2017 Audi A4 Speaker Sizes and Audio System Guide
2017 Audi A4 Speaker Sizes and Audio System Guide
This page covers the factory speaker layout, common speaker locations, and upgrade considerations for the 2017 Audi A4. Equipment can vary by trim, body style, or audio package, so factory amplifier details should be verified by the specific build. Some audio systems may also include tweeters, a subwoofer, or a center channel if equipped. Use the trim table below to compare speaker count and factory audio equipment before planning upgrades.
Data verified by Nick Marchenko, PhD
Speaker Size Chart – 2017 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 – 2017 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 stereo, seek-scan | ✓ |
| 2.0T Premium 4dr Front-wheel Drive Sedan | 10 | 180W | AM/FM stereo, 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
This model is offered in multiple body styles, and equipment can vary by configuration. Since no body-style-specific speaker data is listed here, rear speaker placement and factory audio packages should be verified for the exact vehicle. Front and rear audio hardware may also differ with trim and selected options.
What Speakers Fit the 2017 Audi A4?
Aftermarket fitment should start with the factory speaker locations listed for this 2017 Audi A4, 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. The factory layout includes a mix of 6.5-inch full-range speakers, 3.5-inch mid-range speakers, and several optional 1-inch tweeters, so the right replacement depends on the exact location and audio package. Optional subwoofer equipment may also be present on some setups.
Usually Safe Upgrades
- If your vehicle uses the front door 6.5-inch full-range location, that is the main place to start for a standard speaker replacement.
- If your vehicle uses the rear door 6.5-inch full-range location, match the factory size and verify depth before buying.
- If your vehicle uses the front door 3.5-inch mid-range location, look for a speaker built for that smaller opening.
- If your vehicle uses the rear deck corner 3.5-inch mid-range location, confirm the mounting style and available clearance.
- If your vehicle uses a 1-inch tweeter location, such as the front pillar, dash corner, or rear door, choose a tweeter replacement only if that location is equipped.
Check Before Buying
- Confirm the exact speaker location before ordering, since this model uses different sizes in different positions.
- Measure mounting depth and opening shape, not just diameter, because factory fitment can vary by location.
- Verify connector type and factory amplifier details by trim and audio package.
- Check whether the vehicle has optional tweeters or an optional rear subwoofer before selecting replacement parts.
- Use the trim audio data as a guide, since speaker count and amplifier output can vary by configuration.
Installation Notes
The 2017 Audi A4 uses a 10-speaker layout on the trims listed here, with 1-inch tweeters, 3.5-inch mid-range speakers, 6.5-inch full-range speakers, and optional center-channel and subwoofer locations depending on equipment. Before starting, verify the exact audio package in your vehicle so you know which speaker positions are active. Panel removal will be needed at the doors, dash corners, and any rear locations you plan to service, so work carefully to avoid damaging clips, trim edges, and wiring connectors. Speaker depth should be checked before ordering replacements, especially in the front doors and rear deck area where clearance can be limited. Mounting adapters may be required to match the factory openings, and harness adapters can help keep the wiring clean and reversible. If your vehicle has the factory subwoofer, confirm the enclosure opening and connector style before choosing a replacement. After installation, test each speaker position one at a time to confirm polarity, balance, and overall sound before reassembling the panels.
Moderate difficulty, since trim removal, fitment checks, and careful wiring verification are important for a clean installation.
Common Mistakes When Replacing Speakers
When shopping for a 2017 Audi A4 audio upgrade, the biggest problems usually come from assuming every car is wired the same instead of checking the exact speaker layout and trim audio package first.
- Buying based only on the body-style label instead of checking actual speaker locations on the vehicle.
- Ignoring trim and audio package differences, even though the factory amplifier details should be verified by trim and audio package and the speaker count can change with equipment.
- Choosing speakers without confirming mounting depth and size, especially at the front door, rear door, and dash locations where fitment can vary.
- Overlooking connector style and wiring compatibility, which can turn a simple speaker swap into a wiring job if the factory plugs do not match the new speakers.
- Assuming tweeters or the rear deck subwoofer are always present, when those components are listed as if equipped and should be confirmed on the vehicle.
- Reassembling the panels before testing the system, which can leave you with a loose connector, a reversed speaker, or a missing channel that is harder to diagnose later.
Generation & Model Family
The 2017 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 2017 Audi A4 uses a 10-speaker layout on the trims listed here, and equipment can vary by audio package. A smart upgrade plan starts with the front stage, then moves to bass and amplification if you want a bigger change. Factory amplifier details should be verified by trim and audio package before planning any system changes.
| Goal | Best Upgrade Path | Why |
|---|---|---|
| Better clarity | Upgrade the front door speakers first, then add matching front tweeters if equipped, and consider the center channel if your system has one. | The front stage does most of the work for vocals and detail, so improving those speakers usually gives the cleanest jump in clarity. If tweeters are present, upgrading them helps tighten the highs and makes the whole system sound more refined. |
| More bass | If the factory subwoofer is equipped, treat it as a starting point and add an aftermarket subwoofer solution for stronger low-end output. | The listed system may include an 8-inch subwoofer depending on trim or audio package, but factory bass is often limited. Adding a dedicated aftermarket subwoofer gives you more output and deeper bass without relying only on the stock low-end speaker. |
| Louder sound | Use properly matched speakers and amplifier integration to improve volume and reduce distortion, and verify factory amp or premium system integration before adding aftermarket amplifiers. | Higher output only works well when the speakers and amplifier are matched correctly. Checking how the factory audio system is configured first helps avoid integration problems and makes it easier to build a louder system that still sounds clean. |
| Budget improvement | Replace the most-used front door speakers first with same-size replacement speakers and the correct mounting brackets. | Front door speakers handle a large share of everyday listening, so this is usually the best place to spend a limited budget. Starting there gives a noticeable improvement 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 cabin looking original while still improving sound quality. It also helps maintain a tidy installation and avoids unnecessary changes to the factory interior layout. |
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 Audi A4?
The front door locations use 3.5-inch mid-range speakers and 6.5-inch full-range speakers. Tweeter locations may also be present if equipped, depending on the audio package.
What size are the rear speakers in a 2017 Audi A4?
The rear door uses 6.5-inch full-range speakers, and the rear deck corner uses 3.5-inch mid-range speakers. A rear deck subwoofer may also be included if equipped.
Does the 2017 Audi A4 have a factory subwoofer?
A factory subwoofer is listed for this model and may be trim-dependent. The rear deck corner can include an 8-inch subwoofer if equipped, so it should be verified by trim and audio package.
Do I need mounting adapters to replace the speakers?
Speaker locations and sizes vary across the system, so mounting adapters may be needed depending on the speaker location and replacement choice. Check the exact opening before ordering parts.
Can I replace the speakers without replacing the radio?
Yes, speaker replacement can be done while keeping the factory radio. The 2017 Audi A4 uses a 10-speaker setup on the listed trims, so matching the new speakers to the system is important.
Does the 2017 Audi A4 have a factory amplifier?
Factory amplifier details should be verified by trim and audio package. The listed trims show a 180W amplifier, but it is not universal across every version of the model.