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Treble Pick Problems
http://www.rickenbacker.com/forum/viewtopic.php?f=6&t=1638
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Author:  Bishdo [ Sat Mar 11, 2006 2:37 am ]
Post subject:  Treble Pick Problems

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

Author:  Bishdo [ Sat Mar 11, 2006 2:44 am ]
Post subject:  Re: Treble Pick Problems

Correction, it was built in May of 1973.

Author:  crazyrick [ Sat Mar 11, 2006 4:32 pm ]
Post subject:  Re: Treble Pick Problems

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.

Author:  dignan [ Sat Mar 11, 2006 6:39 pm ]
Post subject:  Re: Treble Pick Problems

If I recall correctly, 7k would be about eight to ten thousand turns.


Author:  fishoutofwater [ Sat Mar 11, 2006 9:58 pm ]
Post subject:  Re: Treble Pick Problems

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

Author:  crazyrick [ Mon Mar 13, 2006 6:40 am ]
Post subject:  Re: Treble Pick Problems

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...

Author:  Bishdo [ Mon Mar 13, 2006 10:40 am ]
Post subject:  Re: Treble Pick Problems

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.

Author:  Savagery [ Mon Mar 13, 2006 1:28 pm ]
Post subject:  Re: Treble Pick Problems

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

Author:  crazyrick [ Wed Mar 15, 2006 5:22 am ]
Post subject:  Re: Treble Pick Problems

Better still, leave the capacitor in and replace the original, not-so-hot pickup with a modern one.

Author:  BenjaminFrey [ Wed Mar 15, 2006 8:58 am ]
Post subject:  Re: Treble Pick Problems

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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