While a subwoofer is a must-have sound equipment for a bass enthusiast, most people get confused about terms such as wattage, impedance, and resistance. Resistance, to be specific, is a term hardly known by most people. Basically, resistance is a measure of the opposition to the flow of electric current by an electric circuit. Resistance is denoted in ohms.
Subwoofers are usually fed with an audio signal in the form of an electric current from a head unit or amplifier. They have a certain level of resistance to an audio signal. Most subwoofers available today have a resistance rating of either 2 ohms or 4 ohms.
Although your stereo or amp may work just okay with either a 2 or 4 ohm sub, it would help to know which would work best for the best bass quality. Check 2 Ohm Subwoofer Price. When buying a subwoofer and notice a subwoofer rated as 2 ohm, it means that its resistance is level as at 2 ohms. As such, an amplifier is able to feed it with more power without much resistance.
Since the resistance is low, it means that the sub will be louder. However, it consumes more power due to its minimal resistance, and this leads to lower quality in bass.
A subwoofer with a resistance rating of 4 ohms means that it has higher resistance. We have briefly discussed the differences between the two. Now, we will further analyse what makes these unit so different from each other. These units are identified by their rating. Any unit with a resistance rating of 2-ohms is a 2-ohm subwoofer. The implication of the rating is that the resistance value is low. And as any good technician will know, lower resistance values means that the amp can feed the speaker without plenty of resistance.
If you want a pretty loud system, then a 2-ohm speaker might be just what you need. The downside of this sound system is the amount of power used. This increased power usage is because of the low resistance. Because of the higher resistivity, it is not as loud as the 2-ohm speaker system. You do not get as much bass. While this might be a bummer, the advantage of the higher resistance is lower power consumption.
Additionally, you enjoy the better sound performance and higher quality bass despite the lower sound. For some vehicle owners, more is better. They want the absolute best sound from the sound system. That is why some opt to install more than one subwoofer. One of the most important factors to consider is how you will connect the multiple units. This factor is importance since it will affects the sound output. As with connecting resistors or other electrical components, you can connect your units either in series or parallel.
Connecting in series means that you are connecting the unit in a line, that is, one after the other. You connect the negative point from a unit and join it to the positive terminal of the next. Parallel connection, on the other hand, is like stacking the units one on the other. This means that if you were to wire 2 subwoofers that have a resistance of 2 ohms each, it would add up, and you would get a total resistance of 4 ohms.
However, if you were to wire the same subwoofers parallel then the total resistance is divided by the number of subwoofers, so in this instance the total resistance would be 1 ohm. Overall, wiring in series increases the resistance, wiring in parallel decreases the resistance. So, if you wanted two subwoofers and wanted to get good bass, then you could wire them in series and end up with 4 ohms of resistance.
However, if you wanted two subwoofers and your desire was louder sound, then you would wire them parallel. It depends on how you wire them. Consider, in this situation, not only the ohms but also how you would wire these subwoofers. A majority of subwoofers will have a single voice coil. Some may also come with dual voice coils. You can have a subwoofer with a dual voice coil, in which each voice coil will have a total resistance of 2 ohms, or 4 ohms.
Similar to dealing with multiple subwoofers, the kind of wiring used determines the overall resistance of a dual voice coil subwoofer. If you have a subwoofer that has a dual voice coil, and each voice coil has 4 ohms, then you can wire it in series and get more resistance, resulting in 8 ohms overall. Or, if you wire it in parallel and decrease the resistance, getting 2 ohms overall. Much like with multiple subwoofers, in this instance you also need to consider both the ohms and the wiring.
How you wire the subwoofers will determine the overall resistance and therefore the sound that you receive as a result. Of course, size and brand also make a play in the costs of a subwoofer. Really the price is not dramatically different, but there is still a difference between them, and if you are on a tight budget this can be a deciding factor. What is also worth considering is that there is also about a 2. The overall differences between a 2 ohm subwoofer and a 4 ohm subwoofer are really not that significant, and they will generally produce a similar quality of sound in some circumstances, so long as they are run at the same wattage.
This is because watts and ohms are all part of a series of mathematical formulas that put them together so that when one changes in value, so does the other.
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