Well, my research about my Elan 5 is not in the end  
You see the pots? They're Alembic. But the knobs don't seems to be original. BUT, I saw in the parts page: the collet and hat knobs, don't fit in the pots of this bass. The collect knobs are the same in the F-1X preamp (I have one).
So, someone know whant kind of pots are these? And where can I get the origal knobs for them?
Thank you. Regards

I think you should wait until Mica makes a comment here.  The control cavity is far to neat for someone to have changed those pots.  The collet knobs come in 2 sizes.  Check the Store at Alembic.com.   Good luck,  Beautiful Bass by the way.
Ken
 
[moderator edit: spelling]
 
(Message edited by davehouck on May 10, 2009)

According to the parts page, the two different shaft sizes are 1/4 and 1/8.
 
I'm guessing you've already figured out how to remove collet knobs, but just in case it might be helpful, there are instructions here.

Thanks, Dave.
  I guess I was still half asleep

Hee hee!  I don't normally correct spelling errors except when the error changes the meaning of the text, but that one was needed.

Hum... I think maybe the "hat knobs" 1/4" fit in those pots. But I'm a bit confuse because I saw different Elan basses with both hat and collet. I'll wait for Mica's coments. Thank you. Cheers

 

Fernando,  
I believe that you may be able to use either knob as long as the shaft diameter is known.  A collet knob has a more secure locking system where it uses a sleeve and the hat knobs use set screws.
 
If I'm wrong I'm sure I'll be corrected  
Art

I love that last pic! :-)
 
Go with the knobs you like best, 1/4 will fit ;-)

Hi
I've found the F-1X preamp volume knob fit well in my Elan. It's 1/4 colect knob. I've done an order from Alembic, and I'm waiting for the answer. Why take so long to say something?  
I thank you all your coments. You're great!
Thank you

Hello
In my research I've found the kobs in my Elan are the same in Smith basses. Just for curiosity.
thank you !