2017 Toyota Avalon Speaker Sizes and Audio System Guide
2017 Toyota Avalon Speaker Sizes and Audio System Guide
This page covers the factory speaker layout, common upgrade notes, and trim-level audio differences for the 2017 Toyota Avalon. Equipment can vary by trim, body style, or audio package, so speaker counts and amplifier details should be checked against the exact vehicle. Some models may also include optional center-channel equipment, while other audio features are only found on selected systems.
Data verified by Nick Marchenko, PhD
Speaker Size Chart – 2017 Toyota Avalon
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 | Mid-Range | 3.5 inch | |
| Rear Deck Corner | Full-Range | 6 x 9 inch | |
| Front Door | Full-Range | 6 x 9 inch | |
| Dash Corner | Mid-Range | 3.5 inch | |
| Rear Door | Mid-Range | 3.5 inch | |
| Center Dash | Center Channel | 3.5 inch | if equipped |
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 2017 Toyota Avalon
Selected aftermarket speakers that match the factory sizes for this vehicle. Always verify mounting depth, connector type, and audio package before ordering.
3.5" Speakers
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Speaker Count by Trim – 2017 Toyota Avalon
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 |
|---|---|---|---|---|
| Limited 4dr Sedan | 11 | JBL GreenEdge | SiriusXM AM/FM/HD/Satellite, seek-scan | ✓ |
| Touring 4dr Sedan | 9 | std | SiriusXM AM/FM/HD/Satellite, seek-scan | ✓ |
| XLE Premium 4dr Sedan | 9 | opt | SiriusXM AM/FM/HD/Satellite, seek-scan | ✓ |
| XLE 4dr Sedan | 8 | – | SiriusXM AM/FM/HD/Satellite, seek-scan | – |
| XLE Plus 4dr Sedan | 8 | – | SiriusXM AM/FM/HD/Satellite, seek-scan | – |
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.
Luxury vs Sedan – Audio Differences
This model is offered in more than one body style, and equipment can vary by configuration. Since body-style-specific speaker data is not listed, rear speaker placement and factory audio packages should be verified by trim and audio option. Speaker count ranges from 8 to 11, depending on the system.
What Speakers Fit the 2017 Toyota Avalon?
Aftermarket fitment should start with the factory speaker locations listed for the 2017 Toyota Avalon, 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. The center dash 3.5-inch speaker is listed only if equipped, and no factory tweeters are listed in the provided data.
Usually Safe Upgrades
- If your vehicle uses the Front Door location, a 6 x 9 inch full-range speaker is the factory size to match.
- If your vehicle uses the Rear Deck Corner full-range location, a 6 x 9 inch speaker is the factory size to match.
- If your vehicle uses the Dash Corner or Rear Door locations, a 3.5 inch mid-range speaker matches the factory opening.
- If your vehicle uses the Rear Deck Corner mid-range location, a 3.5 inch speaker matches the factory opening.
- If your vehicle uses the Center Dash location, a 3.5 inch center-channel speaker may apply when equipped.
Check Before Buying
- Confirm the exact trim and audio package, since speaker count and amplifier setup can vary from 8 to 11 speakers.
- Measure mounting depth and compare the speaker frame shape before ordering.
- Verify connector style and whether an adapter or harness is needed for your specific trim.
- Check whether the vehicle uses the optional center dash speaker before selecting a replacement for that location.
Installation Notes
The 2017 Toyota Avalon uses a mixed speaker layout, so installation should start with a careful check of the exact trim and audio package. Front door and rear deck locations use 6 x 9 inch speakers, while dash corner and rear door locations use 3.5 inch speakers. The center dash speaker is only present if equipped. Factory amplifier details should be verified by trim and audio package, since the system can range from 8 to 11 speakers. Panel removal is required at the doors, dash, and rear deck, so work slowly to avoid breaking clips or damaging trim. Before ordering parts, confirm speaker depth and mounting depth at each location, especially in the front doors and rear deck. Mounting adapters may be needed to match the factory openings, and harness adapters help keep wiring clean and reversible. If your vehicle has the factory subwoofer, plan for additional integration checks before final assembly. Always test each speaker location before reinstalling panels to confirm polarity, balance, and clear sound.
This is a moderate installation that can become more involved if the vehicle has the upgraded audio package or factory amplifier.
Common Mistakes When Replacing Speakers
When shopping for a 2017 Toyota Avalon audio upgrade, the biggest problems usually come from assuming every trim is wired the same and skipping basic fitment checks.
- Buying based only on the body-style label instead of checking actual speaker locations on the vehicle. The speaker layout is defined by the vehicle data, and equipment can vary by trim and audio package, so verify the exact locations before ordering parts.
- Ignoring trim and audio package differences. This Avalon can have 8 to 11 speakers depending on trim, and the amplifier setup is not universal, so confirm the trim table before choosing replacement speakers or an upgrade path.
- Skipping mounting depth and size checks. The listed locations include 3.5 inch and 6 x 9 inch speakers, and the physical depth behind each opening still needs to be measured so the new speaker clears the factory space.
- Assuming the connectors will match without checking. Even when the speaker size looks right, the plug style and wiring can differ by trim or audio system, so compare the factory connector before installation.
- Forgetting to test the system before putting everything back together. Power up the audio system first, confirm every speaker plays correctly, and then reassemble the panels once you know the wiring and balance are right.
- Treating optional equipment as standard. The center dash speaker is only listed if equipped, and selected audio systems may also include different components, so verify the actual vehicle before planning the upgrade.
Generation & Model Family
The 2017 Toyota Avalon belongs to the Fourth generation (XX40) - Facelift (2016–2018) 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 2017 Toyota Avalon uses an 8–11 speaker setup depending on trim, so the best upgrade path depends on your factory audio package. Front-stage changes usually deliver the biggest improvement first, while higher trims may already include factory amplification. Factory amplifier details should be verified by trim and audio package before planning any larger system changes.
| Goal | Best Upgrade Path | Why |
|---|---|---|
| Better clarity | Start with the front door speakers and dash corner speakers, then upgrade the front stage if equipped with the center dash speaker. If your trim includes a factory amplifier, verify integration before choosing aftermarket speakers. | Clarity improvements usually come from the front of the cabin, where most vocals and detail are heard. A stronger front stage helps clean up mids and highs without changing the whole system at once. |
| More bass | Add an aftermarket subwoofer to complement the factory speakers and keep the low end separate from the main speaker set. If your trim has a factory amplifier, confirm how it handles bass output before adding new low-frequency gear. | The factory speaker layout does not list a subwoofer, so adding one is the most effective way to increase low-end impact. This gives you more bass without asking the door speakers to do extra work. |
| Louder sound | Use properly matched speakers and amplifier integration to improve volume and reduce distortion. Verify factory amp and premium system integration before adding aftermarket amplifiers, especially on trims with the JBL GreenEdge system or optional amplification. | Higher output only works well when the speakers and amplification are matched correctly. Checking the factory audio package first helps avoid level mismatch, distortion, or integration issues. |
| Budget improvement | Replace the front door speakers first with same-size replacement speakers and the correct mounting brackets. If you want a second step later, move to the dash corner speakers for a fuller front-stage improvement. | The front doors are the most-used speakers in everyday listening, so they usually give the best return for a modest budget. Starting there improves the sound where it matters most before spending on the rest of the cabin. |
| 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. It also helps the upgrade stay reversible and avoids visible changes to the cabin. |
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 2017 Toyota Avalon?
The front door speakers are 6 x 9 inches. This model also uses 3.5-inch mid-range speakers in the dash corners and rear deck corners, so speaker location matters when planning an upgrade.
What size are the rear speakers in a 2017 Toyota Avalon?
Rear speaker size can vary by location. The rear doors use 3.5-inch mid-range speakers, and the rear deck corners also use 3.5-inch mid-range speakers plus 6 x 9-inch full-range speakers.
Does the 2017 Toyota Avalon have a factory subwoofer?
A factory subwoofer is not listed for this model. If your Avalon has an upgraded audio package, verify the system layout before ordering parts.
Do I need mounting adapters for speaker replacement?
Mounting adapters may be needed depending on the speaker location and the replacement speaker size. The Avalon uses a mix of 6 x 9-inch and 3.5-inch speaker positions, so fitment should be checked carefully.
Can I replace the speakers without replacing the radio?
Yes, speaker upgrades can be done while keeping the factory radio. The best results depend on matching the new speakers to the existing system and checking whether your trim has an upgraded audio setup.
Does the 2017 Toyota Avalon have a factory amplifier?
Factory amplifier details should be verified by trim and audio package. Some trims list an amplifier, while others do not, so the audio system can vary across the lineup.