2014 Nissan Altima Speaker Sizes and Audio System Guide
2014 Nissan Altima Speaker Sizes and Audio System Guide
This page covers the factory speaker layout, common upgrade notes, and the equipment differences that matter for a 2014 Nissan Altima. Speaker and audio equipment can vary by trim, body style, and audio package, so the exact setup should be verified before choosing replacements. Factory amplifier details should also be checked by trim and audio package, and selected audio systems may include tweeters or other extra channels if equipped.
Data verified by Nick Marchenko, PhD
Speaker Size Chart – 2014 Nissan Altima
Use this table as the main reference. Fitment depends on trim, factory audio package, mounting depth, and adapter availability.
| Location | Type | Factory Size | Note |
|---|---|---|---|
| Rear Deck Corner | Full-Range | 6 x 9 inch | |
| Front Door | Full-Range | 6.5 inch | |
| Dash Corner | Tweeter | 3.5 inch | if equipped |
| Dash Corner | Center Channel | 3.5 inch | if equipped |
| Rear Door | Full-Range | 6.5 inch |
Generic speaker location diagram. The table above shows the specific factory sizes for this vehicle. Exact location details may vary by body style and trim.
Recommended Speakers for the 2014 Nissan Altima
Selected aftermarket speakers that match the factory sizes for this vehicle. Always verify mounting depth, connector type, and audio package before ordering.
6.5" Speakers
3.5" Speakers
Disclosure: Product links are affiliate links. We may earn a commission at no extra cost to you.
Speaker Count by Trim – 2014 Nissan Altima
Speaker count and audio equipment vary by trim and factory audio package. This table lists known configurations from our database.
| Trim | Speakers | Amplifier | Radio | Navigation |
|---|---|---|---|---|
| 2.5 SL 4dr Sedan | 9 | std | – | – |
| 3.5 SL 4dr Sedan | 9 | std | – | – |
| 2.5 S 4dr Sedan | 6 | – | – | – |
| 2.5 SV 4dr Sedan | 6 | – | – | – |
| 3.5 S 4dr Sedan | 6 | – | – | – |
| 3.5 SV 4dr Sedan | 6 | – | – | – |
| 2.5 4dr Sedan | 4 | – | – | – |
Data sourced from manufacturer specifications. Verify with the window sticker or dealer before ordering audio components.
Vehicle and Audio System Specifications
This block helps identify the vehicle and its audio system configuration for fitment decisions.
Coupe vs Sedan – Audio Differences
This model is offered in more than one body style, and equipment can vary by configuration. Since no body-style-specific speaker data is listed, rear speaker placement and factory audio packages should be verified for the exact vehicle. Speaker count ranges from 4 to 9, and selected audio systems may also include tweeters or a center channel if equipped.
What Speakers Fit the 2014 Nissan Altima?
Aftermarket fitment should start with the factory speaker locations listed for this 2014 Nissan Altima, but diameter alone is not enough. Check mounting depth, bracket fit, connector type, and whether the vehicle has a premium or factory-amplified audio system. The listed speaker sizes cover the common locations, while some audio packages may add dash speakers or a center channel if equipped. Factory amplifier details should be verified by trim and audio package before ordering.
Usually Safe Upgrades
- If your vehicle uses the front door location, 6.5-inch full-range speakers are the common factory size to match.
- If your vehicle uses the rear door location, 6.5-inch full-range speakers are the common factory size to match.
- If your vehicle uses the rear deck corner location, 6 x 9-inch full-range speakers are the common factory size to match.
- If your vehicle has dash corner tweeters if equipped, 3.5-inch tweeters may be part of the audio setup.
- If your vehicle has a dash corner center channel if equipped, 3.5-inch speakers may be used in that location.
Check Before Buying
- Confirm whether your Altima is using the 4-speaker, 6-speaker, or 9-speaker audio setup, since speaker count varies by trim.
- Verify mounting depth and the shape of the factory speaker opening before choosing replacements.
- Check the connector style at each location so you know whether an adapter may be needed.
- Confirm whether the vehicle has a factory amplifier on your trim, since audio package details can change the speaker setup.
- Use the exact location on the vehicle, because dash corner equipment can vary with the audio system.
Installation Notes
The 2014 Nissan Altima uses different speaker layouts depending on trim, so confirm your exact audio package before ordering parts. Front door speakers are 6.5 inch, rear door speakers are 6.5 inch, and rear deck corner speakers are 6 x 9 inch. Dash corner tweeters and a dash corner center channel may also be present if equipped. Factory amplifier details should be verified by trim and audio package, since speaker count can range from 4 to 9. Installation usually starts with careful panel removal, then checking factory wiring before disconnecting anything. Use a harness adapter where needed to help keep the factory wiring intact, and verify polarity during hookup. Speaker depth matters in the doors and rear deck, so compare the new speaker’s mounting depth with the available space before final assembly. Mounting adapters may be needed to match the factory openings and secure the new speakers properly. If your vehicle has the factory subwoofer, plan the upgrade around that enclosure and confirm compatibility before installation. Always test each speaker before reinstalling the panels.
Moderate, because trim-specific audio equipment and speaker depth can change the installation process.
Common Mistakes When Replacing Speakers
The most common errors on a 2014 Nissan Altima come from assuming every trim uses the same audio layout, which can lead to the wrong parts and extra rework.
- Buying based only on the body-style label instead of checking actual speaker locations on the vehicle.
- Skipping trim and audio package verification, even though speaker count and amplifier setup can vary from 4 to 9 speakers and factory amplifier details should be confirmed by trim.
- Choosing replacement speakers without checking mounting depth and available clearance behind the door, dash, or rear deck openings.
- Ignoring connector style and wiring differences, which can leave you with adapters, splicing, or parts that do not match the factory harness.
- Assuming tweeters or a center channel are present on every vehicle; those dash speakers are only relevant if equipped.
- Reassembling the panels before testing each speaker and channel, which can hide wiring or polarity issues until everything is back together.
Generation & Model Family
The 2014 Nissan Altima belongs to the Fifth generation (L33) (2013–2015) family. Nearby model years often share similar speaker locations and audio layouts, but exact fitment can vary by trim and audio package – verify before ordering.
Recommended Upgrade Path
The 2014 Nissan Altima uses different audio setups depending on trim, so equipment can vary. Some models include more speakers and factory amplification, while others are simpler. A smart upgrade plan starts with the front stage, then moves to bass, volume, and appearance based on your goals and the factory audio package.
| Goal | Best Upgrade Path | Why |
|---|---|---|
| Better clarity | Upgrade the front door speakers first, then add tweeters if equipped or refresh the dash corner high-frequency speakers on models that have them. A stronger front stage usually gives the biggest improvement in vocals, detail, and stereo imaging. | Clarity comes from the front of the cabin, where most music detail is heard. Since tweeters are listed for some audio setups, improving the front stage can clean up highs and mids without changing the whole system at once. |
| More bass | Add an aftermarket subwoofer to complement the factory speakers and fill in the low end. If your trim has a factory bass-focused audio package, verify how it is integrated before choosing your sub and amplifier setup. | The listed speaker layout does not show a factory subwoofer as standard across the model, so adding a dedicated subwoofer is the most effective way to increase low-frequency output. |
| Louder sound | Use properly matched speakers and amplifier integration to improve volume and reduce distortion. Before adding aftermarket amplification, verify factory amp and premium system integration by trim and audio package. | Higher output only helps when the system is matched correctly. The Altima has trim-dependent audio equipment, so checking the factory setup first helps avoid integration problems and keeps the system sounding clean at higher volume. |
| Budget improvement | Replace the front door speakers first with same-size replacement speakers and the correct mounting brackets. This gives the best value because the front speakers handle the most important part of the listening experience. | A budget-friendly upgrade should focus on the speakers you hear most often. Starting with the front doors gives a noticeable improvement without requiring a full system rebuild. |
| Factory look | Use same-size replacement speakers with the correct mounting brackets and harness adapters for a clean install that preserves the factory wiring and appearance. | This approach keeps the cabin looking original while still improving sound. It also helps maintain a neat installation and reduces the chance of wiring changes that affect the factory appearance. |
Mounting Adapters and Wiring
The same nominal diameter does not guarantee a direct mount. Before ordering, confirm:
- Speaker depth: Aftermarket speakers often have larger magnets – measure available depth at each location.
- Mounting brackets: Door locations typically need a bracket or spacer to clear the window regulator and achieve correct mounting depth.
- Wiring harness adapters: Use a plug-and-play harness adapter to preserve factory wiring.
- Tweeter mounting cups: Replacing OEM tweeters may require surface-mount cups or brackets depending on the location.
- Factory or premium amplified systems: If the vehicle has a premium or factory-amplified audio system, confirm how the factory radio, amplifier, and speakers are connected before adding aftermarket amplifiers. Depending on the setup, a line output converter, DSP, integration harness, or professional installation may be needed.
- Connector type: Factory connectors vary by trim and model year – confirm compatibility before splicing or using an adapter.
Frequently Asked Questions
What size are the front door speakers in a 2014 Nissan Altima?
The front door speakers are 6.5-inch full-range units. Some audio systems may also include dash corner tweeters if equipped, so it helps to confirm the trim and audio package before ordering parts.
What size are the rear speakers in a 2014 Nissan Altima?
The rear speaker size listed for this model is 6 x 9 inch full-range in the rear deck corner. Rear door full-range speakers are also listed at 6.5 inch, so the exact layout can vary by audio setup.
Does the 2014 Nissan Altima have a factory subwoofer?
A factory subwoofer is not listed in the provided data. If your car has one as part of a specific audio package, it should be verified by trim and equipment before choosing replacement parts.
Do I need mounting adapters to replace the speakers?
Mounting adapters may be needed depending on the speaker location and the replacement speaker you choose. The factory sizes are listed, but fitment details can still vary, so it is best to confirm the opening and mounting depth first.
Can I replace the speakers without replacing the radio?
Yes, speaker replacement can be done without replacing the radio. The factory radio can stay in place, but the final result depends on the trim, speaker count, and whether the car has an amplified audio system.
How do I know if my 2014 Altima has a factory amplifier?
Factory amplifier details should be verified by trim and audio package. The provided data shows it is present on some trims, while others are listed differently, so checking your exact equipment is the safest approach.