The High-End Flagship from Heco La Diva.Abtec Petone Christmas Message December 2020.These are just a few examples but once you have the basics down you can figure out much more complex systems using the same methods. This would be a typical installation and can be found in many installs. Check out the diagram below.Īs you can see we now used a combination of first wiring each sub in series, and then we wired the subwoofers in parallel at the amplifier. Now we need to wire them in parallel at the amplifier. This increases the Ohm load to 4 Ohm at each sub. So now you have two Dual 2 Ohm subs wired in series. So first you would take the subs and wire them in series like below. Think of it as a two step process this will make it easier to figure out. How do we do that? Lets go over this in a diagram. However, the dual 2 Ohm subs will use a combination: first we wire each subwoofer in a series and then wire them together in parallel at the amplifier. The two single 4 Ohm subs are easy to wire and you can see that in the diagram above. So if you decide you wanted to run two subwoofers on that amplifier you would need to run either two single 4 Ohm subwoofers or two dual 2 Ohm subwoofers. That amplifier will need to run at a 2 Ohm load to achieve maximum power. Let’s say you are running the amplifier I mentioned above. But the dual 2 Ohm subwoofers came to a 1 ohm load that’s too low, what do we do? You will normally have to use a combination of series and parallel to achieve the correct Ohm load. Okay now as you saw above the single 4 Ohm subs wired in a parallel resulted in a 2 Ohm load, just what we needed for the amplifier example from above. So 4 Ohm divided by two voice coils will equal a 2 Ohm load. So if wiring two Single 4 Ohm subs you would take 4 Ohm and divide it by the number of voice coils. In essence all the positives are connected on a single wire (conductor) and the same for the negatives. So you would run a lead from the positive voice coil on each sub to the opposite voice coil. When wiring in parallel you are decreasing the Ohm load and wiring the voice coils together. Moving on, an example of a parallel circuit can be seen below: So if you are wiring two Single 4 Ohm subs together you would add the two voice coils together sp 4 Ohm + 4 Ohm equals an end result of 8 Ohm. To add this up you take the 4 Ohm load of each coil and add them together. So as you can see pictured the positive hops to negative on the opposite voice coil. When wiring in series you are increasing the Ohm load by hopping from one voice coil to the next. So an example of a series circuit can be viewed below. Just remember wiring in series it is used to INCREASE the Ohm load and parallel is used to DECREASE the Ohm load. Lets look at each example before we figure out exactly how to wire our amplifier example from above. There are two terms that you will need to know when wiring subs or speakers, Parallel and Series. So how do we do that? This is where things tend to get a little trickier however it is not as hard as it may seem. Using the same amplifier ratings from above we now know that we want to wire the amp at a 2 Ohm load. Next we will look at subwoofers and how to wire them properly to the amplifier. Every time an Ohm load is multiplied by 2 the current will be cut by half. Every time an Ohm load is divided by 2 the current will double in amperage. The larger pipe above would represent a 2 Ohm load whereas the smaller pipe would be 4 Ohm. Now if you look at my diagram above you can really see how it works. Most amplifiers have a thermal protection circuit however, it is still possible to damage the amplifier. You would not want to run this amplifier lower than a 2 Ohm load otherwise you can potentially burn it up since it would be running at twice the recommended power rating and capabilities. To get the maximum output out of the amplifier rating listed above you want to make sure it is wired at a 2 Ohm load, running the same amplifier at a 4 Ohm load will result in a 50% loss in potential power. Now this is really important when purchasing equipment. All amplifiers will feature a rating which will usually look something like this. In a car audio you should always run your equipment at the lowest possible Ohm load that an amplifier, head unit or speaker can safely handle. You need to know the ohms of all of your speakers if you want to calculate the load your amp is taking and to compensate for it. An 8 ohm speaker requires more amperage to run than a 4 ohm speaker. The less energy, the more you get out of your amps. The lower the ohms the less energy it takes to drive the speaker. The ohm is a measurement of the electric resistance between two points.
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