Yamaha YC-10

YC-10

The "entry level" YC model. 32 Treble keys, 17 Bass keys which can be switched to extend the Treble section.

Controls:

• Knobs: Pitch, Volume
• Levers: 
      Vibrato: Vibrato
      Bass: 16', Manual Bass
      Section I: 16', 8', 4'
      Balance
      Section II: Bright, 16', 8', 4'

Contrary to my earlier assumption, and according to the YC-10 owners manual, the Manual Bass lever switches the bass section in and out (either Bass sound or an extension of the treble section).  I had previously thought it was a "Balance" lever, but either I was mistaken, or there was more than one version of the YC-10.  The "I" and "II" sections are different, probably the same sounds as the YC-20.  The manual describes the "I" section as "the basic sound of the Combo Organ", which, if it's wired like the YC-20, is true, in that it controls the full, unfiltered output from the oscillators and dividers.  The "II" section is heavily filtered to produce the flute tones and bright tones.

The top on the YC-10 was a leatherette finish, not the high-gloss polyester found on the YC-20 and 25D.  

Date introduced: 1969. In 1977, the YC-10 list price was $595.