AllanLuberda Posted November 29, 2012 Report Share Posted November 29, 2012 How do you wind a coil too a 4 ohm resistance? Im pretty sure you need a multimeter, but what else? If i can figured out what i need and how to do this, I wanna attempt to wind a coil. Cant find much on google lol. Link to comment Share on other sites More sharing options...
army_guy137 Posted November 29, 2012 Report Share Posted November 29, 2012 Basically it's like this, a coil is single wire wound around and around. The wire naturally has "SOME" resistance in it. So it's a TON of windings to make a 4 ohm coil. Link to comment Share on other sites More sharing options...
AllanLuberda Posted November 29, 2012 Author Report Share Posted November 29, 2012 exactly how many windings?How many layers? and what size gauge wire?What length coil?I wonder if there is a math formula for it. do you just insulate coil 1 from coil 2 after 4, or 8 layers to get a dvc coil? Link to comment Share on other sites More sharing options...
S15_Silvia Posted November 29, 2012 Report Share Posted November 29, 2012 I'm sure there is a formula for it. There are formulas for making inductors, so there must be a way to figure resistance based on the properties of the wire and number of windings. I really hope someone from a manufacturer jumps in to provide more wisdom. I can also ask one of my professors. 2016 Subaru BRZ | Sony XAV-AX100 | Rockford Fosgate DSM 4080 & DSM 40ix | On 6/6/2012 at 6:32 PM, 'LZTYBRN' said: 3. Don't put speakers outside the car unless you are the ice cream man. My feedback thread Link to comment Share on other sites More sharing options...
AllanLuberda Posted November 29, 2012 Author Report Share Posted November 29, 2012 I'm sure there is a formula for it. There are formulas for making inductors, so there must be a way to figure resistance based on the properties of the wire and number of windings. I really hope someone from a manufacturer jumps in to provide more wisdom. I can also ask one of my professors. Lol hope we do get someone who knows, I have a fealing alot of people are wondering this, and there just isnt much info online for it. Link to comment Share on other sites More sharing options...
armykyle1 Posted November 29, 2012 Report Share Posted November 29, 2012 the way some companies get D1 coils, is actually four coils paralleled together, might be true for some D2 coils. Lets say you get a coil that's a D2 but you need a S2, you can actually remove the outer windings with out damaging the inner coil. You have different wire used in different applications, one sub might be a 8 layer coil but uses a 24ga winding then you might have a 4 layer coil with 16ga windings, but each one might have the same thickness. But it's not usually winding a coil to set resistance, it's picking the proper winding wire to give the 4ohm resistance. There are quite a few different techniques used to build coils. Then you can go into the realm of former material. Kapton, stainless, aluminum, titanium and there's a few others. Each offering unique properties. TEAM XS POWERTEAM HEAVY HERTZMy build- http://www.stevemeadedesigns.com/board/topic/194454-e46-bmw-build-pos/#entry2914134youtube- http://www.youtube.com/user/armykyle1big build starting Link to comment Share on other sites More sharing options...
armykyle1 Posted November 29, 2012 Report Share Posted November 29, 2012 Hope that gives you some insight. TEAM XS POWERTEAM HEAVY HERTZMy build- http://www.stevemeadedesigns.com/board/topic/194454-e46-bmw-build-pos/#entry2914134youtube- http://www.youtube.com/user/armykyle1big build starting Link to comment Share on other sites More sharing options...
bkolfo4 Posted November 29, 2012 Report Share Posted November 29, 2012 Don't forget to use the proper temp rating if you are trying to actually build a speaker. When you find magnetic wire, it should have a DCR rating. Ohms/Kft, or sometimes it will have how many ft is 1 ohm. For a 4 ohm driver, you should be safe to wind to ~3.5 DCR. Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
AllanLuberda Posted November 29, 2012 Author Report Share Posted November 29, 2012 interesting guys tell me more, i wanna get every bit of info on this for me and everyone else. Link to comment Share on other sites More sharing options...
Sanitarium Posted November 29, 2012 Report Share Posted November 29, 2012 exactly how many windings?How many layers? and what size gauge wire?What length coil?I wonder if there is a math formula for it. do you just insulate coil 1 from coil 2 after 4, or 8 layers to get a dvc coil? Exactly 42 winds will give you everything you could want. 42 is the answer. because every former is exactly the same size, every wind is exactly the same, every piece of wire has exactly the same amount of resistance. Link to comment Share on other sites More sharing options...
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