[sdiy] Another 2164 project

[Neil Johnson]

Hi David,

> Very nice!  Anything with 2164 warms the cockles of my heart (and all my
> other cockles too!).

You keep your cockles to yourself, thank you very much!

> Two (impertinent) design questions, if I may:
>
> 1.  Are the multiple input resistors just a matter of saving PCB real
> estate, or for some other reason?

Yes, its quite a dense board.

> 2.  Why do you buffer outputs which are already buffered?  Is it something
> to do with driving capacitance?

The outputs of the I-V converters are not buffered, in that they feed 
the internal connections that then go to the master mix section.  If I 
didn't have the output buffers then any connect/disconnect on the sub 
outputs would be heard on the main output.  They just keep the outside 
world outside.

Cheers,
Neil
-- 
http://www.njohnson.co.uk