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Passive iPhone Amp #2

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Project by nblazek posted 09-06-2015 03:13 PM 1090 views 3 times favorited 6 comments Add to Favorites Watch

After making the first amp, my wife felt that it could have been louder so I wen back to the drawing board. I used some scrap lumber to come up with this prototype. I used 1/4” oak that was pretty badly warped so despite glue and clamps you can see that there are some gaps in this version. I drilled different size holes into each piece of wood and then rounded them over with a router before laminating them together.

This design seem to work pretty well and would probably be effective with a few different phone models.





6 comments so far

View Dave G's profile

Dave G

303 posts in 1513 days


#1 posted 09-06-2015 04:18 PM

nice and simple. Could you tell us a couple dimensions to give us a sense of scale? Too confusing trying to use the 1/4” thickness as a measure. Thanks!

-- Dave, New England - “We are made to persist. that's how we find out who we are.” ― Tobias Wolff

View nblazek's profile

nblazek

45 posts in 841 days


#2 posted 09-06-2015 05:00 PM



nice and simple. Could you tell us a couple dimensions to give us a sense of scale? Too confusing trying to use the 1/4” thickness as a measure. Thanks!

- Dave G

Hey Dave. The dimensions are 2” high, 4” deep, and 5” wide at the largest areas. The smallest hole is 1” and they step up about 1/2” until the largest hole at 2 1/2”. The slot is 3/4” to accept a phone even with a decent size case on it.

Hope this helps!
Thanks for viewing.

-Nick

View Dave G's profile

Dave G

303 posts in 1513 days


#3 posted 09-06-2015 08:29 PM

thanks!

-- Dave, New England - “We are made to persist. that's how we find out who we are.” ― Tobias Wolff

View Claytonp's profile

Claytonp

5 posts in 458 days


#4 posted 09-06-2015 11:06 PM

Does it get pretty loud?

View Claytonp's profile

Claytonp

5 posts in 458 days


#5 posted 09-06-2015 11:06 PM

Does it get pretty loud?

View nblazek's profile

nblazek

45 posts in 841 days


#6 posted 09-06-2015 11:41 PM



Does it get pretty loud?

- Claytonp

Claytonp,

It does a pretty good job. I’m still playing with scraps and designs to figure out what will do the best job. My wife uses this when she’s in the shower and she says it works well enough to hear over the shower and bathroom fan.

Thanks for viewing!

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