How to turn a DVC to an SVC?

Godfrd824 · 15th August 2011, 07:46 PM

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?

nightanole · 15th August 2011, 08:16 PM

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

Godfrd824 · 15th August 2011, 08:19 PM

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?

Godfrd824 · 15th August 2011, 11:01 PM

How do I go about testing the resistance of the coil? I hook it up to my multimeter set to ohms but nothing happens.

j.michael droke · 23rd August 2011, 02:53 AM

Quote:

Originally Posted by Godfrd824

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

Godfrd824 · 23rd August 2011, 01:34 PM

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.

454Casull · 23rd August 2011, 03:27 PM

Usually it's best to go back to original specs.

Godfrd824 · 23rd August 2011, 03:40 PM

Yes, that would be optimal, but I threw out the old parts, and this is a no name cheap sub.

454Casull · 23rd August 2011, 09:29 PM

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.

Godfrd824 · 23rd August 2011, 09:30 PM

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.

15th August 2011, 07:46 PM	#1
Godfrd824 diyAudio Member Join Date: Aug 2011	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?

23rd August 2011, 03:27 PM	#7
454Casull diyAudio Member Join Date: Jan 2004 Location: Toronto, ON, Canada	Usually it's best to go back to original specs. __________________ Building a 2.1 system out of a 3/4"x4'x8' sheet

23rd August 2011, 09:29 PM	#9
454Casull diyAudio Member Join Date: Jan 2004 Location: Toronto, ON, Canada	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. __________________ Building a 2.1 system out of a 3/4"x4'x8' sheet

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15th August 2011, 08:16 PM	#2
nightanole diyAudio Member Join Date: Feb 2009	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

15th August 2011, 08:19 PM	#3
Godfrd824 diyAudio Member Join Date: Aug 2011	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?

15th August 2011, 11:01 PM	#4
Godfrd824 diyAudio Member Join Date: Aug 2011	How do I go about testing the resistance of the coil? I hook it up to my multimeter set to ohms but nothing happens.

23rd August 2011, 01:34 PM	#6
Godfrd824 diyAudio Member Join Date: Aug 2011	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.

23rd August 2011, 03:40 PM	#8
Godfrd824 diyAudio Member Join Date: Aug 2011	Yes, that would be optimal, but I threw out the old parts, and this is a no name cheap sub.

23rd August 2011, 09:30 PM	#10
Godfrd824 diyAudio Member Join Date: Aug 2011	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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