crwdns2934241:0crwdne2934241:0 Dan

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Apple holds their cards quite tight! Sadly, your questions are not something we can answer here we are not Apple.

You will need to fight through the labyrinth of first ID’ing the part and the maker then try to get a few samples from the supplier and taking them apart to discover there construction as well as poking them with tools to measure its audio response.

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open