2014 Audi A4 Speaker Sizes and Audio System Guide
2014 Audi A4 Speaker Sizes and Audio System Guide
This page covers the factory speaker locations, original equipment sizes, and upgrade notes for the 2014 Audi A4. Equipment can vary by trim, body style, and audio package, so some speakers may be included only on certain setups. Factory amplifier details should be verified by trim and audio package, and selected audio systems may also include additional speakers such as tweeters, a center channel, or a subwoofer if equipped.
Data verified by Nick Marchenko, PhD
Speaker Size Chart – 2014 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 |
|---|---|---|---|
| Rear Deck Corner | Mid-Range | 3.5 inch | |
| Rear Deck Corner | Subwoofer | 8 inch | if equipped |
| Front Door | Tweeter | 1 inch | if equipped |
| 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 | 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 – 2014 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 | – | – |
| 2.0T Premium 4dr Front-wheel Drive FrontTrak Sedan | 10 | 180W | – | – |
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 2014 Audi A4 may vary in rear speaker placement and factory audio packages, so equipment can vary by configuration. The listed speaker layout applies to the model data provided, but factory amplifier details should be verified by trim and audio package. If equipped, tweeters, a center channel, and a rear subwoofer may also be part of the system.
What Speakers Fit the 2014 Audi A4?
Aftermarket fitment should start with the factory speaker locations listed for this 2014 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 listed 6.5-inch front and rear door speakers are the main starting points, while optional tweeters, a center channel, and an 8-inch rear deck subwoofer may be present depending on the audio package. Factory amplifier details should be verified by trim and audio package.
Usually Safe Upgrades
- If your vehicle uses this location, the 6.5-inch front door full-range speakers are the primary replacement point for most sound upgrades.
- If your vehicle uses this location, the 6.5-inch rear door full-range speakers are another common upgrade area.
- If your vehicle uses this location, the 3.5-inch rear deck corner mid-range speakers can be replaced with matching-size aftermarket speakers.
- If your vehicle uses this location, the optional 1-inch tweeters in the front door, dash corner, or rear door can be upgraded when equipped.
- If your vehicle uses this location, the optional 2.5-inch center dash channel and optional 8-inch rear deck subwoofer should be matched carefully to the factory opening and audio system.
Check Before Buying
- Confirm the exact speaker location and size before ordering, since optional tweeters, the center channel, and the subwoofer may not be present on every vehicle.
- Measure mounting depth and opening shape, because a matching diameter does not guarantee the speaker will fit correctly.
- Check the connector style and factory wiring so the replacement can be matched to the vehicle harness.
- Verify whether the car has the 180W factory audio setup or another amplified system, since that can affect speaker choice and performance.
- Use the trim and audio package to confirm which speaker locations are actually installed on your A4.
Installation Notes
The 2014 Audi A4 uses a 10-speaker layout on the trims listed, with 6.5-inch full-range speakers in the front and rear doors, 1-inch tweeters if equipped, a 3.5-inch rear deck corner mid-range, and an optional 8-inch rear deck corner subwoofer if your vehicle has the factory subwoofer. Some versions may also include a center dash speaker, so verify the audio package before ordering parts. Panel removal is required at the door and rear deck locations, and care should be taken with clips, trim surfaces, and hidden fasteners during disassembly. Check speaker depth and mounting depth carefully, especially in the doors and rear deck area, because space can be limited. Mounting adapters and harness adapters are often needed to match the factory openings and wiring connectors. If your vehicle has the factory subwoofer, confirm the enclosure and impedance before choosing a replacement. After installation, test each channel for balance, polarity, and proper operation before reassembling the panels.
Moderate difficulty, since access, trim removal, and fitment checks matter before installation.
Common Mistakes When Replacing Speakers
When shopping for speaker upgrades on the 2014 Audi A4, the biggest errors usually come from assuming every car in the lineup uses the same audio layout or parts.
- Buying based only on the body-style label instead of checking actual speaker locations on the vehicle.
- Skipping trim and audio package verification, even though factory amplifier details should be confirmed by trim and audio package and the speaker count can vary by configuration.
- Ordering speakers without confirming mounting depth, diameter, and connector style for the front door, rear door, dash corner, and rear deck locations.
- Assuming the optional tweeters or the 8-inch rear deck subwoofer are present on every vehicle instead of checking whether they are equipped.
- Ignoring the 180W factory audio setup shown for some trims and choosing upgrades without matching the system layout and signal needs.
- Reassembling the interior before testing every speaker location, polarity, and channel to make sure the new parts play correctly.
Generation & Model Family
The 2014 Audi A4 belongs to the Fourth generation (B8) - Facelift (2013–2016) 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 2014 Audi A4 uses a 10-speaker layout on the trims listed here, and equipment can vary by audio package. For buyers planning upgrades, the front stage is usually the best place to start, while factory amplifier details should be verified by trim and audio package before adding more power or changing system balance.
| Goal | Best Upgrade Path | Why |
|---|---|---|
| Better clarity | Upgrade the front door speakers first and, if equipped, pair them with better front tweeters for cleaner highs and more detailed mids. | The front stage carries most of the sound you hear every day, so improving it gives the biggest jump in clarity. If tweeters are equipped, matching them with better front speakers can sharpen vocals and reduce harshness. |
| More bass | If the factory rear-deck subwoofer is equipped, consider replacing it carefully or adding an aftermarket subwoofer to complement the factory speakers. | A dedicated subwoofer upgrade is the most effective way to add low-end impact. Factory subwoofer integration should be checked first so the new bass setup works well with the existing system balance. |
| 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. | Higher output only helps when the speakers and amplification are matched correctly. Checking the factory audio setup first helps avoid level mismatch, noise, or uneven sound after the upgrade. |
| Budget improvement | Replace the front door speakers first with same-size replacement speakers and the correct mounting brackets. | Front door speakers do the most work in daily listening, so upgrading them first gives the best value. This approach improves sound 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 keeps the cabin looking original while still improving sound quality. It also helps the upgrade blend in with the existing interior and avoids unnecessary changes to the factory 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 2014 Audi A4?
The front door full-range speakers are 6.5 inches. Front door tweeters are 1 inch if equipped, so check the audio package before ordering parts.
What size are the rear speakers in a 2014 Audi A4?
The rear door full-range speakers are 6.5 inches. The rear deck corner mid-range speakers are 3.5 inches, and rear door tweeters are 1 inch if equipped.
Does the 2014 Audi A4 have a factory subwoofer?
A factory subwoofer is listed on some setups and may be trim-dependent if equipped. Verify the audio package before choosing replacement parts or upgrades.
Do I need mounting adapters for speaker replacement?
Mounting adapters may be needed depending on the speaker location and the replacement speaker design. Check the factory speaker size and mounting depth before buying.
Can I replace the speakers without replacing the radio?
Yes, speaker upgrades can often be done while keeping the factory radio. Factory amplifier details should be verified by trim and audio package before planning the upgrade.
Is there a factory amplifier in the 2014 Audi A4?
Factory amplifier details should be verified by trim and audio package. The listed audio data shows 180W on some trims, but equipment can vary.