So if you don't know what this, I will try to explain. The Big Mack is augmentative alternative communication device used by individuals who need it to communicate and interact with their environment. The big red button can be pushed or one can extend the "switch" to a separate switch if pushing the red button is more difficult.. This one is the older models. They will record messages and are then played back, some have levels, with multiple recording or "Banks" think digital voice recorder. Anyway these older ones are usually found in boxes or bins in obscure closets at schools and or institutions, with writing on the boxes saying Broken! anyway this one had a bad speaker and a broken or just cheapo mic. This instructable will walk you through those steps to replace both and do it with junk lying around specifically old broken laptops= really good Mic and a small speaker harvested from a broken musical toy or like, in this case speaker was out of a broken Leap Frog toy. This model currently sells for about $260 and originally cost more then that!
Step 1
Material List:
Drill
clear tape
wire strippers
solder
solder Iron
wire connectors or similar wire shrinky covers
scrap speakers harvested from something good that broke
a Mic I used one from a internal Mic from laptop
screwdriver
some misc. Foam from scraps of electronic shipment packaging
Alternate materials is buying a Mic and buying a speaker at your typical retail chains: Radio shack, or online at mouser, adafruit or the maker shed, they are cheap and are definitely better then what is currently in the device, just on age alone.