Thanks Mica to spend time to these answers.
For me, gotoh machine heads had only one look, the same I have on my SC deluxe:
http://www.g-gotoh.com/international/?btp_product=gb350
If I had known this, but I chose Gotoh the other model, now we can not change, so be it.
I never spoke about strap holders but I appreciate the explanation.
I really want to know you more and assisting the development of this bass.
I hope the troubleshooting will be behind soon.
Have a nice week-end.
 
Google blabla...

Yeah, I didn't like those Gotohs design much. When we got our regular order, the style was changed without notice. Then they started to make them with the cylindrical shaft, we asked them to make them for us in the older style, both is the shaft shape and the decorative shape, like Didier's bass. I like these best and I was so happy they made them for us.
 
When you talked about the buttons, I thought you meant the strap holders, such is the way with translating!  
 
I'll be away the rest of the day (2 birthday parties!), but I'll look for your email on the first question of the troubleshooting tomorrow with my coffee.

Ok here are some news: Mica will send me after the 4th of july new electronic set because it's not possible to fix the problem with an easy way like mail, sound example and pictures I sent.
 
Anyway, more I play this bass, more I find it fantastic and I find some sounds that go beyond imagination!

The electronics is now here, I will change it tomorrow with a friend and I will get some news after.

I just spent 2 hours to change the electronics, I made two solder points and there is no change! What do you suggest now?
I think this is a problem of resistance connected in series or Parallel posing this problem.
 
We cannot compare the two basses because the blackwood is a serie I with a master volume and koa bass is a series II

We've already exchanged emails on this, but to update everyone else, dad is thinking about the problem. It might take more than a few days, but it's something we have been discussing together (mostly him talking to me - I'm no engineer), and I'm sure he'll figure out this mystery.

I changed the card preamp some weeks ago (from the Koa bass) to follow Mica's recommandation, = no change.
I'm waiting now for new linear pots, will change and try again... Hope it will work fine after.

I just changed log vol pot for linear vol pot sent by Mica = NO CHANGE.

At the end of september, the problem reported in June is still present despite the hard work of Dad...

At the beginning of october, the problem reported in June is still present despite the hard work of Dad...
I play with an instrument that has only 60% of its potential .... I love it.

that was a necessary post.

I will gladly trade you an '81 G&L L-1000, even-up, for your defective Alembic.
 
John

Or I'll give up a '97 Yamaha RBX360 for it.
 
Peter

we can finally close this issue because by changing the pickups just now (Mica sent me last week a new pair), the bass now works perfectly, it's a jewel. Too bad it took all this time ... It was only a phase problem, the neck pickup was reverse phase

Great news Pierreyves I hope you can now enjoy your lovely bass more.
 
Jazzyvee