I read an article in Model Railroad Hobbyist about installing iPhone 4 speakers in HO locomotives. This “sounded“ good to me as most of the time HO sound locomotives aren’t loud enough for me. Maybe I’ve been running Fn3 too long. The article went on to say it was probably iPhone 5 speakers.
http://model-railroad-hobbyist.com/node/28430
http://model-railroad-hobbyist.com/node/28430
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