2018 Nissan Sentra SV: Speaker Replacement Guide

So, you're looking to upgrade or replace the speakers in your 2018 Nissan Sentra SV, huh? Awesome! Whether your factory speakers are blown, or you're just craving a richer, more immersive audio experience, this guide will walk you through the process. We'll cover everything from choosing the right speakers to the actual installation, making sure you get the best sound possible in your ride. Let's dive in, and get ready to crank up the tunes in your Sentra!

Choosing the Right Speakers for Your 2018 Sentra SV

Selecting the right speakers is crucial for achieving the sound quality you desire. Before you even think about tools or installation, you need to figure out what kind of speakers will work best for your 2018 Nissan Sentra SV. This involves considering size, type, and power handling.

Speaker Size and Location

The 2018 Sentra SV typically uses 6.5-inch speakers in the front doors and 6.5-inch or 6x9-inch speakers in the rear deck or doors, depending on the specific configuration. It's always a good idea to double-check your owner's manual or measure the existing speakers to confirm the correct size. Using Crutchfield's vehicle fit guide is also a great way to determine what fits. Don't just assume! Getting the size wrong can lead to fitment issues and a whole lot of frustration. Remember, some aftermarket speakers might require adapter brackets for a perfect fit, especially if the mounting holes don't align with the factory locations. These brackets are usually inexpensive and readily available online.

Speaker Types: Component vs. Coaxial

Now, let's talk speaker types. You've got two main options: coaxial (or full-range) and component speakers. Coaxial speakers are an all-in-one solution, with the tweeter (the part that handles high frequencies) mounted in the center of the woofer (the part that handles low and mid frequencies). They're generally easier to install and more affordable, making them a popular choice for simple upgrades. On the other hand, component speakers separate the tweeter and woofer, allowing for more precise placement and superior soundstaging. This means you can position the tweeter for optimal imaging, creating a more realistic and immersive listening experience. While component systems offer better sound, they also require more complex installation, often involving running new wires and mounting the tweeters separately. For many people a good set of coaxial speakers is more than adequate and provides a great sound upgrade without the extra hassle. Consider your budget, skill level, and desired sound quality when making this decision.

Power Handling and Sensitivity

Power handling, measured in watts RMS (Root Mean Square), indicates how much power a speaker can handle continuously. Make sure the speakers you choose are compatible with your car's amplifier or head unit. If you're using the factory head unit, look for speakers with lower RMS ratings, as the factory amp typically doesn't provide a lot of power. If you plan to add an aftermarket amplifier, you can choose speakers with higher RMS ratings to take full advantage of the extra power. Sensitivity, measured in decibels (dB), indicates how efficiently a speaker converts power into sound. Speakers with higher sensitivity ratings will produce more sound with less power, which is especially important if you're using the factory head unit. A sensitivity rating of 90 dB or higher is generally considered good.

Tools and Materials You'll Need

Alright, so you've picked out your new speakers. Fantastic! Now, let's gather the tools and materials you'll need for the installation. Having everything on hand before you start will make the process smoother and less stressful. Trust me, you don't want to be halfway through the installation and realize you're missing a crucial tool.

• Panel Removal Tools: These are essential for safely removing door panels and trim pieces without damaging them. Plastic pry tools are much better than screwdrivers, which can easily scratch or break the plastic.
• Screwdrivers: You'll need a variety of screwdrivers, both Phillips head and flathead, to remove screws holding the speakers and door panels in place.
• Socket Set: A socket set with various sizes will be helpful for removing bolts and nuts.
• Wire Strippers/Crimpers: These are necessary for connecting the new speakers to the existing wiring. Make sure you get a good quality set that can strip and crimp wires cleanly.
• Wire Connectors: You can use crimp connectors, butt connectors, or even solder the wires together. Crimp connectors are the easiest and most common option.
• Electrical Tape: Use electrical tape to insulate any exposed wires and prevent shorts.
• Speaker Wire: You might need extra speaker wire if the factory wiring is too short or damaged.
• Adapter Brackets: As mentioned earlier, you might need adapter brackets to ensure the new speakers fit properly in the factory locations.
• Multimeter (Optional): A multimeter can be helpful for testing the polarity of the speaker wires.

Step-by-Step Installation Guide

Okay, let's get down to business! Here's a step-by-step guide to replacing the speakers in your 2018 Nissan Sentra SV. Remember to take your time and be careful not to damage any of the car's components. If you're not comfortable with any of these steps, it's always best to consult a professional installer.

1. Disconnect the Battery

Safety first! Before you start any electrical work on your car, disconnect the negative terminal of the battery. This will prevent any accidental shorts or electrical shocks.

2. Remove the Door Panel

This is where those panel removal tools come in handy. Start by removing any screws that are holding the door panel in place. These are usually located around the edges of the panel and behind the door handle or armrest. Once you've removed all the screws, use the panel removal tools to gently pry the door panel away from the door. Start at the bottom corner and work your way around the edges. Be careful not to pull too hard, as you could damage the clips that hold the panel in place. Once the panel is loose, lift it up and off the door frame. You may need to disconnect any electrical connectors that are attached to the door panel, such as the power window switch or door lock switch.

3. Remove the Old Speaker

With the door panel removed, you should now have access to the factory speaker. Remove the screws that are holding the speaker in place. Disconnect the speaker wires from the speaker terminals. If the speaker wires are connected with clips, you can usually squeeze the clips to release them. If the speaker wires are soldered to the speaker terminals, you'll need to use a soldering iron to desolder them. Once the speaker is disconnected, carefully remove it from the door.

4. Connect the New Speaker

Connect the new speaker to the existing speaker wires. You can use crimp connectors, butt connectors, or solder the wires together. Make sure you connect the wires with the correct polarity. The positive wire is usually marked with a red stripe or a (+) symbol. The negative wire is usually black or marked with a (-) symbol. If you're not sure which wire is which, you can use a multimeter to test the polarity. Once the speaker is connected, mount it in the factory location using the screws you removed earlier. If you're using adapter brackets, make sure they're properly installed before mounting the speaker.

5. Reinstall the Door Panel

Reconnect any electrical connectors that you disconnected earlier. Align the door panel with the door frame and press it firmly into place. Make sure all the clips are properly seated. Reinstall the screws that you removed earlier. Test the power windows, door locks, and speakers to make sure everything is working properly.

6. Repeat for the Other Speakers

Repeat these steps for the other speakers in your car. If you're replacing the rear speakers, you may need to remove the rear deck or rear side panels to access them.

7. Reconnect the Battery

Once you've replaced all the speakers, reconnect the negative terminal of the battery.

Testing and Troubleshooting

Alright, time to test your handiwork! Turn on your car and test the new speakers. Make sure they're producing sound and that the sound quality is to your liking. If you're not getting any sound from a speaker, double-check the wiring connections. Make sure the wires are properly connected and that there are no loose connections. If the sound is distorted or weak, check the polarity of the speaker wires. Make sure the positive and negative wires are connected correctly. If you're still having problems, consult a professional installer.

Upgrading Your Audio System Further

Replacing your speakers is a great first step, but there are other ways to enhance your car's audio system. Consider adding an aftermarket amplifier to provide more power to your speakers. This will result in louder, clearer sound. You can also add a subwoofer to enhance the bass response. A subwoofer will add depth and richness to your music. You might also consider upgrading your head unit to a newer model with more features, such as Bluetooth connectivity, a touchscreen display, and advanced audio processing capabilities.

Final Thoughts

Replacing the speakers in your 2018 Nissan Sentra SV is a relatively straightforward project that can significantly improve your listening experience. By following these steps and taking your time, you can achieve professional-quality results without breaking the bank. So, crank up the tunes and enjoy your new and improved sound system! Just remember to always prioritize safety and consult a professional if you're unsure about any part of the installation process. Happy listening!