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How to Measure a Car Speaker? | Step-By-Step Guide

how to measure a car speaker

It’s incredible to make your car rides more enjoyable by playing fantastic music. While the standard car stereo works for most people, true audiophiles know that it may fall short of expectations. Knowing how to measure a car speaker is essential if you enjoy high-quality sound.

Whether you want a completely new stereo system or better speakers, you need the right fit. Don’t be worried; measuring car speakers is simple.

It’s a valuable skill that can save you from having to return items or make changes that aren’t necessary. Let’s keep it simple so you can accurately measure your car speakers. Are you ready to make your car sound incredible? Let’s get started!

How to Measure a Car Speaker?

There are a few things to consider when determining the size of your car speakers. To get it right, you’ll need to measure various parts such as the mounting depth, mounting height, speaker’s diameter, and screw distances.

By measuring these things, you’ll have all the information you need to select the ideal-sized speaker for your vehicle. Gather a measuring tape, panel removal tools, screwdriver, pen, and notepad to measure your car speakers effectively. Now, follow these steps to know how to measure car speakers:

1: Remove the Panel

The first step in changing the speakers on your dashboard or door is to remove the panel. To reveal those speakers, use that handy panel-removing tool. Here’s the best part: if you only deal with the front or back speakers, you can skip this step.

1: Remove the Panel

The first step in changing the speakers on your dashboard or door is to remove the panel. To reveal those speakers, use that handy panel-removing tool. Here’s the best part: if you only deal with the front or back speakers, you can skip this step.

2: Remove the Car Speakers

Grab your panel removal tools and a trusty screwdriver for this step. First and foremost, turn off your car to ensure no power is flowing to the speakers. Remove any covers or grills in front of the speaker. You can do this by unscrewing them or gently popping them out.

Once you remove the covers, you’ll notice the screws that hold the speaker in place. Unscrew them, then gently pull the speaker out of the mounting hole. Finally, unplug the speaker’s wires. 

3: Measure the Mounting Depth

The first thing to measure is the speaker’s mounting depth. All you have to do is measure from the bottom plane to the speaker’s magnet. Then, using your notepad, record the length.

The mounting depth ensures that your speaker fits vertically in the slot. If you make a mistake with the mounting depth, you won’t be able to screw the speakers into the space.

4: Measure the Speaker's Height

Then, measure the height of the speakers. You begin where the previous step left off. This time, however, you must calculate to the top of the speakers. Measuring the height will ensure the speaker fits perfectly and does not stick out.

5: Measure the Diameter of the Car Speaker

The most critical aspect of measuring your speaker is its diameter, which will determine the size of the speaker you will purchase.

You can measure the diameter by holding the tape at one end. Then, extend it to the other hand. The key is to keep the tape straight and centered on the speaker. Otherwise, you risk taking the incorrect measurements.

Also, measure the diameter from both the width and length perspectives, as some speakers have different diameters for width and length. If you want, you can also measure the diameter of the cutout. This will ensure a perfect fit for your car speakers. 

6: Measure the Screw Distances

You must also measure the screw distances if you do not want to drill holes in your car. So, when shopping for a new speaker, remember these screw-hole distances.

It allows the new speaker to fit perfectly into your car without the need for any drilling. It is, however, not the most important part, and you can skip it if you intend to use different screws anyway.

That’s the simple steps to get the perfect measurements for your car speakers. Now, you know how to measure car speakers by taking note of the diameter, height, and mounting depth. These measurements will assist you in finding the right speakers for your vehicle without additional drilling.

Car Speakers Sizes And Dimensions

There are numerous sizes of car speakers available. Which one you should get is determined by the model and brand of your vehicle. There are some standard speaker sizes, but manufacturers will make slight variations. So, when purchasing a speaker, pay attention to the minor differences.

Now, look at some of the most common speaker dimensions available.

  • 5-inch speakers: These sizes can be installed on your dashboard or in smaller spaces. In places where more prominent speakers can’t fit, people use them. They produce low bass but excellent highs.
  • 4-inch speakers: These are used in the same way as 3.5-inch speakers. However, in terms of sound quality, they are an improvement over the previous one. They sound slightly better than the 3.5-inch ones. They are available as tweeters or as woofers.
  • 25-inch speakers: This is where you can start to hear some mid-bass. They are a prevalent dimension for a car speaker. As a result, there are numerous options for this size variant.
  • 4×6 speakers: This is another type of 4-inch speaker. The only difference is that it has a larger cone surface area than the regular one. This enables the speakers to produce better sound within the same space. However, due to their placement, you will get little bass out of these.
  • 5×7 speakers: While not the most common speaker size, they have their uses. You can mount them on your rear door or side panel. They produce adequate but not excessive bass and have average power handling capability.

Aside from these, the 4×10 size is unique. These speakers are better suited to spaces with longer lengths and smaller widths. These types of speakers are rarely seen or used.

Now, which one you need is determined by the ones you already have

Other Factors to Consider

When swapping out or enhancing your car speakers, take into account other factors to guarantee optimal performance from your new arrangement. Aside from the physical dimensions of the speakers, the following are some other important metrics to consider:

1: The Power Rating of the Car Stereo

Speakers differ not only in size but also in other aspects, such as power ratings and sensitivity. Two speakers with similar physical dimensions but different power requirements would fit different stereo systems.

It is critical for good sound that your speakers’ power matches your stereo’s power. It’s better to know about it before than deal with disappointing sounds later. High-powered stereos typically pair well with low-sensitivity speakers and vice versa. So, when selecting speakers for your car stereo system, choose those with the same power rating.

2: The Types of Screws to Mount the Speakers

When it comes to matching speakers for your car, the type of screws you use may not matter, but they can save you a lot of time and effort. Using the same mounting screws as your old speakers eliminates the need to drill new holes. The closer they match in size and form, the more ideal it is as they will seamlessly fit into the existing holes, ensuring a snug fit.

3: The Speaker's Weight

Depending on where you plan to mount the speakers, their weight becomes an important consideration. For example, speakers for mounting inside door panels must be lightweight to avoid adding unnecessary weight to the doors. However, weight is fine for speakers mounted in other areas of the car.

Conclusion

To summarize, understanding how to measure a car speaker is critical for any car owner. After all, you might need to replace your current car speakers. To measure your car speakers, check the mounting depth, diameter, and screw distances.

You can easily measure the dimensions needed for a perfect fit using simple tools like a measuring tape and a screwdriver. When shopping for new car speakers, size is the most crucial factor. Now, you won’t have any trouble finding the ideal speakers for your car as you know how to do it.

Frequently asked Questions (FAQs)

To determine the size of your car speakers, measure the diameter for width, the mounting depth, and height and take note of these dimensions. This information ensures you find speakers that work seamlessly with your car’s audio system.

Size isn’t the only factor to consider when purchasing a speaker. Other considerations include power ratings, types of screws, and weight. Considering all of these factors contributes to finding the ideal speaker. However, size should be the first consideration because you can only use a speaker with the correct dimensions.

No, speaker sizes vary depending on the manufacturer. The essential size proportion may remain constant, but there are minor variations. So, when purchasing a speaker, don’t just look at the dimensions; also look for slight differences in the measurements.

To measure the car speaker’s cutout diameter, follow these steps:

  1. Begin by flipping the speaker upside down with the magnet on the top.
  2. Hold the measuring tape or ruler in your hand and place it on the top of the speaker driver.
  3. Now, look down from the magnet’s top, attach one side of the tape over the edge where the speaker cone begins, and pull it across to the other side. That gives you the speaker’s cutout diameter.

The most common way to measure subwoofer size is the box method, in which you can measure the width and depth of the box. For example, a 16″ woofer might have a box that would be 16″ wide by 12″ deep. Alternatively, you can measure the speaker’s width and height.