2008 Subaru Impreza Speaker Sizes and Audio System Guide
2008 Subaru Impreza Speaker Sizes and Audio System Guide
This page covers the factory speaker layout for the 2008 Subaru Impreza, including where the speakers are located and what size each position uses. It also highlights upgrade notes so you can compare your vehicle before ordering parts. Equipment can vary by trim, body style, or audio package, and factory amplifier details should be verified by trim and audio package.
Data verified by Nick Marchenko, PhD
Speaker Size Chart – 2008 Subaru Impreza
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 2008 Subaru Impreza
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 – 2008 Subaru Impreza
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 4dr All-wheel Drive Hatchback | 4 | opt | – | – |
| 2.5i 4dr All-wheel Drive Sedan | 4 | opt | – | – |
| WRX w/VDC 4dr All-wheel Drive Hatchback | 4 | opt | – | – |
| WRX w/VDC 4dr All-wheel Drive Sedan | 4 | opt | – | – |
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 2008 Subaru Impreza uses the same core speaker layout across the available body styles in the database, with 6.5-inch full-range speakers in the front and rear doors. Because body-style-specific audio data is not listed, equipment can vary by trim and audio package, and factory amplifier details should be verified before planning upgrades.
What Speakers Fit the 2008 Subaru Impreza?
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 factory-amplified audio system. This 2008 Subaru Impreza uses 6.5-inch full-range speakers in the front and rear doors, so replacement choices should be matched to the original opening and wiring. Factory amplifier details should be verified by trim and audio package, since equipment can vary.
Usually Safe Upgrades
- If your vehicle uses the front door location, a 6.5-inch full-range replacement speaker is the starting point for fitment.
- If your vehicle uses the rear door location, a 6.5-inch full-range replacement speaker is the starting point for fitment.
- If your vehicle has a factory-amplified audio system, choose speakers that work well with that setup and verify compatibility before ordering.
- If equipped, any factory tweeters or subwoofer-related audio pieces should be checked separately, since they are not listed as standard here.
Check Before Buying
- Confirm the speaker location and size against the factory opening before purchasing.
- Measure mounting depth and check for any bracket or adapter needs, since size alone does not guarantee fitment.
- Verify the connector style so the new speaker can be wired correctly.
- Check trim and audio package details if the vehicle has factory amplification, because equipment can vary.
Installation Notes
The 2008 Subaru Impreza uses 6.5 inch full-range speakers in the front and rear doors, and the factory speaker count is listed as 4. Factory amplifier details should be verified by trim and audio package, since amplifier availability can vary. Before starting, remove the door panels carefully and keep track of clips and fasteners so the trim goes back together cleanly. Check speaker depth and mounting depth before ordering new speakers, because door clearance can be limited. Mounting adapters may be needed to secure aftermarket speakers in the factory openings, and a harness adapter can help avoid cutting the vehicle wiring. If your vehicle has the factory subwoofer, plan the upgrade around that system separately. After installation, test each speaker for balance, polarity, and proper operation before reinstalling all panels.
Moderate difficulty, since door panel removal, wiring care, and fitment checks are important.
Common Mistakes When Replacing Speakers
When shopping for a 2008 Subaru Impreza audio upgrade, the biggest problems usually come from assuming every trim and audio package is wired the same way.
- Buying based only on the body-style label instead of checking actual speaker locations on the vehicle.
- Skipping trim and audio package checks, even though speaker count, radio, navigation, and amplifier details can vary by trim.
- Assuming the factory amplifier setup is the same on every vehicle instead of verifying whether the car has the optional factory amp on that trim.
- Choosing speakers without confirming mounting depth and connector style, which can cause fitment or wiring issues during installation.
- Ignoring the fact that the factory speaker layout is listed as front and rear 6.5-inch full-range speakers, which should guide replacement choices.
- Reassembling the door panels before testing the new speakers and radio function, which can hide wiring or polarity problems until later.
Generation & Model Family
The 2008 Subaru Impreza belongs to the Third generation (GE/GV) (2008–2011) 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 2008 Subaru Impreza uses a simple factory speaker layout, and equipment can vary by trim and audio package. That makes it a good candidate for targeted upgrades, especially if you want cleaner sound, more output, or a more refined daily-driver setup. Start with the areas that affect listening most, then build from there based on your budget and goals.
| Goal | Best Upgrade Path | Why |
|---|---|---|
| Better clarity | Upgrade the front door speakers first, then add front-stage tweeters if equipped or if your chosen audio package supports them. Focus on speakers with cleaner midrange response and better high-frequency detail. | Most of the sound you hear comes from the front stage, so improving those speakers has the biggest effect on clarity. Front-focused upgrades usually make vocals, instruments, and detail easier to hear without changing the whole system at once. |
| More bass | Add an aftermarket subwoofer to complement the factory speakers and take the low-frequency load off the door speakers. If a factory subwoofer is present on your trim, verify how it is integrated before planning the upgrade. | A dedicated subwoofer is the most effective way to add real low-end impact. It lets the main speakers handle mids and highs more cleanly while giving you the bass response the factory system usually lacks. |
| Louder sound | Properly matched speakers and amplifier integration can improve volume and reduce distortion. Before adding aftermarket amplifiers, verify factory amp or premium-system integration by trim and audio package. | Higher output only helps if the system is matched correctly. Good speaker sensitivity, clean power delivery, and the right integration approach can raise volume while keeping the sound controlled at higher listening levels. |
| Budget improvement | Replace the front door speakers first with same-size replacement speakers with correct mounting brackets, then upgrade the rear doors later if needed. | The front doors carry the most important part of the music for the driver and passengers. Starting there gives the best improvement per dollar and lets you spread the rest of the upgrade over time. |
| 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 quality. It also helps avoid cutting factory wiring, which makes the install neater and easier to service later. |
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 2008 Subaru Impreza?
The front door speakers are 6.5-inch full-range units. This applies to the model data provided for the 2008 Impreza.
What size are the rear door speakers in a 2008 Subaru Impreza?
The rear door speakers are also 6.5-inch full-range units. Speaker data for this model year shows the same size in the rear doors.
Does the 2008 Subaru Impreza have a factory subwoofer?
A factory subwoofer is not listed in the provided data. If your vehicle has one, it would depend on the audio package or trim.
Do I need mounting adapters to replace the speakers?
Mounting adapters may be needed depending on the speaker you choose and the vehicle’s factory openings. Check the speaker depth, mounting pattern, and trim details before buying.
Can I replace the speakers without replacing the radio?
Yes, speaker replacement can be done while keeping the factory radio. The result will depend on the speaker choice and the rest of the audio system.
Does the 2008 Subaru Impreza have a factory amplifier?
Factory amplifier details should be verified by trim and audio package. The provided data says an amplifier is present on some trims, but it is not universal.