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Gibson G3 - Introducing myself

Gibson G3 - Introducing myself
« on: November 06, 2011, 09:07:16 PM »
Hi there. Im from Brazil and I have a Gibson G3, all original w/ case. I got it from an old store in Maryland (bought over internet around 1996 - really difficult to ship it to Brazil).

Neck is nice, you call it "maple flame", isnt? And the color is candy apple, or cherry red. This model has no bridge cover, and there´s no screw holes near the bridge. So I think Gibson dindt put it. I dont know if neck is 100% fine, if you can see, there´s some "strange" part near headstock (see pic). Serial: 83142015

Well, after the long journey I left it at a luthier for some adjustments, but it seems he or the previous user, did some wrong adjustments in the circuit. I´ve been playing since this time with no worries (but sometimes asking myself for its sound. neck position was fine, the other ones sounded strange). A week ago I saw some videos at youtube from people using this bass. Then I stopped a while and figured out: "man, there´s something strange with this bass". So I´ve opened it, saw some pics at flyguitar, got the schematics and discovered that wiring was - for some reason - wrong!

First of all, it seems that the three pups are different. I´ve noticed that wire colors are different (but they follow a standard, like orange being the ground plate), and looking at the pics in flyguitars, someone changed the middle pup to bridge position. Then, the three white wires have to be connected to each pup and nothing more that. But in my bass, some id*** connected them to ground wires! And if you take a look at flyguitars, the three white are not grounded! They´re only connected to each other.

So I´ve cleaned this mess and tested it. Man, I have a new bass after 15 years! Pots are fine, pups too.

The only thing I was in doubt was about middle pickup. It has two orange wires, one for the ground (like the others pups), and the other being the "hot" wire, but looking into the diagram, this hot wire is also connected to the ground plate in switch, like other pups. Is that OK? I think it´s ok due to it´s humbucking function, because the middle pup has to do that in this bass. It´s always connected, but "inverted".

Another great thing you can do with this bass is: connect the middle pup hot wire diectly in the hot wire that is soldered in switch (which goes on volume pot). So you have 3 single coils, middle turned on all the time, and no humbucking function.

Sorry for the big post, but my bass has a history! If someone can discuss about its wiring, go on!

Regards

Helio.
« Last Edit: November 06, 2011, 09:10:42 PM by heliogalvao »

jules

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Late G3
« Reply #1 on: November 07, 2011, 11:28:47 AM »
These late G3s are really nice - the neck on yours especially is just amazing. Really nice patterns in the maple.
 
As for the wiring of these - I can't help too much with modifications.
 
But one thing I can say, you should play with the releative pickup heights - the tones available can change quite significantly if you raise or lower pickups with respect to each other, especially the middle.
 
Quote
Another great thing you can do with this bass is: connect the middle pup hot wire diectly in the hot wire that is soldered in switch (which goes on volume pot). So you have 3 single coils, middle turned on all the time, and no humbucking function.
This is interesting - how does it sound like this?

Gibson G3 - Introducing myself
« Reply #2 on: November 08, 2011, 12:15:02 AM »
About pickup heights, what do you suggest? Did you see the headstock? It has a crack on it. When I use heavier strings like .45 this crack opens a little bit. So I´ll put back the .40 strings and put some glue inside it with a needle. Im worried about this cracking, maybe it can enlarge or something.

Answering your question, putting the middle pickup wired in single coil way, you can get a brighter and a little bit louder sound when the three pups are turned on. But I prefer using it as a humbucker. "Fat" sound, low noise.
« Last Edit: November 08, 2011, 12:17:03 AM by heliogalvao »

jules

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Cracked Gibson G3 neck
« Reply #3 on: November 08, 2011, 04:09:29 PM »
If that crack opens up with heavier strings, you need to get it glued, as soon as possible. Usually a repair would be as you describe - glue injected into the crack, followed by clamping. Sometimes if it is difficult to get in, a luthier might snap the headstock off entirely and then reglue - to get a bigger surface area for the glue to take hold.
 
This is one of the easier repair jobs for a luthier, but still something I have not done myself. I believe that if you have the correct glue you can do a good job yourself. If you use the wrong glue it can cause problems if you need to redo it further down the line.
 
Most luthiers charge relatively little for regluing a neck, so I usually get such things done professionally. I think I pay around £30 or so.
 
With regard pickup heights, you should just start with them all at a roughly equal distance from the strings, and then experiment - try raising them one by one, and see what differences it makes, and whether you like the sound. It will naturally depend on what you want from the bass. Raising the bridge will have a different effect than raising the neck.

Gibson G3 - Introducing myself
« Reply #4 on: November 08, 2011, 04:33:59 PM »
Hi Jules. Thanks for replying me. It´s a nice bass, nice sound and really low noise (maybe to its humbucking function and grounding).

I´ll first try to fix it by myself, using a small syringe with special glue for wood parts. I'll raise the headstock a little bit by tightening the strings, then insert the glue and finally releasing them, a little bit. If the crack opens again, 1-800-luthier!

Regards!

 

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