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Wiring help

post #1 of 25
Thread Starter 
I hope i can post this in this section...rolleyes.gif
Anyways, im building some paper plate speakers for the lulz and i want to check on some things with you guys.

]Is more windings of smaller diameter wire more preferable than thicker wire? I figured more smaller gauge wire would give greater impendance.

And now the issue of wiring.
Well i have like 3 magnets and a 3.5mm jack cable just lying around so ill use those, but i need help with wiring.


I bet the anwser to this one is stupidly simple or just "you cant do this", i hope you wont cringe at my lack of knowledge on this matter.
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post #2 of 25
You want a diameter appropriate to the current. But for speakers thin is fine. But note that thicker the conductor the more it can carry.

Couple them parallel. So that you have three wires on each of the wires on the cable.
post #3 of 25
Thread Starter 
Quote:
Originally Posted by iPatch View Post

So that you have three wires on each of the wires on the cable.
The total sum of the ends on the coils is like 6, 2 for each. how can i connect it so that each each cable wire has three wires? thinking.gif wouldnt i need 9 coil wires then

Can you connect it with lines in Paint or something please redface.gif
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post #4 of 25
Why 3 magnets? You have 3 speakers?
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post #5 of 25
Thread Starter 
Quote:
Originally Posted by kevmatic View Post

Why 3 magnets? You have 3 speakers?

They will all be mounted to drive a single cone biggrin.gif
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post #6 of 25
Okay so. + and - on the jack needs to go to three different places. So 2x 3-way splitters should do it. Ground goes to the cabinet or something.
post #7 of 25
Quote:
Originally Posted by Vedyl View Post

They will all be mounted to drive a single cone biggrin.gif

Oh.

I take it you likely do not have a multimeter? If you do, measure the resistance of your coils and tell us.

The impedance on your coils is likely to be rather low, so I think I'd wire them in series instead of parallel.
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post #8 of 25
Quote:
Originally Posted by kevmatic View Post

I take it you likely do not have a multimeter? If you do, measure the resistance of your coils and tell us.

The impedance on your coils is likely to be rather low, so I think I'd wire them in series instead of parallel.
I would advise the same. Although the lower impedance may not harm the amp (or you might not care about the amp) most consumer amps are rated to push 4-8 ohm drivers. The lower the resistance the greater the heat in the amp. Heat is your enemy if you want longevity.

As for the wiring just use both left and right as the "positive" and the common ground. This shouldn't hurt the amp.

Also, before you finish putting all three voice coils on the same cone permanently make sure they are in the same phase. That is, the electro magnets are all going up together or down together when current is applied to them. You'll be kicking yourself if they are opposite phases and effectively cancelling each other out.

EDIT:
Wiring like this (assuming 2 ohms per coil) yields 6 ohms which almost any consumer amp can handle with ease. And more windings would be beneficial as it will generate more force (louder). You should attempt to count the number of turns for each coil and have them match each other or be pretty close. Don't forget to use coated magnet wire for the windings.

Edited by Go Gators! - 8/13/13 at 12:01pm
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post #9 of 25
Thread Starter 
Quote:
Originally Posted by Go Gators! View Post

As for the wiring just use both left and right as the "positive" and the common ground. This shouldn't hurt the amp.




liiiike this? :3
EDIT: Probably should have wired the right together with left
Quote:
Originally Posted by kevmatic View Post

Oh.

I take it you likely do not have a multimeter? If you do, measure the resistance of your coils and tell us.

The impedance on your coils is likely to be rather low, so I think I'd wire them in series instead of parallel.

I do and i will and i will. ^^

You guys have been so much help, thanks so much. Ill be updating this thread tommorow when i make the bugger.
Ill be running it trough this if that matters. Will i mess anything up in here with 4-6ohms impendance? http://www.m-audio.com/products/en_us/Delta66.html
Edited by Vedyl - 8/13/13 at 5:27pm
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post #10 of 25
The wiring looks exactly right. Like you said, you can mix/bridge the R and L channels. Don't forget to check which way each coil is oriented before making anything permanent (i.e. the poles of their magnets and flow of current is the same)

From glancing at that M-Audio device, it looks like a mixer more than it does an amplifier. An analog mixer should be unaffected by the resistance. I wouldn't worry about the resistance unless the sum total of all 3 coils is less than 4 ohms. Even below that should be fine, but no point to risk damaging an amp on a project that is just for shiggles.

For reference, I run my home theater subs @ 2 ohms, but I have amps that are designed to operate properly with 2 ohm loads. In general the lower resistance just creates more heat in the amp so it requires added cooling. You probably wont blow something up playing at low volumes.
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