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11-14-2023, 06:33 PM
(This post was last modified: 11-15-2023, 12:48 PM by iclark.)
Back when LOML and I were still using flip phones, I used to see lots of posts about wooden passive acoustic amplifiers that would cradle and amplify smart phones. Now, they seem hard to find and I am wondering about making some as presents.
Does anyone have a pointer to a plan that they made and that worked well for them?
thanks
"the most important safety feature on any tool is the one between your ears." - Ken Vick
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(11-14-2023, 06:33 PM)iclark Wrote: Back when LOML and I were still using flip phones, I used to see lots of posts about wooden passive acoustic amplifiers that would cradle and amplify smart phones. Now, they seem hard to find and I am wondering about making some as presents.
Does anyone have a pointer to a plan that they made and that worked well for them?
thanks
I could be wrong, but I think there was one in Woodsmith a few years back. Several plans on Etsy for a few $'s. Search "passive acoustic amplifier cnc file".
John
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(11-14-2023, 07:47 PM)jteneyck Wrote: I could be wrong, but I think there was one in Woodsmith a few years back. Several plans on Etsy for a few $'s. Search "passive acoustic amplifier cnc file".
John
Thanks for the pointers. I will check them out.
"the most important safety feature on any tool is the one between your ears." - Ken Vick
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My sister in law used to use a coffee mug and an amplifier and it worked really well. Could you turn a cup on the lathe?
Wood probably makes a difference. I might start with spruce or maple since that is what guitar tops and many violins, etc.
I might also guess that a narrow bottom and wider top will push the sound "out of the top" better. That could probably be a tapered cylinder or a straight wall outside tapered inside. Straight outside with a thicker wall at the bottom would probably cause less sound to travel through the wood and more out of the top???
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As to their absence in the market... probably due to small, cheap and reasonable quality (as good as a phone speaker) Bluetooth devices.
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Ivan,
Woodsmith did offer a free plan. However, since their free plans only reach back three TV seasons, it's now in the "pay" category.
I didn't download that one when it was available.
Here's the link to the plans:
Smartphone Amp
Ray
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(11-16-2023, 02:53 PM)R Clark Wrote: Ivan,
Woodsmith did offer a free plan.
Here's the link to the plans: Smartphone Amp
Hah, I think I downloaded that plan along with a bunch of others when I was thinking about making them for gifts, yeah that never happened
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Just looked in my computer here at work and they are not on it, must be on the iPad at home. I will try and remember to look when I get home.
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Once I did the suggested google search, I found myself going down the rabbit hole on youtube.
I found lots of different approaches to making one with different designs for phones with one speaker or 2.
Several places offered to sell the Woodsmith plans or, for a price, let me watch the season 13 episode where they made one.
After several attempts at searching, I did finally find the idex for Woodsmith magazine. The plan was in Woodsmith issue 232 August 2017. I used to have my lists of magazines on my shelf on a computer, but that computer died. I have not found the right back up drive yet to find the list. I guess I will actually have to figure out my magazine filing system.
thanks to all.
"the most important safety feature on any tool is the one between your ears." - Ken Vick
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Woodcraft plans:
https://www.woodcraft.com/blog_entries/p...-amplifier
Note that phones have continued to shift size, so you'll need to make some adjustments.