2019 Audi A4 Speaker Sizes and Audio System Guide
2019 Audi A4 Speaker Sizes and Audio System Guide
This page covers the 2019 Audi A4 speaker layout, factory audio equipment, and the key notes to check before planning an upgrade. Equipment can vary by trim, body style, or audio package, and some speaker locations are only present if equipped. The speaker data shown is based on generation information, so verify details against your specific vehicle before ordering parts or choosing an upgrade path.
Data verified by Nick Marchenko, PhD
Speaker Size Chart – 2019 Audi A4
Use this table as the main reference. Fitment depends on trim, factory audio package, mounting depth, and adapter availability.
| Location | Type | Factory Size | Note |
|---|---|---|---|
| Front Pillar | Tweeter | 1 inch | if equipped |
| Rear Deck Corner | Mid-Range | 3.5 inch | |
| Rear Deck Corner | Subwoofer | 8 inch | if equipped |
| Front Door | Mid-Range | 3.5 inch | |
| Front Door | Full-Range | 6.5 inch | |
| Dash Corner | Tweeter | 1 inch | if equipped |
| Rear Door | Tweeter | 1 inch | if equipped |
| Rear Door | Full-Range | 6.5 inch | |
| Center Dash | Center Channel | 1 inch | if equipped |
| Center Dash | Center Channel | 2.5 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.
Speaker Count by Trim – 2019 Audi A4
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 |
|---|---|---|---|---|
| 2.0T Premium 4dr All-wheel Drive quattro Sedan | 10 | 180W | AM/FM/HD/Satellite-prep, seek-scan | ✓ |
| 2.0T Premium 4dr Front-wheel Drive Sedan | 10 | 180W | AM/FM/HD/Satellite-prep, seek-scan | ✓ |
| 2.0T Titanium Premium 4dr Front-wheel Drive Sedan | 10 | 180W | 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.
Body Style Audio Differences
Different body styles of the 2019 Audi A4 may vary in rear speaker placement and factory audio packages, so verify the exact setup before ordering parts. Based on generation data, this model can include front, rear, and center speaker locations, with tweeters and a subwoofer if equipped. Factory amplifier details should be verified by trim and audio package.
What Speakers Fit the 2019 Audi A4?
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. Based on generation data for this 2019 Audi A4, the common factory sizes include 6.5-inch full-range speakers, 3.5-inch mid-range speakers, and 1-inch tweeters if equipped. Selected audio systems may also include a subwoofer if equipped, so verify the exact setup before ordering.
Usually Safe Upgrades
- If your vehicle uses the 6.5-inch front door or rear door location, look for replacement full-range speakers in that size and confirm depth and connector style before buying.
- If your vehicle uses the 3.5-inch front door or rear deck corner location, choose a replacement mid-range speaker that matches the factory opening and mounting pattern.
- If your vehicle uses a 1-inch tweeter location in the front pillar, dash corner, rear door, or center dash, verify whether the opening is active in your audio package before selecting a replacement.
- If your vehicle uses the 8-inch rear deck corner subwoofer location, confirm that the system is actually equipped with that speaker before shopping for a replacement.
Check Before Buying
- Verify the exact speaker location in your car, since the 2019 model year data is based on generation information and should be checked before ordering.
- Confirm whether your audio system is factory-amplified, because trim and audio package details can change speaker compatibility.
- Measure mounting depth and check the factory connector type so the replacement matches the opening and wiring.
- Compare your vehicle’s speaker count and layout with the trim audio data, since equipment can vary by trim.
Installation Notes
Based on generation data for the 2019 Audi A4, factory speaker layouts can vary by trim and audio package, so verify the exact system before ordering parts. Front door and rear door speaker locations use 6.5-inch and 3.5-inch positions, and some systems may also include tweeters, center-channel speakers, or an 8-inch subwoofer if equipped. Panel removal should be done carefully to avoid breaking clips or damaging trim, especially around the doors, dash corners, and rear deck area. Check speaker depth and mounting space before choosing replacements, since shallow clearance can affect fitment. Mounting adapters may be needed for some locations, and a harness adapter can help keep factory wiring intact. If your vehicle has the factory subwoofer, confirm the enclosure opening and connector style before replacing it. After installation, test every speaker location at low volume first to confirm polarity, balance, and full-range operation before reassembling the panels.
This installation is moderately difficult because trim removal, wiring verification, and speaker-depth checks all need careful attention.
Common Mistakes When Replacing Speakers
The biggest audio-fit mistakes on the 2019 Audi A4 usually happen when buyers rely on broad trim assumptions instead of checking the exact speaker layout and audio package on the vehicle.
- Buying based only on the body-style label instead of checking actual speaker locations on the vehicle, since the speaker layout can still vary and the 2019 data is based on generation information that should be verified before ordering.
- Ignoring trim and audio package differences, especially because factory amplifier details should be verified by trim and audio package and the listed 10-speaker systems are not universal across every configuration.
- Ordering speakers without confirming mounting depth and overall size, which matters here because the vehicle uses a mix of 3.5-inch, 6.5-inch, 1-inch, and optional 2.5-inch locations depending on position.
- Assuming every opening uses the same connector or adapter, when the front door, rear door, dash corner, center dash, and rear deck locations may require different connector checks before installation.
- Treating tweeters or the subwoofer as standard equipment instead of checking whether they are if equipped, since the front pillar, dash corner, rear door, center dash, and rear deck subwoofer positions can be optional.
- Skipping a test fit and audio test before reassembly, which can leave you with a speaker that fits physically but still needs connector verification, polarity checking, or trim adjustments.
Generation & Model Family
The 2019 Audi A4 belongs to the Fifth generation (B9) (2017–2019) 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 2019 Audi A4 in the B9 generation uses a 10-speaker setup on the trims listed here, and equipment can vary by audio package. Based on generation data, the front stage is the best place to start for most upgrades, while factory amplifier details should be verified by trim and audio package before planning a larger system change.
| Goal | Best Upgrade Path | Why |
|---|---|---|
| Better clarity | Start with the front door speakers and any front tweeters if equipped, then move to the rear door speakers if you want a fuller soundstage. | Front-stage upgrades usually deliver the biggest improvement in vocals, detail, and high-frequency clarity. Since tweeters are listed in the generation data, focusing on the front stage can make the system sound cleaner without changing the whole system at once. |
| More bass | If the factory subwoofer is equipped, consider replacing it carefully or adding an aftermarket subwoofer to complement the factory speakers. | Bass upgrades are usually the most noticeable change for everyday listening. A factory subwoofer may be trim-dependent, so verify the system before ordering, then choose an aftermarket sub option that fits your space and listening goals. |
| 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. | Higher output only works well when the speakers and amplification are matched correctly. Checking the factory audio package 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. | The front doors handle the most important everyday sound, so upgrading them first gives the best value. This approach improves clarity and balance without requiring 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. It also helps maintain a tidy installation and reduces the chance of wiring issues during the upgrade. |
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 2019 Audi A4?
Based on generation data, the front door uses a 6.5-inch full-range speaker and a 3.5-inch mid-range speaker. Tweeter locations may also be present if equipped. Verify the exact setup before ordering, since speaker data for 2019 is based on the same generation.
What size are the rear speakers in a 2019 Audi A4?
Based on generation data, the rear door uses a 6.5-inch full-range speaker, and the rear deck corner uses a 3.5-inch mid-range speaker. A rear deck subwoofer may also be present if equipped. Verify the audio package before buying replacement speakers.
Does the 2019 Audi A4 have a factory subwoofer?
A factory subwoofer is listed and may be trim-dependent if equipped. The rear deck corner can include an 8-inch subwoofer based on generation data. Check the trim and audio package before ordering replacement parts.
Do I need mounting adapters for speaker replacement?
Mounting adapter needs can vary by speaker location and audio package. Because the 2019 speaker data is based on the same generation, verify the factory speaker size and mounting style before ordering. This helps avoid surprises during installation.
Can I replace the speakers without replacing the radio?
Yes, speaker replacement can be done without replacing the radio in many cases. The 2019 A4 uses a factory audio setup that can vary by trim, so verify the speaker locations and amplifier details before choosing new speakers.
Is there a factory amplifier in the 2019 Audi A4?
Factory amplifier details should be verified by trim and audio package. Some trims list a 180W amplifier, while others may differ. Check the vehicle’s audio equipment before planning an upgrade.