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Thread: DIY Speaker |
    
Gold Member Username: Arande2
Rattle your ...
Missouri
Post Number: 2785
Registered: Dec-06
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| Posted on Sunday, January 13, 2008 - 02:27 am: |
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I was extremely bored and decided to make a speaker driver, even if it was of bad quality. It is true this is not my only post of this..but I thought it would be better here in this section.
It was quite fun to make, actually.
Materials
I took some magnet wire, tape, a bowl, a magnet salvaged from a cheap speaker, and some cellophane and put it together into a speaker driver.
Making It
First, I coiled the wire around an aerosol can and taped it up tightly. Then I measured the DC resistance at 1.3-ohm (1.6-ohm nominal).
Next, I placed the magnet in the center of the bowl. It is not optimally placed and so I lost some efficiency.
I then stretched cellophane over the bowl. I knew how tight it was changed parameters like Fs, Cms, and others (suspension related). Finally, it was wrapped so that it was just tight enough to be minimal of wrinkles and to hold the voice coil without sagging. There's some excess on the sides.
Next, the coil was placed in the center of the cellophane and I connected wires to it for hooking to an amplifier.
Here's the end result.
Yes, it's definitely not very good, but it was fun. The magnet needs to be a bit closer to the coil.
I can get it to move a bit with about 5 amps of input, but I need more amplifier power to make it actually make some noise.
I have a question. How much power does it look like that coil can take? |
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Platinum Member Username: Jan_b_vigne
Dallas,
TX
Post Number: 12037
Registered: May-04
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| Posted on Sunday, January 13, 2008 - 08:48 am: |
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Before what happens? |
Gold Member Username: Arande2
Rattle your ...
Missouri
Post Number: 2790
Registered: Dec-06
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| Posted on Sunday, January 13, 2008 - 08:50 am: |
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What do you think Jan.. Seriously 
MELTDOWN! |
Platinum Member Username: Jan_b_vigne
Dallas,
TX
Post Number: 12039
Registered: May-04
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| Posted on Sunday, January 13, 2008 - 08:57 am: |
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If the circuit breaker doesn't flip first. I'd get the family and pets out of the house before I tried to get that thing to make sound.
The coil goes inside the gap, Andre. |
Gold Member Username: Arande2
Rattle your ...
Missouri
Post Number: 2792
Registered: Dec-06
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| Posted on Sunday, January 13, 2008 - 09:00 am: |
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I know this, but I do not have access to what I need!!!
It actually sounds OK (a bit bass-heavy though) running off of the fringe field of the magnet, but it's very inefficient as you may expect... |
Gold Member Username: Exerciseguy
Brooklyn,
NY
United States
Post Number: 1717
Registered: Oct-04
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| Posted on Sunday, January 13, 2008 - 09:08 am: |
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http://www.youtube.com/watch?v=8m8fbnShPcw |
Gold Member Username: Arande2
Rattle your ...
Missouri
Post Number: 2793
Registered: Dec-06
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| Posted on Sunday, January 13, 2008 - 09:12 am: |
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Ok it is true that's kinda why I did this lol
I saw it and decided to make one that actually worked. It was fun... |
Platinum Member Username: Jan_b_vigne
Dallas,
TX
Post Number: 12042
Registered: May-04
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| Posted on Sunday, January 13, 2008 - 10:46 am: |
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The guy on youtube should have spent some time building a camcorder stand. |
Gold Member Username: Nuck
Post Number: 9580
Registered: Dec-04
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| Posted on Sunday, January 13, 2008 - 11:34 am: |
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the loudest complaints come from the cheap seats! |
