[sdiy] help with strange BBD chips (sony) (Kenwood time delay)

[Dan Snazelle]

In the last few months I found a Kenwood EQ/time delay component (ge-1000)that is labeled as a  "time delay for spatial and delay effects"

i opened it up and the only chips that could be BBD's are the SONY 766 chips (sony 766 103 1g)

there are 2 (left and right) and the only other chips are opamps or regulators,etc.

anyway, i can't find any information on them. i bet they'd be great for a flanger or chorus.

also in the last few months I salvaged an early 1980's VCR and while opening it up i found 2 big plastic boxes labelled

"kss DELAY LINE ms-21" and KSS delay line MS-15"


can i use these for delay or phase shift effect?

i am constantly surprised at how many chips DONT turn up in my datasheet searches.
is this because they were just made for a specific product and  they were never available to the public?

anyway, any help would be greatly appreciated.

thanks