Start with what is installed
Factory System Overview
Factory choices include a six-speaker system and a seven-speaker system with a rear-deck subwoofer. Some 2016-and-later equipment includes Apple CarPlay and Android Auto. The upper display is separate from the receiver below it, so replacing an eligible receiver does not mean removing every factory screen. Conversely, a familiar-looking dashboard is not proof that the same radio kit fits every year and option package.
Inspect before ordering
Record the model year, factory audio package and any previous modifications. Listen to every channel and note faults before taking the vehicle apart. A working baseline makes the final checks meaningful.
Guide coverage
Planning guide, not a fitment guarantee. Match wiring, impedance, adapters and removal procedures to the actual vehicle. Photos show selected configurations, not every trim or a complete removal sequence.
Radio Upgrade
For supported receiver configurations, choose the exact kit and interface needed to retain the upper vehicle-information and camera display. Factory AUX, USB, satellite-radio and navigation features can be lost when the original receiver is removed; build an explicit retention list rather than promising all original functions will remain.
Connections and clearance
Make secure insulated connections and leave service length without trapping cables. Check mounting stability, vents, switches and display clearance. A plug that fits physically does not prove amplifier or vehicle-function compatibility.
Test the complete system
Verify reception, source playback, balance, fade and any retained steering-wheel controls. Restore all required dash connections before powering the vehicle for a test, following vehicle safety procedures.
Radio access and integration
For supported receiver configurations, choose the exact kit and interface needed to retain the upper vehicle-information and camera display. Factory AUX, USB, satellite-radio and navigation features can be lost when the original receiver is removed; build an explicit retention list rather than promising all original functions will remain. Access involves side and upper trim, console-pocket work and lower receiver fasteners. Support the trim as clips release and protect the adjacent finish. In a 2016–2017 coupe with the seven-inch LCD receiver, keep the factory unit and plan around compatible speaker or amplifier integration instead of treating radio replacement as the default.
Before disassembly
Use the instructions for the exact vehicle and selected installation kit. Support removed trim and the receiver, retain fasteners by location, and stop if the wiring or dashboard differs from the documented configuration.
Shop Speaker Sizes
Browse verified collection categories, then confirm the actual installation requirements. These are not vehicle-specific fitment guarantees.
Front sail-panel tweeters
Browse by size; verify depth, mounting and electrical compatibility.Speaker Upgrades
Confirm which factory system is installed before using the locations below. A nominal diameter alone does not establish basket clearance, mounting pattern or electrical compatibility.
Front sail-panel tweeters
Factory: Factory tweeter assemblies
Replacement planning: Tweeters, custom fit
Replacement requires custom mounting and wiring connections; confirm the housing dimensions on the actual car.
Front doors
Factory: 6¾-inch
Replacement planning: Vehicle-verified door speakers
The factory woofer uses an 8mm retaining fastener. Replacement clearance can require trimming the plastic grille ring behind the door panel.
Rear deck
Factory: 6¾-inch
Replacement planning: 6¾-inch, verify fit
Rear pillars and deck trim must be removed. Check the panel grille rings and preserve safety-related retainers and seat-belt routing.
Rear-deck subwoofer, seven-speaker system
Factory: 8-inch
Replacement planning: Subwoofer, custom fabrication may be required
The original basket is strongly tapered. Its opening is much smaller than the nominal driver size, so a replacement may require metal work and a custom mount.
Access and mounting
The front doors combine a woofer behind the main panel with a separate tweeter near the mirror. These are different installation jobs: a door adapter does not solve the tweeter mounting problem. Test the woofer with the panel held in its installed position before deciding what grille-ring material must be removed. Rear-deck speakers require substantially more trim work, including pillar panels with safety-related retainers. Do not force those panels or improvise their attachment. With the deck exposed, inspect the optional subwoofer at the same time so that the area does not have to be dismantled twice.
Test before closing
Confirm polarity and each channel at a moderate level. Check window travel, latch operation and wiring clearance. Replace damaged clips and secure every panel without pinching its harness.
Tools
Panel tool; Phillips screwdriver; Small flat-blade screwdriver; 8mm and 10mm sockets as applicable; Ratchet and extension
Electrical and restraint safety
Follow the vehicle battery-disconnection and restraint-system precautions. Do not probe airbag wiring. Keep the ignition off during connection work and protect exposed conductors.
Before cutting or drilling
Inspect both sides for wiring, glass, fuel lines and safety components. Stop if clearance cannot be verified. Protect cut edges, wear eye protection and restore seat and restraint hardware correctly.
Bass and Amplifier
The factory eight-inch subwoofer is not a simple universal eight-inch swap. The research describes a tapered basket and a small deck opening, with some replacement installations requiring enlargement of the steel opening, an adapter and grille changes. Have a qualified installer assess that work before purchasing a driver; cutting metal is not a routine fitment assumption. A separate trunk enclosure avoids that particular mounting challenge but needs its own secure installation. The documented trunk space was about 44 inches wide and 16 inches high, with 20/27-inch depth measurements. Verify the coupe’s actual opening and seatback clearance before using those figures for planning.
Power and protection
Size cable, fusing and grounding for the equipment and run length. Protect the power cable close to its source, following the wiring system requirements. Route cables clear of sharp edges and moving hardware.
Final tuning
Start with conservative gain and crossover settings. Listen for distortion, rattles and missing channels. Check heat, charging-system behavior and unwanted key-off operation before considering the installation finished.
Installation Checklist
Work through the system in stages. Test before replacing trim, then repeat the checks after everything is secured.
- Record the exact vehicle year and audio package.
- Choose whether to retain or bypass the factory amplifier.
- Confirm radio kit, interface and antenna requirements.
- Measure speaker depth, opening and grille clearance.
- Plan safe wire routes, protection and equipment mounting.
- Gather tools and follow the vehicle's safety procedures.
- Label, connect, insulate and secure the wiring.
- Test every speaker channel at a moderate level.
- Check radio sources, phone audio and vehicle controls.
- Set gain and crossovers without audible distortion.
- Secure all trim, seats and safety-related hardware correctly.
- Recheck for rattles, heat and unwanted key-off operation.
Keep a record. Save the equipment models, interface instructions, wiring changes and tuning settings. Clear notes make future service easier and help another installer understand what has changed.
Car audio guides, upgrades and installation planning.
