Just out of curiosity, do these have truss rods?  I don't see any access point for adjustments...

No truss rods on Hyak instruments (they used graphite to stabilize) unless Alembic has put one in as they did on Robert's bass.  
Please see thread on Robert's Hyak Restoration http://club.alembicguitars.net/Images/631/9853.html
 
BTW, I would trust NO ONE BUT ALEMBIC with a Hyak instrument.  
 
(Message edited by artswork99 on August 02, 2007)

You know that this thread has been very inspiring to me again in the way of Hyak...  
Back to where this all began  
I am sooooo ready for my first Alembic Bass.
Is there anyone here interested in a trade for the Hyak guitar shown at the beginning of the post   Thanks, Art
 
(Message edited by artswork99 on August 04, 2007)

There's a glitch with images every so often... they are looking into it...  Here is the Hyak literature again.
 

 
(Message edited by artswork99 on August 06, 2007)

Please let me know if anyone has an Alembic bass they would like to trade for the Hyak guitar.  
Thanks, Art

would an orion 5 interest you?

I have emailed you Jeff,  thanks!
 
(Message edited by artswork99 on August 14, 2007)

I promise to give an Alembic a good home and play it daily  
 
And you may have this nice vintage Hyak guitar in return!
 
(Message edited by artswork99 on August 16, 2007)

Jeff (flaxattack), I sent you a couple of emails.  Thanks.

gonna pass

Thanks for the response Jeff.