Dimming Headlights (Wiring Question)
#16
Your Alpine Type R sub has dual 4 ohm voice coils. Your amplifier is stable to 2 ohms. If you wire your subwoofer in parallel, it will present a 2 ohm load to your amplifier.
The JL Audio web site has a decent tutorial that explains what this means. Check out the section labeled "1 DVC driver with Voice Coils in Parallel".
Wiring Your Subs: Dual Voice Coils
The JL Audio web site has a decent tutorial that explains what this means. Check out the section labeled "1 DVC driver with Voice Coils in Parallel".
Wiring Your Subs: Dual Voice Coils
#17
Originally Posted by jimrockford
Your Alpine Type R sub has dual 4 ohm voice coils. Your amplifier is stable to 2 ohms. If you wire your subwoofer in parallel, it will present a 2 ohm load to your amplifier.
The JL Audio web site has a decent tutorial that explains what this means. Check out the section labeled "1 DVC driver with Voice Coils in Parallel".
Wiring Your Subs: Dual Voice Coils
The JL Audio web site has a decent tutorial that explains what this means. Check out the section labeled "1 DVC driver with Voice Coils in Parallel".
Wiring Your Subs: Dual Voice Coils
#18
Originally Posted by Ktm.Moto
Alright thank you. So I should re-wire it like that if its not already?
If you have the dual 4-ohm version, you definitely want it wired in parallel. If you have the 2-ohm version, it should be wired in series. Hopefully, you have the dual 4-ohm model as it is a much better fit for your situation.
#19
Originally Posted by jimrockford
I just looked at the Alpine web site. I assumed your sub was dual 4-ohm based on a quick Google search. It looks like they have two versions. One version is dual 2-ohm.
If you have the dual 4-ohm version, you definitely want it wired in parallel. If you have the 2-ohm version, it should be wired in series. Hopefully, you have the dual 4-ohm model as it is a much better fit for your situation.
If you have the dual 4-ohm version, you definitely want it wired in parallel. If you have the 2-ohm version, it should be wired in series. Hopefully, you have the dual 4-ohm model as it is a much better fit for your situation.
#20
Where did you buy it? If it was from a reputable shop, they wouldn't have sold you the 2-ohm version. It would work well in a two sub setup, but not alone with a 2-ohm stable amp.
The sub should be marked with the impedence somewhere or at least have a model number listed. Model SWR-1022D is 2 ohm; SWR-1042D is 4 ohm.
The sub should be marked with the impedence somewhere or at least have a model number listed. Model SWR-1022D is 2 ohm; SWR-1042D is 4 ohm.
#21
Originally Posted by jimrockford
Where did you buy it? If it was from a reputable shop, they wouldn't have sold you the 2-ohm version. It would work well in a two sub setup, but not alone with a 2-ohm stable amp.
The sub should be marked with the impedence somewhere or at least have a model number listed. Model SWR-1022D is 2 ohm; SWR-1042D is 4 ohm.
The sub should be marked with the impedence somewhere or at least have a model number listed. Model SWR-1022D is 2 ohm; SWR-1042D is 4 ohm.
#25
I don't think this will affect your alternator. You are actually stressing it less in this condition than if the wire gauge were thicker. Since the amp can't pull all the power it wants, the alternator doesn't have to charge the battery as much.
I don't remember hearing of any serious electrical problems attributed to headlight dimming. However, I imagine it puts a strain on the amp in terms of heat build up and on other electrical components sensitive to undervoltage.
I don't remember hearing of any serious electrical problems attributed to headlight dimming. However, I imagine it puts a strain on the amp in terms of heat build up and on other electrical components sensitive to undervoltage.
#26
Originally Posted by jimrockford
I don't think this will affect your alternator. You are actually stressing it less in this condition than if the wire gauge were thicker. Since the amp can't pull all the power it wants, the alternator doesn't have to charge the battery as much.
I don't remember hearing of any serious electrical problems attributed to headlight dimming. However, I imagine it puts a strain on the amp in terms of heat build up and on other electrical components sensitive to undervoltage.
I don't remember hearing of any serious electrical problems attributed to headlight dimming. However, I imagine it puts a strain on the amp in terms of heat build up and on other electrical components sensitive to undervoltage.
#27
Yeah, I might be incorrect. I'm thinking more of an undersized power cable running to the amp. Now that I give it more thought, the alternator could be in jeopardy due to the resistance posed by the combination of an undersized "big 3" and increased load.
Maybe someone else can chime in with better information.
Maybe someone else can chime in with better information.
#28
Originally Posted by jimrockford
Yeah, I might be incorrect. I'm thinking more of an undersized power cable running to the amp. Now that I give it more thought, the alternator could be in jeopardy due to the resistance posed by the combination of an undersized "big 3" and increased load.
Maybe someone else can chime in with better information.
Maybe someone else can chime in with better information.
#30
dimming lights are usual for people with system like everyone say u should do the BIG 3 and off course cap will not help ur lights from dimming i have 5farad cap running 1000/1 jl amp and 12inch w7 but what i would do is get a better alternator and i recommend u brg it to a shop if that doesnt stop ur lights from dimming then go red or yellow top utimadrive battery.
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