Amp tinkerers and people who aren't afraid of 700 volts or so in here....

Moderators: Slowy, Capt. Black

User avatar
BY Shimmer
#781442
Yesterday I made a little breadboard guitar amp - <0.5W of solid state power from a LM386 Chip, powered from a 9V battery.
I followed the instructions from:
http://www.ampmaker.com/infocentre/forum-37.html

I used an old Sony bookshelf speaker. I removed the top two speakers leaving just the larger bottom one. The guitar input goes where the top speaker used to be, and the LED is where the small tweeter used to live. The 9V input is on the lower left when facing the amp. Not as retro looking as cigar box amps, but still up-cycling!
The breadboard showing the huge number of components!
small20180410_164101.jpg
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Mounting the board.
small20180410_164052.jpg
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The finished product :)
small20180410_170838.jpg
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User avatar
BY Shimmer
#781459
Single coil wrote:Dank

Is it any good?


Yeah - surprisingly good for what it is. And louder than I though it would be.
It is a bit raspy (which I like) but also cleans up a bit with the guitar volume wound down. Sounds best playing some crunchy blues or big Malcolm Young style open chords.
User avatar
BY Shimmer
#781480
sizzlingbadger wrote:Very cool, maybe high freq tone cut control would help.

Thanks - a fun little projects, especially for those of us afraid of 240V!
Yeah - there is an option for the NoSo Plus which includes adding a pot and JFET boosting (?)
That actually has an option to add a switch to the bass frequencies... (not the highs.?)
http://www.ampmaker.com/infocentre/thread-161.html
User avatar
BY Danger Mouse
#781546
Shimmer wrote:
codedog wrote:Wonder if it sounds anything like https://smokeyamps.com/

Yeah it does a bit. Just looking at the circuit board of those amps online - looks very similar


If you trawl the forum Shimmer posted in the first post, they actually point interested people in the direction of the smokeyamps vids for tone clips.
User avatar
BY sty
#781547
Shimmer wrote:The finished product :)
small20180410_164101.jpg


Well done, that's probably higher quality and better sounding than my first practice amp from the early 80s ;)

(my old amp was all plastic, a small spearer and a couple of transistors. Mind you the Kay catalog guitar wasn't really much better)
User avatar
BY Shimmer
#781553
Danger Mouse wrote:I'm really impressed! Did you order a kit, or just source the components locally?

Thanks - I was pretty please with how it turned out.
I just bought the bits locally but followed the instructions on the ampmaker website (pretty cool imo how he provides all the necessary info there for free) .
The components were pretty cheap - the little breadboard was the most expensive. I didn't have any solid jumper wires, so I actually used those paper clips you can get with a plastic-y covering snipped to size :)
User avatar
BY Danger Mouse
#781555
Shimmer wrote:
Danger Mouse wrote:I'm really impressed! Did you order a kit, or just source the components locally?

Thanks - I was pretty please with how it turned out.
I just bought the bits locally but followed the instructions on the ampmaker website (pretty cool imo how he provides all the necessary info there for free) .
The components were pretty cheap - the little breadboard was the most expensive. I didn't have any solid jumper wires, so I actually used those paper clips you can get with a plastic-y covering snipped to size :)


Nice! I may have to try the same.

I say try because it most likely will end up as a bag of components tucked away in my drawer next to the bag of components that is the FuzzyBro tube screamer kit that I bought several years ago and will "get around to building eventually" :lol:
User avatar
BY Shimmer
#781556
Danger Mouse wrote:
Shimmer wrote:
Danger Mouse wrote:I'm really impressed! Did you order a kit, or just source the components locally?

Thanks - I was pretty please with how it turned out.
I just bought the bits locally but followed the instructions on the ampmaker website (pretty cool imo how he provides all the necessary info there for free) .
The components were pretty cheap - the little breadboard was the most expensive. I didn't have any solid jumper wires, so I actually used those paper clips you can get with a plastic-y covering snipped to size :)


Nice! I may have to try the same.

I say try because it most likely will end up as a bag of components tucked away in my drawer next to the bag of components that is the FuzzyBro tube screamer kit that I bought several years ago and will "get around to building eventually" :lol:

At least with this one, there are so few components. And using the breadboard means there is potentially no soldering - just plug and play :)