1. Understanding the Shaker 500 Audio System
2011-2014 Mustang Shaker 500 Subwoofer Installation: The Shaker 500 audio system was one of the premium sound packages offered in the 2011–2014 Ford Mustang. It includes factory-installed amplifiers and door-mounted subwoofers, providing a richer bass compared to the standard stereo system. However, many Mustang owners look to upgrade or replace the factory subwoofers for better sound performance.
The factory Shaker 500 setup typically consists of:
- Two 8-inch subwoofers in the front doors.
- A separate amp powering the subs.
- Midrange speakers in the doors and rear deck.
- An integrated head unit with EQ control.
To install or upgrade a subwoofer correctly, you must understand the system’s wiring, impedance, and how it’s powered — since it uses low-impedance factory woofers not common in aftermarket systems.
2. Tools and Materials You’ll Need
Before starting your Mustang subwoofer installation, prepare all the necessary tools and parts to avoid interruptions.
Tools:
- Phillips and flathead screwdrivers
- Panel removal tool
- Socket wrench set
- Wire stripper and crimper
- Electrical tape or heat shrink tubing
- Multimeter (for checking voltage and polarity)
Materials:
- Aftermarket subwoofer (8″, 10″, or 12″ depending on your setup)
- Subwoofer enclosure (custom or prefab for Mustang trunk)
- Amplifier (if upgrading from factory amp)
- Wiring kit (power, ground, RCA, and speaker wires)
- Line output converter (LOC) if using factory head unit
Having all these components ready makes the installation process faster and safer, especially when working around factory wiring.
3. Removing the Factory Shaker 500 Subwoofers
The factory Shaker 500 subwoofers are located inside the front door panels, not in the trunk. Here’s how to remove them safely:
- Disconnect the battery to prevent electrical damage.
- Use a panel removal tool to pry off the door panel trim carefully.
- Unscrew and remove the door handle screws and control panel.
- Once the panel is loose, gently disconnect the wiring harnesses.
- Locate the 8-inch factory subwoofer and remove its mounting screws.
- Disconnect the subwoofer wires.
These factory woofers are 2-ohm speakers, meaning aftermarket replacements must be matched in impedance or you’ll need an external amplifier for proper performance.
4. Installing the New Subwoofer and Amplifier
Now that the old subs are removed, you can install new ones with or without an amplifier, depending on your audio goals.
Option 1: Using Factory Amp
If you want to keep the factory amplifier, use 2-ohm subwoofers that are compatible with the Shaker 500’s output. Connect the wires directly and mount the new subs in the same door enclosure.
Option 2: Upgrading with an Aftermarket Amp
- Run a power cable from the battery to the trunk (through the firewall).
- Install a fuse holder near the battery for protection.
- Mount your amplifier in the trunk area.
- Use a line output converter (LOC) to tap into the factory subwoofer wires for a clean signal.
- Connect RCA cables from the LOC to the amplifier.
- Run speaker wires from the amplifier to your new subwoofer box.
- Secure all connections, then reconnect the battery and test.
This setup delivers stronger bass response, deeper lows, and overall better clarity than the stock configuration.
5. Wiring and Configuration Tips
Proper wiring is the most crucial step in any subwoofer installation. Follow these expert recommendations for your 2011–2014 Mustang Shaker 500 system:
- Ground the amplifier using a clean metal point in the trunk.
- Always match speaker impedance with your amp’s rated output.
- Use 12-gauge wire or thicker for subwoofer connections.
- Keep power and signal wires separated to reduce noise interference.
- Set the amplifier’s gain and crossover correctly:
- Low-pass filter: 80–100 Hz
- Gain: Adjust until bass blends smoothly without distortion
- Use foam padding or sound deadening material behind the panels to prevent rattles.
Correct wiring ensures your subwoofers perform efficiently and avoid electrical issues or overheating.
6. Final Testing and Tuning
Once the installation is complete, take time to test and tune your system for the best sound quality.
- Reconnect the battery and power on the system.
- Play a bass-heavy track to test your new subwoofers.
- Check all connections for noise or distortion.
- Adjust amplifier gain, crossover, and bass boost as needed.
- Secure all loose wires and reinstall your panels carefully.
When tuned correctly, your upgraded Mustang Shaker 500 sound system will deliver powerful, clear bass — perfect for both daily driving and car shows.
Conclusion
Upgrading or installing a subwoofer in the 2011–2014 Mustang Shaker 500 system is one of the best ways to enhance your in-car audio experience. Whether you retain the factory amplifier or upgrade to an aftermarket setup, following the right steps ensures a clean, safe, and professional-quality installation.
With proper wiring, tuning, and component matching, your Mustang’s sound system can outperform even newer premium setups.
FAQs
1. What size are the factory Shaker 500 subwoofers?
They are 8-inch subwoofers mounted in the front doors.
2. Can I add a trunk subwoofer while keeping the door subs?
Yes, you can integrate an aftermarket subwoofer using a separate amp and LOC.
3. What impedance are the factory subs?
Factory Shaker 500 subs are 2-ohm speakers.
4. Do I need a new head unit for better bass?
Not necessarily. You can use a line output converter to connect to the stock unit.
5. Is professional installation recommended?
If you’re not experienced with car wiring, it’s safer to let a car audio technician handle the job.
