Are you planning to get a new amplifier for the subwoofers? If yes, you might be pretty confused. After all, getting the perfect amp for your subs is like solving a tricky puzzle. So, how do you match subwoofers and amplifiers? What size amp for 2 10 inch subs?
Actually, it solely depends on the RMS (Root mean square) & Impedance of both amplifier and subwoofer. For instance, if you have a 1000-wattage subwoofer, you need an amp with 1000-wattage RMS as well. Besides, you need to pay attention to Ohm ratings for the subwoofer’s Impedance as well.
In this context, we have highlighted a detailed calculation to determine the perfect wattage. Once you pair the right amp with the right subs, you will definitely notice a noteworthy difference in sound quality. So, are you ready to enjoy the car ride with your favorite music?
Contents
Basics of Amplifiers And Subwoofers
In order to calculate the amp size, you first need to know the basics of the car audio system first. After all, the perfect pairing between amps and subs solely depends on these terminologies. So, let’s check out!
What Is Power?
The power generated in the amplifier directly goes to the subwoofer. It is usually measured in watts. The peak wattage handled by the subwoofer is known as pick power. We measure its continuous power handling with RMS watts.
Thus, RMS is the power a subwoofer handles on a continuous and regular basis. In contrast, peak power is the maximum power a subwoofer can handle. If the amplifier provides excess power exceeding the peak power, it might even destroy the whole stereo system.
In the market, all amps come with an RMS rating referring to the minimum and maximum wattage provided. So, when you buy an amplifier, be sure that its maximum wattage is within the subwoofer’s RMS rating.
What Is Impedance?
By Impedance, we refer to the speaker’s resistance. To be specific, it is the restriction in the flow of electricity; you already know from our high-school studies that – Resistance is measured in ohm.
All subwoofers usually come with an impedance of 2 to 4 ohm. This Impedance of the subwoofer significantly affects the amplifier connected to it.
For example, a subwoofer with a 4-ohm impedance will receive 550 wattages from an amplifier. But that same amplifier will provide 1100-watt electricity to a 2-ohm subwoofer. Thus, increased subwoofer impedance will increase the workload of the amplifier.
Why Is It Important to Pair the Right Subs With the Right Amps?
Matching the right amp with the right sub is indeed necessary.
Let’s imagine a scenario where the amplifier provides excess energy to the subwoofer. In that case the wattage will exceed the peak power handling. As a result, there will be –
- Overheating.
- The sound quality might be distorted.
- Damage to both subwoofer, amplifier as well as the full stereo system.
How to Choose the Right Amp for 2 10-Inch Subs?
When selecting the right amplifier for two 10-inch subwoofers, it is crucial to consider a few key factors to ensure optimal performance. Let’s dig into it.
Determine The Perfect Wattage
In order to determine the size, we first have to determine the RMS rating. So, What amp size do I need? Let’s calculate.
Are you using more than one subwoofer at once? If yes, first add up their RMS ratings together and measure their combined power.
Thus, the formula will be :-
RMS of Subwoofer 1 + RMS of Subwoofer 2 = Combined power of 2 subs.
So, if you are using 2 10-inch subs of 400 watts together, the mean power will be 800 watts.
Now, you can purchase an amp that provides power within the range of combined power ratings. If there is a slight power difference, it’s ok. But an excess gap will just damage the car’s audio system.
Match Up The Impedance
Always match up the sub’s Impedance to the amplifier. After all, Impedance has a direct effect on the workload of the amp.
If you are dealing with more than one sub, first consider the wiring. After all, the impedance changes according to the wiring style.
Suppose you have 2 subs of 4 ohms arranged in series; then the total Impedance will be (4+4) = 8 ohms.
If 4-ohm subs are arranged in parallel wiring, then the formula will be
1/Ω = ¼ + ¼ = ½
So, Ω = 2.
In the market, you will also find online apps that directly calculate the perfect amp size for the subs.
Achieve The Preferred Sound Quality
Before you purchase an amp, be clear about your sound needs. Some amps are best for their bass response. In contrast, other amps might deliver sound at a better frequency. Remember, amps are not the only power providers. They can affect the sound quality significantly as well.
FAQ
1. What Amp Do You Need for 2 Inch Subs?
– The required amp size for 2-inch subs depends on their power handling capabilities and the desired sound output. Generally, small subs like 2-inch ones don’t require large amplifiers. A compact, low-power amplifier with around 50-100 watts RMS output per channel should be sufficient for 2-inch subs. However, it’s essential to match the amplifier’s power output with the subs’ power handling to avoid damaging them. Always consult the specifications provided by the manufacturer for optimal performance.
2. What Size Amp Do I Need for 2 1200-Watt Subs?
– Together, two 1200-watt subwoofers have an RMS power rating of 2400 watts. Thus, the amplifier you will choose should also provide around 2400 watts of electricity. Don’t forget to check the Impedance and their wirings as well. Large Impedance will indicate increased workload and decreased amp output.
Final Verdict
What amp size for 2 10 inch subs do you need? I bet you were confused at first. After all, you have to consider multiple factors like power supply, resistance, sound quality, etc. However, I believe our content has given you an idea of how to calculate wattage as well as Impedance for multiple subs. Always check the specifications provided by the manufacturer to ensure compatibility and avoid damaging your subs. If you are still confused, you may ask for professional assistance as well.
