Introduction: Stereo

Need a cheap stereo for your ipod? This one is a quick project.

Step 1: Parts:

Radio Shack Phono(RCA) Jack 274-346 $3.99
Radio Shack Speaker Terminal 274-631 $4.99
Radio Shack DC Power Jack - 274-1576 $2.59
Radio Shack Stand Offs $2.59
Two old 6V wall wart that fits the power jack. Make sure they are the same.. or buy new

2 x Velleman 3W Mono Amp K8066 $10.00
47K Stereo Volume Knob $3
The box the kits come in.
Optional: 2 LEDS
Optional: 2 resistors (2k Ohm)
Optional: Molex KK Connectors

Step 2: Kits

Follow the instructions to build the two kits. But instead of soldering the terminals on, just solder on wires.

Step 3: Its Dremeling Time.

You want to drill some holes in the box.
First drill your holes for the stand offs so you can mount the two boards. I just used two for each.
And drill a hole for your volume knob.

Step 4: More Holes...

Now its time for the rear hookups to be drilled.
Make your two 1/4" holes for the RCA connectors, two holes for power. 1 for the on/off
Now the radioshack stereo speaker hookup thing fits nicely, just line it up and mark with a marker.
I used molex KK connectors and 22awg solid wire to make everything modular, but you could solder everything together and save a buck

Comments

author
neaton1 made it! (author)2015-09-22

I've been looking for builds like this. This is a basic 2 channel amplifier, not a "stereo". Just the same though, thanks for publicating this.

author
naught101 made it! (author)naught1012015-09-22

What's the difference? Just that there are two mono inputs instead of one stereo one?

author
neaton1 made it! (author)neaton12015-09-23

It's a name... It's like the difference in apples and pears. And by throwing a few parts in, one might not even know a difference, anyways...

author
mpantic panta made it! (author)2013-11-25

Hi. Which speakers are you using with this? Which speaker would be optimal for a 3W amp? Tnx X.)

author
jamgochian made it! (author)2008-06-19

Great instructable. I took your basic idea but drilled a bunch of holes in a cigar box. I used the same Velleman amp, and put it in the box with a speaker, an ipod and a 9 volt. It came out great. Thanks.

speaker.jpginside.jpg
author
joe made it! (author)2008-06-01

I use two 6v wall warts, You could just use one though, I was kinda geeking out on having two separate amps... but its kind of wasteful two use two inputs.

author
Artificial Intelligence made it! (author)2008-05-28

Very cool. I make a lot of Velleman kits and I have a lot of these boxes lying around. I might make this.

author
MervTecksGhost made it! (author)2007-07-28

now does this become a stereo by using 2 mono amps? or is it still mono just 6 watt or what , sorries for the noob question im trying to get better at electronics

author
joe made it! (author)joe2007-08-01

Well you use two separate amps, one for each of the stereo channels. So two mono amps equal one stereo amp. Really really hifi applications use two mono amps for the best sound, this is not hi fi though! Let me know if you have any questions. Thanks, -Joe

author
DjProToJeeX made it! (author)DjProToJeeX2008-04-11

ya real high end audiophile equipment and really eccentric equipment like th 200,000 dollar stereo amps and what not for rich people that dont know better. but ya the 2 mono amps does make for great sound. ida prolly went with a rca out insteada speaker out. but to each there own aplication. A+ instructable added to my group and as favorite

author
joe made it! (author)joe2008-05-21

thanks!

author
MervTecksGhost made it! (author)MervTecksGhost2007-08-01

kool stuff thanks joe, now if i wanna take this and make it a little more hi fi but still try and keep it cheep.... got an seguestions? =D

author
joe made it! (author)joe2007-08-02

Totally, I have two options for you:
The 7w amps from vellemen sound really nice.

Or this stereo kit from velleman that I have and I think it sounds great:
http://www.designnotes.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=K4003&Category_Code=

-Joe

author
MervTecksGhost made it! (author)MervTecksGhost2007-08-02

awesome, now that kit does it come with the power supply? and how hard would it be to feed in some extra imputs and put them on a switch?

author
joe made it! (author)joe2007-08-02

It does not, but your localradioshack has it for $6 radioshack has it for $6! You need a 12v center tap transformer.

It would be easy to add a switch for multiple inputs, you would need a 4 pole switch or for $4 you can this switch from velleman:
http://www.designnotes.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=AVW089&Category_Code=solp

-Joe

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author
MervTecksGhost made it! (author)MervTecksGhost2007-08-02

Joe your freakin awesome =D ill get to work on my own little geek setup =) ty for feeding my insaine geek crack needs lol. ill post pics when im done,

author
Kactapuss made it! (author)2006-07-27

where would i find that 3W amp

author
tacmonkey made it! (author)tacmonkey2007-07-26

Check http://www.velleman.be/ for your nearest retailer.

author
gnarkilljboy made it! (author)2007-06-12

It says to follow the istructions, but where are they?

author
tacmonkey made it! (author)tacmonkey2007-07-26

Eh, those would be the instructions that come with the velleman 3W amplifiers.
http://www.velleman.be/

author
Brett made it! (author)2006-10-11

This is a great project and instructable. If I ever have some time this is my next project in line!

author
VIRON made it! (author)2006-08-05

A boombox in the trash might have a broken antenna or tape deck, missing power cord and leaky batteries... but usually a good loud amp... and speakers too. (Unless roaches are living in it.)

author
Todumb4u made it! (author)2006-07-03

Wow, awesome stuff there man! Thanks a heap!

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Bio: I like to tinker with just about anything, sometimes it works out in the end. Have fun looking at the projects, try tearing something open ... More »
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