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Adding a volume control to some speakers

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markronz:

Hey everyone.  This is hopefully an easy question.  I recently got a pachislo machine.  The volume is too loud, as they tend to be, so I am installing a Potentiometer to use to control the volume going to the two speakers.  Attached is a picture of the speakers.   They have two wires going to each. One is clearly labeled as + and the other as -.   I am using this potentiometer, so that I can wire up both speakers to the one pot. 

I found this page here. Which shows how to wire up the pot:


So now I need to know how to use all this information to actually wire it together.   Is the negative (-) wire coming from the speaker the ground wire?  If so, is my attached wiring diagram correct how I have it set up?

yotsuya:


--- Quote from: markronz on September 12, 2011, 07:14:08 pm ---Hey everyone.  This is hopefully an easy question.  I recently got a pachislo machine.  The volume is too loud, as they tend to be, so I am installing a Potentiometer to use to control the volume going to the two speakers.  Attached is a picture of the speakers.   They have two wires going to each. One is clearly labeled as + and the other as -.   I am using this potentiometer, so that I can wire up both speakers to the one pot. 

I found this page here. Which shows how to wire up the pot:


So now I need to know how to use all this information to actually wire it together.   Is the negative (-) wire coming from the speaker the ground wire?  If so, is my attached wiring diagram correct how I have it set up?

--- End quote ---

I've used that same pot, but I did it inline between the sound source and the amp, not between the amp and the speaker. Your diagrams and wiring seem right on, based on what I did, but I don't know if you need any resistors inbetween.

BadMouth:

Post-amp, you need something like this.....
http://www.radioshack.com/product/index.jsp?productId=3207537
You don't need one that heavy duty.

There's a name for them, but I can't remember what it is.
I have one in one of my parts bins....somewhere.
It's been there for over 10 years.  If I can find it, it's yours.

*I know nothing compared to the electronics gurus of BYOAC.  Hopefully they'll weigh in.

BadMouth:

alright, found my old one (used to control the volume on the center channel speaker of my car stereo back in the 90's).

It's called an L-Pad.

Do a search on fleabay for L-Pad.  
It might be just as cheap to get a new one on there, but my offer stands.

Wiring is easy.  speaker wire in...and speaker wire out.

capt awesome:

I don't have my pachislo near me but i believe they usually have a volume control hidden inside somewhere.  I think it was just a button for low middle and high volume but don't quote me on that.  I know I turned mine down before I gave it to my dad.  check what everything does before you go and install sometyhing thats already there

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