Criticize this circuit please.

[ThreeChordWonder]

A couple of typos. For "coils in parallel" read "coils in series" and I've mis-labeled the bridge pickup output wire.

Other than that, please point out any errors in the circuit...

 

[Artie]

Looks ok to me.

 

[ThreeChordWonder]

Well, it seems to work...

Meet the host.

Epiphone 58 Flying V in Korina. Bought brand new for 600 bucks.

All the "gold" metal bits (with the exception of the bridge bushings and the string ferrules) have been replaced with chrome, basically because I don't like "gold".

SD Saturday Night Specials, Kluson tuners, Gotoh bridge.

Electronics as per the circuit above. 500k CTS push pull pots and a 0.022 uF cap.

 

[Artie]

Sweet! Looks great.

 

[beaubrummels]

Nice. I would love a Korina V. I'm also good with gold, but that's my taste.

 

[Teleplayer]

On your schematic, it looks like you have selected the incorrect lugs on the tone control pot.

The direction you labelled "pull" on the switches seems odd to me, although I may have misread your drawing. The "pull" side of the switches is normally in the direction towards the surface of the pots.

 

[ThreeChordWonder]

On your schematic, it looks like you have selected the incorrect lugs on the tone control pot.

The direction you labelled "pull" on the switches seems odd to me, although I may have misread your drawing. The "pull" side of the switches is normally in the direction towards the surface of the pots.

Thanks for the pointer on the tone, and yes, I had to switch the connection over.

I'll get around to switching my terminal labels over one day too

 

[ThreeChordWonder]

Nice. I would love a Korina V. I'm also good with gold, but that's my taste.

I hear ya, but the "gold" on these parts looked real cheesy.

Each to his own though:beerchug:

 

[GuitarDoc]

The direction you labelled "pull" on the switches seems odd to me, although I may have misread your drawing. The "pull" side of the switches is normally in the direction towards the surface of the pots.

No, they look ok.
"Pull" is up/away from the pot. "Push" is down/in toward the pot.

 

[GuitarDoc]

I hear ya, but the "gold" on these parts looked real cheesy.

Each to his own though:beerchug:

Yeah, some "gold" plating really looks horrible...not like gold at all. But good quality gold plating looks great on some guitars.

 

[ThreeChordWonder]

^ I label the pull and the push directions, also the corresponding contact numbers on CTS plastic-cased style pots. It should be relatively foolproof, but remember what Douglas Adams wrote about the ingenuity of complete fools.

In actual fact, since the switch part is on the underside of the pot part, and is activated by the central shaft, push moves the moving contacts inside the switch away from the pot part, pull moves them towards it. Which is why they're normally drawn with the push contacts furthest from the pot.

 

[Teleplayer]

No, they look ok.
"Pull" is up/away from the pot. "Push" is down/in toward the pot.

Sometimes the sense of "up" and "down" will be different, because the guitar is normally face down when it is placed on the work bench.

 

[ThreeChordWonder]

Oh dear.

By definition, almost, you can only pull something if you grab hold of it. Like pulling on a doorknob.

OTOH you can push a door closed with you foot or your shoulder or...

QED, pulling on a push pull pot means extending the shaft. Pushing on a push pull means the shaft goes inwards.

 

[ThreeChordWonder]

Correction - Gotoh tuners.