How to turn a DVC to an SVC? - diyAudio
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Old 15th August 2011, 07:46 PM   #1
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Default How to turn a DVC to an SVC?

I have a small subwoofer I'm trying to recone, I went out and bought all the parts I needed, but all the single voice coils available were too small, so I got a double voice coil, how could I wire this coil to make it work as a single voice coil?
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Old 15th August 2011, 08:16 PM   #2
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You have a choice of paralleling the voice coils or series wiring the voice coils. SO 8ohm coils become either 4ohm or 16ohm SVC, or 2 4 ohm coils turn into 2ohm or 8 ohm SVC.


Subwoofer Wiring Diagrams
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Old 15th August 2011, 08:19 PM   #3
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Thank you, now how do I do this, do I connect the two wires on the same side of the coil together, to make the 4ohm coils into 2ohm?
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Old 15th August 2011, 11:01 PM   #4
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How do I go about testing the resistance of the coil? I hook it up to my multimeter set to ohms but nothing happens.
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Old 23rd August 2011, 02:53 AM   #5
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Default dvc coil measurements

Quote:
Originally Posted by Godfrd824 View Post
How do I go about testing the resistance of the coil? I hook it up to my multimeter set to ohms but nothing happens.
Hi there: A dvc will have two sets of connectors, one located on each side of the basket. Each of the two coils will be factory hooked-up to one of the of the connector sets. There is no faqctory connection between the two sides.
First test your meter for operation by shorting the leads together, you should see 0 ohms, if the meter is working (older VOM meters need to be zero adjusted). Now connect the a meter lead to the connectors of one set (one side of the basket) If the coil is intact, read the ohms. (not good if there is 0 ohms) Do the same for the other side. (hopefully you will get a reading on one side, if so you can use the speaker as is with the one coil, at the measured Re). ...regards, Michael
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Old 23rd August 2011, 01:34 PM   #6
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Thanks for that, I have one more question, for about 120-150 watts RMS should I use 1 spider or two?

They're this kind of spiders.

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Old 23rd August 2011, 03:27 PM   #7
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Usually it's best to go back to original specs.
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Old 23rd August 2011, 03:40 PM   #8
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Yes, that would be optimal, but I threw out the old parts, and this is a no name cheap sub.
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Old 23rd August 2011, 09:29 PM   #9
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Out of curiosity, do you have a rig that can measure T-S parameters? You will probably end up with a woofer that behaves differently, and you will need to account for the changes in order to use the woofer effectively.
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Old 23rd August 2011, 09:30 PM   #10
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I don't even know what T-S is, so I guess I don't have the equipment to test it, and it doesn't matter if it ends up different, as long as it sounds decent.
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