January 13, 2007
iPod Shuffle box headphone amp
Sometime after Make magazine Volume 4 came out, I built the circuit board for a CMoy headphone amplifier. I tried to fit the amp in an altoids tin as the article suggested, but with the larger capacitors I used it was just a little too big. I put the completed board aside for a while, until a friend bought an iPod shuffle. The clear plastic box the iPod came in proved to have plenty of room for the CMoy. I just wish I’d been a little more organized with the wiring.
Image of shuffle box from: http://flickr.com/photos/thenextweb/285559966/
Cat: | Time: 3:01 pm (UTC-6) Comments (8)
January 16th, 2007 at 5:23 am
iPod Shuffle box headphone amp (made from an iPod 2G box!)…
Matt has a great iPod Shuffle box headphone amp (excellent re-use!) writes – “I made a CMoy headphone amp based on the description in Make vol. 4. It wouldn’t fit in an altoids tin, so I put it in……
January 16th, 2007 at 9:08 am
A suggestion I found when making a couple of these is: on the input (stereo) jack – try & use a ’switched’ version of the jack (the kind that would ordinarily disconnect a speaker when a headphone is plugged in).
connect these ‘unplugged-side’ pins to ground. This has the effect of grounding the inputs to the op amp until you jack-in. The jack doesn’t hum when your hand touches it or before you have plug fully inserted.
Mike Yancey
Dallas, Texas
January 16th, 2007 at 11:23 pm
Question to Mike Yancey, where can one find these sort of “switched” jacks? Do you have a part # from digi-key/mouser/rs/farnell??
Would like to see it.
January 17th, 2007 at 2:09 pm
lotso,
Switchcraft 35RAPC4BH3(mouser 502-35RAPC4BH3) is an example.
January 18th, 2007 at 3:18 am
[...] “I made a CMoy headphone amp based on the description in Make vol. 4. It wouldn’t fit in an altoids tin, so I put it in the clear box that an iPod shuffle came in. The wiring is kind of messy, but it still looks pretty neat.” [via] – Original link. [...]
January 18th, 2007 at 7:34 pm
[...] Originally Syndicated via RSS from del.icio.us/tag/diy Click to read top NEWS stories [...]
October 5th, 2007 at 11:49 am
can i use the ipod nano case for this
October 13th, 2007 at 7:23 pm
christopher: I don’t know if the nano case would work, I haven’t seen one. You’d probably have to have the case and the parts of the amp in front of you, and see if you can come up with a layout that works.