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 Post subject: Treble Pick Problems
 Post Posted: Sat Mar 11, 2006 2:37 am 
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Joined: Fri Mar 10, 2006 2:00 pm
Posts: 7
Location: American Fork, Utah
I am the proud owner of a 1973 4001 base. I bought it used in 1979 and the treble pickup has always been weak. Upon inspection I found that there were only 3 - 5 windings on the core. Is this normal? I am trying to restore the electronics. What size wire is used in the windings and how many turns are there?

Peace,

The Bishdo


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 Post subject: Re: Treble Pick Problems
 Post Posted: Sat Mar 11, 2006 2:44 am 
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Joined: Fri Mar 10, 2006 2:00 pm
Posts: 7
Location: American Fork, Utah
Correction, it was built in May of 1973.


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 Post subject: Re: Treble Pick Problems
 Post Posted: Sat Mar 11, 2006 4:32 pm 
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Joined: Sun Aug 21, 2005 1:00 pm
Posts: 217
Location: Lisbon, Portugal, EUROPE
Five wire turns?? That doesn't make any sense, if you ask me. Besides, five turns of wire are as good as no wire at all on a pickup. How about a couple pics of this 'air coil' pickup? Rickenbacker use #44 AWG magnet wire on all their pickups. As to the number of turns, I'm not sure, as I prefer to rely on DC resistance. 7,000 ohms on your '73 pickup will do the job.


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 Post subject: Re: Treble Pick Problems
 Post Posted: Sat Mar 11, 2006 6:39 pm 
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Joined: Wed Sep 21, 2005 1:00 pm
Posts: 56
Location: Alexandria, VA
If I recall correctly, 7k would be about eight to ten thousand turns.



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 Post subject: Re: Treble Pick Problems
 Post Posted: Sat Mar 11, 2006 9:58 pm 
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Joined: Tue Sep 06, 2005 1:00 pm
Posts: 497
Location: South Side of the Sky
You have an old 4001 Rickenbacker, you need to bypass the capacitor to get more ouput of your treble pickup if I'm not mistaken, I'm sure somebody from Rickenbacker will correct me if I'm wrong but I think that is what your problem is.
FISH


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 Post subject: Re: Treble Pick Problems
 Post Posted: Mon Mar 13, 2006 6:40 am 
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Joined: Sun Aug 21, 2005 1:00 pm
Posts: 217
Location: Lisbon, Portugal, EUROPE
Hmm... Yes, that was my first thought, but then the 3/5 winding thing threw me off course. Now I'm curious about this 'minimal wound' pickup...


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 Post subject: Re: Treble Pick Problems
 Post Posted: Mon Mar 13, 2006 10:40 am 
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Joined: Fri Mar 10, 2006 2:00 pm
Posts: 7
Location: American Fork, Utah
Thanks for the input. I will have to take a second look at it. The feed wire maybe the only thing I am seeing. I will have to unwind it. It could be that if the windings are as thin as #44 it could have shorted together or with the core.


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 Post subject: Re: Treble Pick Problems
 Post Posted: Mon Mar 13, 2006 1:28 pm 
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Joined: Tue Nov 29, 2005 2:00 pm
Posts: 36
Location: Illinois
Quote:
Thanks for the input. I will have to take a second look at it. The feed wire maybe the only thing I am seeing. I will have to unwind it. It could be that if the windings are as thin as #44 it could have shorted together or with the core.


I really think it's the capacitor. There is a .0047 capacitor somewhere in the treble pickup circuit, there are diagrams out there I know. It cuts the output drastically and thins out the bass, so you should have a weak, trebly treble pickup, correct? This was done intentionally, and due to the year, your bass has/had this. If you bypass or remove this capacitor it will be strong and bassy like the 4003, with the same output as the neck pickup. It's a common modification, and all the info you need is here-

http://www.vintagebass.com/thedudepit/a ... -1386.html


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 Post subject: Re: Treble Pick Problems
 Post Posted: Wed Mar 15, 2006 5:22 am 
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Joined: Sun Aug 21, 2005 1:00 pm
Posts: 217
Location: Lisbon, Portugal, EUROPE
Better still, leave the capacitor in and replace the original, not-so-hot pickup with a modern one.


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 Post subject: Re: Treble Pick Problems
 Post Posted: Wed Mar 15, 2006 8:58 am 
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Joined: Thu Feb 23, 2006 2:00 pm
Posts: 132
Location: Texas, USA
Hi,
again that mysterious capacitor which isn’t shown in any wiring diagram as far as I know.
I am not familiar with Rick bass guitars but I have the same problem with all of my 6-string 480’s.
The bridge pickups of my 480’s just had no power at all, until I bypassed that *!$#% capacitor.
THEY SCREAM NOW !
Please just remove the scratch plate and bypass that capacitor with a wire, if you are happy, leave the wire in place and when you are ready to sell the guitar, take it out again to sell your guitar as an original.
If that doesn’t work I think something is wrong with the pickup.

Benjamin


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