account if your looking for free chips.

Lot's of gainclone/chipamp schematics on here for you, or order a kit like this: DIY Chip Amplifier Kits, PCB's, Components and Information.

sellerr2d2 · 13th January 2012, 02:43 AM

Thanks for your comments. I searched for "gainclone" on this forum and it returned hundreds of threads. Can you please give me more specific info, perhaps a link to a good thread that has the IC information, circuit schematic etc.?
I also checked the link from GloBug. It takes me to a page where they sell amp kits. I am not interested in that. I want to build by own super simple amp, not buy one.
I am a student and have a .edu email address. Will it work for free samples?

system7 · 13th January 2012, 02:46 AM

There's a lot of useful stuff available with Velleman Kits. This is a Audio Amp 2X10W using TDA2616. They supply schematics too, as PDFs.

Velleman, Inc.

This is a 2X 5W MP3 player amp. Runs off DC:

Velleman, Inc.

Cheap as chips, those kits! Don't know quite how that ties in with getting the IC free though.

sellerr2d2 · 13th January 2012, 03:01 AM

Thanks for the Velleman link. Where can I get a free sample of TDA2616? I am a student and have a .edu email address.

GloBug · 13th January 2012, 03:31 AM

Here is the link for an Audiosector chipamp. DIY Chip Amplifier Kits, PCB's, Components and Information.

If your just itching for a project, go take something apart like an old boombox or PC speakers, look the chip up and go from there. FREE

If you are going to spend a few bucks, as I said the "gainclone" project will get you a usable stereo amp as opposed to a project novelty.

system7 · 13th January 2012, 05:19 AM

All you need really here is a headphone to RCA phono adaptor, of course.

Available in the UK from Maplin:
http://www.maplin.co.uk/2-phono-to-3...eoadaptor-1218

Means you can plug your player into any stereo amplifier's Phono inputs with the aid of a phono lead. I do this with a DAB radio and it works well.

It's a bit of an ask to get a serious amplifier powered by a USB cable's 5V supply. I don't think many USBs do enough power.

madtecchy · 05:56 AM

Quote:

Originally Posted by sellerr2d2

Hi,
I am trying to build a very simple stereo audio power amplifier that will take audio input from my MP3 player and drive 2 external speakers. The output should be 10 watts RMS or more. I want to use the least possible number of external resistors and capacitors or other components. I would also like to get the IC chip as a free sample. So, it has to be manufactured by TI, Analog Devices or one of the companies that provide free ICs. The input power supply should be either single 5 volts DC from a PC USB port or single 12 volts DC from a car battery.
Any suggestions on which IC chip to use?
Your help will be much appreciated.

Hi . You wont be be able to get 10 Watts RMS plus from a usb port.
5 volts at a max of 500mA just wont do it.. So that leaves you 12 volts from a car battrey this can also supply lots and lots of current . It would be a very good idea to use 4 Ohm loudspeakers . Forget the gainclones at this voltage . you need to look for an ic that will run on a single rail supply Also it would be better if it was a BTL chip. With all this in mind a chip wich is suited to car audio will be the easiest cheapest way to deal with what you need.

Regards Ian

sellerr2d2 · 13th January 2012, 03:55 PM

Thanks for your comments. Where can I get a free sample of TDA2616?

13th January 2012, 01:41 AM	#1
sellerr2d2 diyAudio Member Join Date: Jan 2012	Simplest Audio Amp with 10 Watts - need help Hi, I am trying to build a very simple stereo audio power amplifier that will take audio input from my MP3 player and drive 2 external speakers. The output should be 10 watts RMS or more. I want to use the least possible number of external resistors and capacitors or other components. I would also like to get the IC chip as a free sample. So, it has to be manufactured by TI, Analog Devices or one of the companies that provide free ICs. The input power supply should be either single 5 volts DC from a PC USB port or single 12 volts DC from a car battery. Any suggestions on which IC chip to use? Your help will be much appreciated. Last edited by sellerr2d2; 13th January 2012 at 01:59 AM.

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13th January 2012, 02:17 AM	#2
HFGuy diyAudio Member Join Date: Sep 2004 Location: Toronto, Ontario	Search for gainclone, you cannot beat the simplicity of a chip amp.

13th January 2012, 02:22 AM	#3
GloBug Banned Join Date: Jun 2011	Yes they are nice easy amps. (Chipamps) It will give you more power then you need, cheap and easy. You will actually have a decent amp when your done, rather then just a project. Make sure you have a ".org" email account if your looking for free chips. Lot's of gainclone/chipamp schematics on here for you, or order a kit like this: DIY Chip Amplifier Kits, PCB's, Components and Information.

13th January 2012, 02:43 AM	#4
sellerr2d2 diyAudio Member Join Date: Jan 2012	Thanks for your comments. I searched for "gainclone" on this forum and it returned hundreds of threads. Can you please give me more specific info, perhaps a link to a good thread that has the IC information, circuit schematic etc.? I also checked the link from GloBug. It takes me to a page where they sell amp kits. I am not interested in that. I want to build by own super simple amp, not buy one. I am a student and have a .edu email address. Will it work for free samples?

13th January 2012, 02:46 AM	#5
system7 diyAudio Member Join Date: Aug 2008	There's a lot of useful stuff available with Velleman Kits. This is a Audio Amp 2X10W using TDA2616. They supply schematics too, as PDFs. Velleman, Inc. This is a 2X 5W MP3 player amp. Runs off DC: Velleman, Inc. Cheap as chips, those kits! Don't know quite how that ties in with getting the IC free though.

13th January 2012, 03:01 AM	#6
sellerr2d2 diyAudio Member Join Date: Jan 2012	Thanks for the Velleman link. Where can I get a free sample of TDA2616? I am a student and have a .edu email address.

13th January 2012, 03:31 AM	#7
GloBug Banned Join Date: Jun 2011	Here is the link for an Audiosector chipamp. DIY Chip Amplifier Kits, PCB's, Components and Information. If your just itching for a project, go take something apart like an old boombox or PC speakers, look the chip up and go from there. FREE If you are going to spend a few bucks, as I said the "gainclone" project will get you a usable stereo amp as opposed to a project novelty.

13th January 2012, 05:19 AM	#8
system7 diyAudio Member Join Date: Aug 2008	All you need really here is a headphone to RCA phono adaptor, of course. Available in the UK from Maplin: http://www.maplin.co.uk/2-phono-to-3...eoadaptor-1218 Means you can plug your player into any stereo amplifier's Phono inputs with the aid of a phono lead. I do this with a DAB radio and it works well. It's a bit of an ask to get a serious amplifier powered by a USB cable's 5V supply. I don't think many USBs do enough power.

13th January 2012, 03:55 PM	#10
sellerr2d2 diyAudio Member Join Date: Jan 2012	Thanks for your comments. Where can I get a free sample of TDA2616?

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