2013 Subaru Legacy Speaker Sizes and Audio System Guide
2013 Subaru Legacy Speaker Sizes and Audio System Guide
This page covers the factory speaker locations, the stock speaker layout, and upgrade notes for the 2013 Subaru Legacy. Equipment can vary by trim, body style, and audio package, so the speaker count and amplifier setup are not the same across every version. Use the trim table below to compare what came in each configuration and to help plan an audio upgrade with the right fit and expectations.
Data verified by Nick Marchenko, PhD
Speaker Size Chart – 2013 Subaru Legacy
Use this table as the main reference. Fitment depends on trim, factory audio package, mounting depth, and adapter availability.
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 2013 Subaru Legacy
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
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Speaker Count by Trim – 2013 Subaru Legacy
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 |
|---|---|---|---|---|
| 2.5i Limited 4dr Sedan | 9 | 440W | – | – |
| 3.6R Limited 4dr Sedan | 9 | 440W | – | – |
| 2.5i Premium 4dr Sedan | 6 | 440W | – | – |
| 2.5i Sport 4dr Sedan | 6 | – | – | – |
| 2.5i 4dr Sedan | 4 | – | – | – |
| 3.6R 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.
Body Style Audio Differences
This 2013 Subaru Legacy uses the same core speaker layout across the available body styles, but equipment can vary by trim and audio package. Front and rear door 6.5-inch full-range speakers are listed, while factory amplifier details should be verified by trim. Selected audio systems may also include additional speakers if equipped.
What Speakers Fit the 2013 Subaru Legacy?
Aftermarket fitment should start with the factory speaker locations listed for this 2013 Subaru Legacy, 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. Factory amplifier details should be verified by trim and audio package, since equipment can vary. Selected audio systems may also include a subwoofer if equipped, so confirm the full audio layout before ordering.
Usually Safe Upgrades
- If your vehicle uses the front door 6.5-inch full-range location, a 6.5-inch aftermarket speaker is the most straightforward size to compare.
- If your vehicle uses the rear door 6.5-inch full-range location, a 6.5-inch aftermarket speaker is also the primary size to check.
- If your vehicle is one of the trims with a 9-speaker audio setup, verify speaker-level compatibility before choosing replacements.
- If your vehicle has a factory amplifier on your trim, make sure the new speakers match the system’s power and impedance needs.
Check Before Buying
- Confirm the speaker location first, since the front and rear door openings are both listed as 6.5-inch full-range positions.
- Measure mounting depth and compare the speaker frame to the factory opening before purchase.
- Check the connector style and whether an adapter or harness is needed for your specific trim.
- Verify whether your trim uses the 4-speaker, 6-speaker, or 9-speaker audio setup, because equipment can vary.
- If equipped, confirm whether any factory subwoofer or amplified audio package is part of the system before selecting upgrades.
Installation Notes
The 2013 Subaru Legacy uses 6.5-inch full-range speakers in the front and rear doors, and the factory audio layout can vary by trim. Some trims use a 4-speaker setup, while others may have 6 or 9 speakers, so it is important to verify the exact system before ordering parts. Installation usually starts with careful door panel removal, since clips and fasteners can be easy to damage if rushed. Check speaker depth and mounting clearance before choosing replacements, especially if you are upgrading to a larger magnet or deeper basket. Mounting adapters may be needed to match the factory opening, and a harness adapter can help keep the wiring clean and reversible. Factory amplifier details should be verified by trim and audio package, since some versions include amplified systems and others do not. If your vehicle has the factory subwoofer, plan the upgrade around that system as well. After installation, test each speaker for balance, polarity, and rattles before reinstalling all trim pieces.
Moderate difficulty, since trim variation, panel removal, and fitment checks can affect the install.
Common Mistakes When Replacing Speakers
Here are the most common mistakes to avoid when upgrading the 2013 Subaru Legacy audio system.
- Buying based only on the body-style label instead of checking actual speaker locations on the vehicle.
- Assuming every trim uses the same speaker count or amplifier setup; this model ranges from 4 to 9 speakers, and factory amplifier details should be verified by trim and audio package.
- Skipping measurement of mounting depth and speaker size before ordering parts, since the front and rear door speakers are listed as 6.5 inch full-range units but fitment can still vary by setup.
- Ignoring connector style and wiring differences, especially on trims with the 440W amplifier, which can affect adapter and harness selection.
- Ordering tweeters or a subwoofer without checking whether they are actually equipped, since those items are not listed for every vehicle and should only be addressed if equipped.
- Reassembling the doors before testing the new speakers and wiring, which can make it harder to catch polarity, fitment, or sound issues early.
Generation & Model Family
The 2013 Subaru Legacy belongs to the Fifth generation (BM) - Facelift (2013–2014) 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 2013 Subaru Legacy uses a straightforward speaker layout, but trim and audio package details can change the upgrade path. Some models include a factory amplifier, while speaker count and radio equipment can vary by trim. A smart plan starts with the front stage, then adds bass or power only after confirming the system you have.
| Goal | Best Upgrade Path | Why |
|---|---|---|
| Better clarity | Upgrade the front door speakers first, and add front tweeters if equipped or if your chosen setup supports them, to improve midrange detail and high-frequency clarity. | The front stage carries most of the vocals and detail, so it gives the biggest clarity improvement. This is the best place to start before moving to the rear speakers. |
| More bass | Add an aftermarket subwoofer to complement the factory speakers and give the system more low-end impact. | The listed factory speaker layout does not include a subwoofer, so adding one is the most effective way to increase bass without changing the rest of the system first. |
| Louder sound | Properly matched speakers and amplifier integration can improve volume and reduce distortion. Verify factory amp and premium system integration before adding aftermarket amplifiers. | Louder sound usually comes from improving speaker efficiency and giving the system clean power. Factory amplifier details should be verified by trim and audio package before planning an amp upgrade. |
| Budget improvement | Replace the front door speakers first with same-size replacement speakers and correct mounting brackets, then upgrade the rear speakers later if needed. | Front speakers do the most work in daily listening, so they deliver the best value for the money. This approach keeps costs down while still making the system sound noticeably better. |
| 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 interior looking original while still improving sound. It also helps avoid cutting factory wiring, which makes future changes easier. |
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 2013 Subaru Legacy?
The front door speakers are 6.5-inch full-range units. This applies to the model data provided for the 2013 Legacy.
What size are the rear door speakers in a 2013 Subaru Legacy?
The rear door speakers are 6.5-inch full-range units. The provided data lists the same size for the rear doors.
Does the 2013 Subaru Legacy have a factory subwoofer?
A factory subwoofer is not listed in the provided data. If equipped on a specific audio package, it should be verified by trim and equipment.
Do I need mounting adapters for speaker replacement?
Mounting adapters may be needed depending on the speaker you choose and the trim level. The factory speaker locations are 6.5-inch front and rear doors, so fitment should be checked before buying.
Can I replace the speakers without replacing the radio?
Yes, speaker replacement can be done without replacing the radio in many setups. The trim data shows different audio systems, so compatibility should be confirmed for your specific trim.
Does the 2013 Subaru Legacy have a factory amplifier?
Factory amplifier details should be verified by trim and audio package. The data shows a 440W amplifier on some trims, while others are listed with N/A.