[winston61]

Hello all- I've got my cmoy built and tested. Ready to case. I know this an old newbie problem, but I'm looking at the pot and wondering how to wire it. I'm a bit familiar with it, I know that one or more pins on either end are for each channel. I've searched for threads and photos and if someone knows a thread or photo I can look at it would sure be appreciated. The amp worked the first time I powered it up. A little bit of noise in the right channel, but I think that will clear up when I get everything hardwired. I'm using the panasonic pot in Tangent's list. Thanks to all.

 

[fiddler]

http://headwize2.powerpill.org/proje...=cmoy2_prj.htm

Scroll down 1/4 of the way.

 

[jtfoo]

Quote:

 

[fiddler]

Quote:

Originally posted by jtfoo Quote:

jtfoo, this looks more like the pinout of an Alps Blue or similar, not a Panasonic...

 

[Sol_Zhen]

I made this sketch a while ago. If you're using the Panasonic Pot and default jacks from Tangent's instructions it should help.

 

[fiddler]

Solzhen, if those are the minijacks you get from Digikey recommended on Tangent's site, you have R and L mixed up. Is it logical, well no, but what can ya do?

 

[Sol_Zhen]

left = tip, right = sleeve. no?

 

[fiddler]

Correct, but try connecting a mini-mini cable to a jack, and check continuity with a meter. You'll see that tip corresponds to the middle lug, and the top lug corresponds to sleeve. Strange but true.

 

[Sol_Zhen]

I just checked via test tones that call out "left" and "right". My Cmoy is correct.

 

[fiddler]

That's probably because you have BOTH input and output wired wrong, so they cancel each other out.

 

[Sol_Zhen]

If they're both wired the same, how would that make a difference? I’ve used the same on my Meta and that checks out correct as well.

Are you sure about your claim?

 

[fiddler]

Yes, positive. Read the datasheet, damnit.

Again, try testing with a multimeter. You'll see that I'm right.

Think about it: When you wire the output reversed, you've just reversed the channels... but when you wire the input reversed as well, you've just re-reversed it. Hence it's back to normal.

 

[Sol_Zhen]

Quote:

Originally posted by fiddler Yes, positive. Read the datasheet, damnit. Again, try testing with a multimeter. You'll see that I'm right. Think about it: When you wire the output reversed, you've just reversed the channels... but when you wire the input reversed as well, you've just re-reversed it. Hence it's back to normal.

I tested with a multimeter before assembly and before drawing that diagram.

 

[fiddler]

Heh, I hope we're talking about the same jack!!!

CP-3535ND from Digikey?

 

[fiddler]

Datashets don't lie