4 ohm dvc wiring
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=114546
Printed Date: May 13, 2025 at 6:24 PM
Topic: 4 ohm dvc wiring
Posted By: spmpdr
Subject: 4 ohm dvc wiring
Date Posted: June 18, 2009 at 5:07 PM
I would like to know how to wire my 2 12" dvc 4ohm subs to have a 2 0hm load to my amp wich is a memphis 500 watt rms 2 channel that can be bridged?If I wire these subs with a 2 ohm load and bridge my amp does it create a 1 ohm load? My amp is not stable at 1ohm , so should I wire them for 4ohm load then bridge the amp to create a 2 ohm load?
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-A vision without a plan is just a hallucination-
Replies:
Posted By: i am an idiot
Date Posted: June 18, 2009 at 5:55 PM
Your best bet is to wire one woofer to each channel of the amp. Each channel will see a 2 ohm load, which your amp can handle. Wire each woofer as follows and connect one to each channel of the amp. | Option 1 (parallel) = 2 ohm load
Voice coils wired in parallel
Recommended Amplifier: Stable at 2 or 1 ohm mono | 
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Posted By: stevdart
Date Posted: June 18, 2009 at 8:31 PM
spmpdr, you're confusing us. Your other thread claims that the amp is a monoblock. So what is it? ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: spmpdr
Date Posted: June 18, 2009 at 11:22 PM
sorry rookie move its a two channel it said class d so i assumed monoblock
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-A vision without a plan is just a hallucination-
Posted By: stevdart
Date Posted: June 19, 2009 at 12:54 AM
Still confused. What's the model of Memphis that you're talking about?
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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: spmpdr
Date Posted: June 20, 2009 at 12:03 PM
ok so i wired the subs just the way i am an idiot said, i adjusted my gains properly from the thread, but now my subs clip out with my amp only a quarter of the way up how is this possible if my amp is 250 watts rms per channel and my subs are rated 300watts rms per coil?
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-A vision without a plan is just a hallucination-
Posted By: i am an idiot
Date Posted: June 20, 2009 at 5:50 PM
stevdart wrote:
Still confused. What's the model of Memphis that you're talking about?
Posted By: spmpdr
Date Posted: June 20, 2009 at 7:49 PM
the model#is 16-mcd500 it turns out it is 500x1 monoblock class d sorry again for the confusion but it shows 2 channels at the terminals .so now how do i wire them ?
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-A vision without a plan is just a hallucination-
Posted By: spmpdr
Date Posted: June 20, 2009 at 7:54 PM
Voice coils wired in series, speakers wired in parallel
Recommended Amplifier: Stable at 4, 2, or 1 ohm mono
Two 4 ohm DVC Speakers = 4 ohm load
Do I wire them with a 4ohm load as stated above then bridge the amp giving it a 2 ohm load?
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-A vision without a plan is just a hallucination-
Posted By: i am an idiot
Date Posted: June 20, 2009 at 8:14 PM
Your amp has only one channel. There are 2 sets of speaker outputs on the amp, but the 2 positives are connected together. Same for the 2 negative terminals. They do this for ease of connectivity to your speakers. Why are you saying it is not 1 ohm stable? Does it have writing near the speaker terminals that says 2Ohm and 2Ohm by the other set of terminals? If so, they are telling you that you can connect 2 ohms worth of drivers to each set of terminals on the amp. 2 Ohm paralleled along with another 2 Ohm load will yield a 1 Ohm load. I think that amp is 1 Ohm stable. If you have documentation that states otherwise, go with that info. If you are going by the writing by the speaker terminals and they say 2 ohms on each set, the amp is 1 ohm stable. If it is only stable down to 2, use the following diagram. Option 2 (series/parallel) = 4 ohm load
Voice coils wired in series, speakers wired in parallel
Recommended Amplifier: Stable at 4, 2, or 1 ohm mono |  |
If it is stable down to 1 Ohm you can use the following diagram. Option 1 (parallel/parallel) = 1 ohm load
Voice coils wired in parallel, speakers wired in parallel
Recommended Amplifier: Stable at 1 ohm mono | 
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Posted By: spmpdr
Date Posted: June 20, 2009 at 8:19 PM
It does not state that its not 1ohm stable so should I try it ?or how can i find out if my amp is stable at 1 ohm.
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-A vision without a plan is just a hallucination-
Posted By: i am an idiot
Date Posted: June 20, 2009 at 8:23 PM
I checked, it is NOT stable at 1 Ohm. Use the diagram that says 4 Ohm load.
Posted By: spmpdr
Date Posted: June 20, 2009 at 8:26 PM
thanks again man, and I use the terminals that say bridged unde them right?
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-A vision without a plan is just a hallucination-
Posted By: i am an idiot
Date Posted: June 20, 2009 at 8:55 PM
Is this a picture of the end of your amp??? https://ampguts.realmofexcursion.com/Memphis_16-MC500D/outside3.jpg ------------- Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win. LGBFJB
Posted By: spmpdr
Date Posted: June 20, 2009 at 9:02 PM
it has a line connecting a posiitive and negative terminal.those are the terminnals i want to use right?
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-A vision without a plan is just a hallucination-
Posted By: i am an idiot
Date Posted: June 20, 2009 at 9:48 PM
Posted By: i am an idiot
Date Posted: June 20, 2009 at 9:49 PM
i am an idiot wrote:
i am an idiot wrote:
Is this a picture of the end of your amp??? https://ampguts.realmofexcursion.com/Memphis_16-MC500D/outside3.jpg
Posted By: spmpdr
Date Posted: June 20, 2009 at 9:53 PM
no its not
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-A vision without a plan is just a hallucination-
Posted By: spmpdr
Date Posted: June 20, 2009 at 9:55 PM
it looks like this
https://images......com/images/82684/big/16mcd500.jpg
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-A vision without a plan is just a hallucination-
Posted By: i am an idiot
Date Posted: June 20, 2009 at 10:10 PM
If you notice the line spans the entire length of the speaker terminals, it does not point to any terminal. This is a one channel amp. There may be 2 positive terminals and 2 negative terminals. The 2 positive terminals are connected together and the 2 negatives are connected together. It makes no difference which of the 2 you use. You can use both positives or just either one of them. Same for the grounds.
Notice the part that says 2 Ohm minimum, that would have saved a lot of typing.
Posted By: spmpdr
Date Posted: June 20, 2009 at 10:25 PM
sorry again man rookie move yuo live and you learn thanks for the patience and the advice
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-A vision without a plan is just a hallucination-
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