Yes, I cut the output from the amp. Then you have to bridge the two resistors since the audio from the output is no longer amplified.
It should look like this:
https://www.dropbox.com/s/xw0ll7bttwvcqoy/WithSwitch.jpg?dl=0
Or, if you want to disable the speech chip permantently without a switch:
https://www.dropbox.com/s/6632skxtmgvx6v5/WithoutSwitch.jpg?dl=0
(By the way, how do I post picturtes here? Haven't figured out so far.)
Andy