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penguinspike

Dual Voice Coil Question

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I'm in the process of designing my first sound system and like most people I have a question.  Let's say you have a Dual Voice Coil (4 ohm per coil) sub that is rated at 600 watt RMS, is that 600 watt RMS the total for both coils or each coil?  Sorry if this has been discussed before, I couldn't find it when I was searching for it.

Penguinspike

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usually total, so 300 per coil

good info for newbs https://jlaudio.zendesk.com/hc/en-us/categories/200265750-Car-Audio-Support?mobile_site=false

tones for amp gain setting.. https://www.realmofexcursion.com/downloads.htm

Edited by nauc

Alpine 9887, Oz ME 180CS, RF R500X1D, 12" RE SE Sealed, Second Skin Damp Pro

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Power ratings are always the total capability of all voice coils. 

  • Thanks 1

giphy.gif

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Ok, so if I wire the speaker parallel, it will create a 2 ohm load on the amp.  So in theory I should match the amp to the sub at 2 ohm at 600 RMS, correct?  

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Thanks for the info also.

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one dual 4 om sub wiring diagram to a 2 ohm final load

https://www.the12volt.com/caraudio/subwoofer-wiring-diagrams.asp?Q=1&I=42

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2)American Bass VFL Mini Hybrid 4480.1D@1ohm Ea 4)American Bass XFL DVC 4ohm 12s@2.06cu Ft Ea.@32htz CDT 6,5 HD6 Briax.,CDT CL60,CDT 25 tweets,Kicker KS25 tweets Autotek Mean Machine 99@2ohms,Autotek BTX 7204@40hms AlterStarts Alt 255A/Dallas,Tx,2)Orileys Super Start AGM batts(1more coming)Cadence CCA 0ga on Big 6,AudioTechnix 0ga CCA Kicker Kq9 Eq,Eclipse CD3000(lookingfor upgrade)StingerPro Distro,3)XS Scorpian 8in Scroll Fans 1998 3dr Xcab Chevy(under construction,but operational)

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or a little more power.  headroom is good


Alpine 9887, Oz ME 180CS, RF R500X1D, 12" RE SE Sealed, Second Skin Damp Pro

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what gear you looking at?  what vehicle?


Alpine 9887, Oz ME 180CS, RF R500X1D, 12" RE SE Sealed, Second Skin Damp Pro

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I'm not sure what gear to get.  I'm changing out my entire system, the head unit, all the door speakers, and going to install a single sub and amp.  I'm looking for something that is budget friendly.  I'm not looking to rattle the neighborhood, just want some nice bass.  I have a hatchback, so space is pretty limited.  I was thinking about an 8 inch or 10 inch sub in a custom made fiberglass enclosure. 

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2 hours ago, penguinspike said:

Ok, so if I wire the speaker parallel, it will create a 2 ohm load on the amp.  So in theory I should match the amp to the sub at 2 ohm at 600 RMS, correct?  

Yes, but if you haven't selected an amp yet you might hold off on buying a sub to match impedance to whatever the amp likes.   There's been a couple solid budget 600-800W amps discussed here recently that should do great.

Also "budget" and fiberglass shouldn't be in the same sentence.  It is very expensive to do it right and also very time consuming and requires a fair bit of patience. (sand, bondo, sand, bondo, sand, bondo, sand, paint, sand, paint, wet sand, paint.....)  At least if you want it to look like the stuff you'd see in a magazine.  It's like proper bodywork to get that mirror finish and assuming you're a novice with fiberglass and aren't working off a mold you might even add some more bondo/sand steps to get it really clean before you even touch the paint. 

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It will not be anything like in a magazine.  I was planning on getting it formed and fairly smooth, then just covering it in a fabric that matched my interior. 

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3 hours ago, audiobaun said:

one dual 4 om sub wiring diagram to a 2 ohm final load

https://www.the12volt.com/caraudio/subwoofer-wiring-diagrams.asp?Q=1&I=42

Yep, that's how my dual VC sub is wired. Sounds great!

John Kuthe...


2006 Grand Caravan "Baby II"

Alpine CDE-153BT HU

Alpine PXA-H800 DSP

Alpine PDX-V9 main amp

Alpine PDR-V75 secondary amp

4 Alpine SPR-69 6x9" midrange

2 PHD 5.1 AF 5.25" drivers w/ separate tweeters and passive crossovers with plans of going full active!

JL Audio 12TW3-D4 400W TW3 Thin-Line Series 12" Dual 4 ohm Subwoofer set to 2 Ohms

Damplifier Pro, BQuiet and Luxury Liner Pro sound deadening, lots!

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1 hour ago, penguinspike said:

It will not be anything like in a magazine.  I was planning on getting it formed and fairly smooth, then just covering it in a fabric that matched my interior. 

It will still take a lot of material to build it thick enough to not flex and even under carpet you'll want to get it relatively smooth which will take some doing.   Not to discourage you, but don't expect it to be cheap and be ready to invest a lot of time into it.

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I know, I've worked with fiberglass before it sucks.  My enclosure options are either:  

1. custom make one out of fiberglass to fit in a certain crevasse in my car

2. cut out part of the factory plastic trim and try to build a wooden box to fit it

3. just build a small wooden box and give up some storage space

4. I know that certain models of my car came with the monsoon system, which included a 6.5" sub, so try to find one of those and graft it into my car.  The enclosure for that sub was plastic though.

 

 

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19 hours ago, penguinspike said:

I know, I've worked with fiberglass before it sucks.  My enclosure options are either:  

1. custom make one out of fiberglass to fit in a certain crevasse in my car

2. cut out part of the factory plastic trim and try to build a wooden box to fit it

3. just build a small wooden box and give up some storage space

4. I know that certain models of my car came with the monsoon system, which included a 6.5" sub, so try to find one of those and graft it into my car.  The enclosure for that sub was plastic though.

 

 

You still havent mentioned what type of vehicle. Being a Monsoon system Im guessing a Ford type vehicle.What audio gear do you have now? Some of it may be used quite nicely to save some funds for other gear as well. I still use an older Eclipse Hu quite a bit and swap out old amplifiers depending on what I want in that certain vehicle and utilize other funds else where.


2)American Bass VFL Mini Hybrid 4480.1D@1ohm Ea 4)American Bass XFL DVC 4ohm 12s@2.06cu Ft Ea.@32htz CDT 6,5 HD6 Briax.,CDT CL60,CDT 25 tweets,Kicker KS25 tweets Autotek Mean Machine 99@2ohms,Autotek BTX 7204@40hms AlterStarts Alt 255A/Dallas,Tx,2)Orileys Super Start AGM batts(1more coming)Cadence CCA 0ga on Big 6,AudioTechnix 0ga CCA Kicker Kq9 Eq,Eclipse CD3000(lookingfor upgrade)StingerPro Distro,3)XS Scorpian 8in Scroll Fans 1998 3dr Xcab Chevy(under construction,but operational)

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Sorry, I have a 2004 Toyota Matrix.  My entire system is factory.

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29 minutes ago, penguinspike said:

Sorry, I have a 2004 Toyota Matrix.  My entire system is factory.

I have only had the pleasure of changing out stock 6.5s in one thats about it.I didnt spend alot of time in it. Its the neighbors daughters vehicle, and she is still enjoying the Drop in Polk 6.5 DB speakers thus far.What are you wanting to do in there?What kind of sound system are you looking into ?Clean Clear? Loud and clean, or just Loud?What is your budget?One 10" decent subwoofer may surfice on the sub stage for you if box is built properly and enough power.What kind of room you willing to give up?Those seats fold down in the rear.You cant expect to get any real lows without giving up some space.Great HU is where it all starts for any tpe of system.decent Mids and highs and supply for the demand.

Edited by audiobaun

2)American Bass VFL Mini Hybrid 4480.1D@1ohm Ea 4)American Bass XFL DVC 4ohm 12s@2.06cu Ft Ea.@32htz CDT 6,5 HD6 Briax.,CDT CL60,CDT 25 tweets,Kicker KS25 tweets Autotek Mean Machine 99@2ohms,Autotek BTX 7204@40hms AlterStarts Alt 255A/Dallas,Tx,2)Orileys Super Start AGM batts(1more coming)Cadence CCA 0ga on Big 6,AudioTechnix 0ga CCA Kicker Kq9 Eq,Eclipse CD3000(lookingfor upgrade)StingerPro Distro,3)XS Scorpian 8in Scroll Fans 1998 3dr Xcab Chevy(under construction,but operational)

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this looks cool

DSC00833.jpg


Alpine 9887, Oz ME 180CS, RF R500X1D, 12" RE SE Sealed, Second Skin Damp Pro

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11 minutes ago, nauc said:

this looks cool

DSC00833.jpg

Ya,Id have to have something to protect that sub in that location. Id prob go ported myself


2)American Bass VFL Mini Hybrid 4480.1D@1ohm Ea 4)American Bass XFL DVC 4ohm 12s@2.06cu Ft Ea.@32htz CDT 6,5 HD6 Briax.,CDT CL60,CDT 25 tweets,Kicker KS25 tweets Autotek Mean Machine 99@2ohms,Autotek BTX 7204@40hms AlterStarts Alt 255A/Dallas,Tx,2)Orileys Super Start AGM batts(1more coming)Cadence CCA 0ga on Big 6,AudioTechnix 0ga CCA Kicker Kq9 Eq,Eclipse CD3000(lookingfor upgrade)StingerPro Distro,3)XS Scorpian 8in Scroll Fans 1998 3dr Xcab Chevy(under construction,but operational)

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I want a system that is clean and clear that I can crank up.  I listen to all types of music.  Today on my way to work, I was listening to Chris Stapleton, Five Finger Death Punch, Theory of a Deadman, Post Malone, etc.  I am looking the Pioneer DEH-S31BT CD Reciver with Bluetooth, mainly because it has the same color scheme as my dash gauges and I can pick up it up at Wal-Mart for $69.97.  I figure that I can replace the front & rear door speakers for between $30 to $50 per set, but can't decide if I want to go coaxial or component.  The sub & amp part, I would prefer to not spend an arm & a leg on.

I saw that picture Nauc and believe that is either a 6.5 or an 8 inch subwoofer.  That little gap in front of the sub enclosure is the lid to access the spare tire.  I've been leaning toward either an 8 in or 10 in single sub.  I figure that I can do something similar with fiberglass like either that one or this one.

Image result for toyota matrix subwoofer

 

 

 

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