2015 Subaru Forester Speaker Sizes and Audio System Guide
2015 Subaru Forester Speaker Sizes and Audio System Guide
This page covers the 2015 Subaru Forester’s factory speaker locations, common speaker sizes, and key upgrade notes so you can plan a replacement with fewer surprises. Equipment can vary by trim, body style, or audio package, and factory amplifier details should be verified by trim and audio package. Selected audio systems may also include additional equipment, so checking the exact configuration is the safest way to confirm what is installed.
Data verified by Nick Marchenko, PhD
Speaker Size Chart – 2015 Subaru Forester
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 2015 Subaru Forester
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 – 2015 Subaru Forester
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 |
|---|---|---|---|---|
| 2.0XT Touring 4dr All-wheel Drive | 8 | 440W Harman-Kardon | – | – |
| 2.5i Touring 4dr All-wheel Drive | 8 | 440W Harman-Kardon | – | – |
| 2.0XT Premium 4dr All-wheel Drive | 6 | – | – | – |
| 2.5i Limited 4dr All-wheel Drive | 6 | 440W Harman-Kardon | – | – |
| 2.5i Premium 4dr All-wheel Drive | 6 | – | – | – |
| 2.5i 4dr All-wheel Drive | 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.
Crossover vs SUV – Audio Differences
For the 2015 Subaru Forester, body-style-specific speaker data is not listed, so audio details should be checked by trim and factory package. Different body styles of this model may affect rear speaker placement or available audio equipment, and factory amplifier details should be verified by trim and audio package.
What Speakers Fit the 2015 Subaru Forester?
Aftermarket fitment should start with the factory speaker locations listed above, 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. For the 2015 Subaru Forester, the listed factory locations are 6.5-inch full-range speakers in the front and rear doors, so replacement choices should be matched to those openings rather than the vehicle name alone. Factory amplifier details should be verified by trim and audio package.
Usually Safe Upgrades
- If your vehicle uses the front door location, a 6.5-inch full-range replacement is the starting point for fitment.
- If your vehicle uses the rear door location, a 6.5-inch full-range replacement is the starting point for fitment.
- If equipped with a factory-amplified audio system, speaker choice should be matched to the trim’s audio setup and power handling needs.
- If equipped with tweeters or a factory subwoofer, those components should be checked separately because they are not listed as standard across the model.
Check Before Buying
- Confirm the exact speaker location before ordering, since the factory data lists different trim audio packages with 4 to 8 speakers.
- Measure mounting depth and verify bracket and connector compatibility before choosing a replacement.
- Check whether the vehicle has the 440W Harman-Kardon system or a non-amplified setup, because trim audio equipment can vary.
- If you are replacing only the door speakers, make sure the new speakers are sized for the 6.5-inch openings and will work with the rest of the system.
Installation Notes
For the 2015 Subaru Forester, speaker replacement starts with careful panel removal at the front or rear doors, since the factory locations are 6.5-inch full-range speakers. Speaker count can vary by trim, so check the vehicle’s audio package before ordering parts. Some trims use a factory amplifier, including certain Harman-Kardon systems, while others do not, so wiring should be verified before installation. Use the correct harness adapters to avoid cutting factory wiring, and confirm polarity before reconnecting everything. Speaker depth should also be checked closely, especially if you are upgrading to a larger aftermarket driver or a speaker with a deeper magnet. 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 the existing audio layout and confirm compatibility before final assembly. After installation, test balance, fade, and overall output before reinstalling all trim panels.
Moderate difficulty, because trim removal, wiring verification, and speaker fitment details should all be checked before installation.
Common Mistakes When Replacing Speakers
The 2015 Subaru Forester can vary a lot by trim and audio package, so the biggest install mistakes usually come from assuming every vehicle is the same.
- Buying based only on the body-style label instead of checking actual speaker locations on the vehicle.
- Skipping trim and audio package verification, which can change the speaker count and whether a factory amplifier is present on some trims.
- Choosing replacement speakers without confirming mounting depth and connector style, which can lead to fitment problems even when the size matches.
- Assuming tweeters or a factory subwoofer are included when they are not listed for this model; if equipped, those pieces should be identified before ordering parts.
- Not checking the factory amplifier setup on trims that use the 440W Harman-Kardon system, since the audio path can affect speaker selection and wiring needs.
- Reassembling the door panels before testing the new speakers and connections, which can hide wiring or polarity issues until the job is already closed up.
Generation & Model Family
The 2015 Subaru Forester belongs to the Fourth generation (SH) (2014–2016) 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 2015 Subaru Forester uses a simple front and rear door speaker layout, and equipment can vary by trim and audio package. Some trims include a factory amplifier, while others use a more basic setup, so it is worth confirming your exact system before buying parts. The best upgrade path depends on whether you want clearer sound, more bass, higher volume, or a clean factory-style result.
| Goal | Best Upgrade Path | Why |
|---|---|---|
| Better clarity | Start with the front door speakers and add front-stage tweeters if equipped or if your chosen upgrade path includes them. Focus on cleaner mids and highs before moving to the rear speakers. | The front stage has the biggest impact on detail and imaging, so improving it first usually gives the most noticeable clarity gain. |
| More bass | Add an aftermarket subwoofer to complement the factory speakers and keep the low end separate from the door speakers. If your trim has a factory bass-focused system, verify how it is integrated before adding new bass equipment. | A dedicated subwoofer handles low frequencies better than door speakers, which helps the system sound fuller without forcing the main speakers to work too hard. |
| Louder sound | Properly matched speakers and amplifier integration can improve volume and reduce distortion. Verify factory amp or premium system integration before adding aftermarket amplifiers, especially on trims with the 440W Harman-Kardon setup. | Higher output only helps when the speakers and amplification are matched correctly, and system integration matters more on trims with upgraded audio equipment. |
| Budget improvement | Replace the front door speakers first with same-size replacement speakers with correct mounting brackets. This gives the best value because the front speakers do most of the work in everyday listening. | A front-speaker-first upgrade usually delivers the biggest improvement for the money without needing a full system overhaul. |
| 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 quality and making future service 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 the 2015 Subaru Forester?
The front door speakers are 6.5-inch full-range units. Speaker layouts can vary by trim, so it is still smart to confirm your exact audio package before buying replacements.
What size are the rear door speakers in the 2015 Subaru Forester?
The rear door speakers are 6.5-inch full-range units. This model uses direct speaker data for 2015, but trim and audio package differences can still affect the final setup.
Does the 2015 Subaru Forester have a factory subwoofer?
A factory subwoofer is not listed for this model. If equipped on a specific audio package, it should be verified by trim before planning upgrades.
Do I need mounting adapters for speaker replacement?
Mounting adapters may be needed depending on the speaker brand and the trim’s audio setup. Check the vehicle’s speaker location and mounting depth before ordering parts.
Can I replace the speakers without replacing the radio?
Yes, speaker upgrades can be done without changing the radio in many cases. The best match depends on the trim, speaker count, and whether the vehicle has an upgraded audio system.
Does the 2015 Subaru Forester have a factory amplifier?
Factory amplifier details should be verified by trim and audio package. Some trims list a 440W Harman-Kardon amplifier, while others do not.