Today my partner worked so I got to play..... If I messed anything up or could have done it better please let me know..... The history is that I had a coor's light beach (beer holder/cooler) that had this board inside that let you hook up your music device using a 3mm plug in. I ripped it out and used the speaker in a cigar box amp. As it is NOW I put it in a cigar box using 2 4 ohm speakers wired to 8 ohms. I cut the battery black and soldered each end to an off on switch I had pulled from something else (it works).
As you can see top center is a piezo type speaker..... on the board itself the speaker wires and the piezo thingy are soldered to separate location on the board..... as this is toooooo loud for home use I want to add a volume control that is where I am lost......
I know it is tough just looking at a pic, but can you send me in the right direction to add the volume control, I would like the volume control to control all three speakers..... PLEASE keep in mind I am a total ... I would use the word idiot (but I got this far on my own)...... so please keep in very simple..... even if you have to pull out your crayons.....
Replies
Scott's sketch is on the money, all you are doing is adding a vol pot to the input line, plus he added a 1/4" jack socket in place of the 1/8" one you've cut off, your speakers are already hooked to the amp, so that configuration must be ok, i think you might be over thinking it, the only wires that need attention are the ones where you've cut the 1/8" socket off Iassume the 2 wires going down and right are to your switch and battery connection, is so, the 2 going down and left are most likely the mp3 input line, if so, that is where you hook in the vol pot, then to your new 1/4" jack socket
Looks like this amp board depended on the MP3 player's internal volume control instead of one directly integrated on the board. No worries...
That should be it.
that's much simpler than mine Scott, i never thought of controlling the signal before the amp, as i forgot that the source was from outside
Great darryl if you get it can you interpret it for me....... lol
I just don't see how the response fits into my question regarding the three speakers....
I thought the response fit the question as it was asked. You wanted to know how to add volume control because it was too loud for home use.
Regarding the 3 speakers (well, 2 speakers and a piezo thingy), are those already wired to the circuit board properly? Or are you also asking help on how to wire/add the two real speakers to the circuit board with the piezo too?
darryl was right Scott your pic is right on the money and what I was looking for.... Again as darryl was commenting I was over thinking the situation.... what that song.... "I can see clearly now"... thank your for your help
You're welcome, Robert. Always happy to help.
All done except changing the input jack.... swapped out the volume pot.... (it was a pull) and all is wonderful.... thanks again for all the help.
IMG_3706.JPG
Okay got it hooked up as per pic and it works BUT the volume does not go all the way down..... I used a pot from an old amp it is 50k (back marked ALPHA B50K) ... I figure that it is too big for my use, or faulty... or I screwed up... before I take it apart "should a 50k work (I also have a 10K)....
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