Start with what is installed
Factory System Overview
Both the base and Premium systems use six speakers. The base receiver includes AM/FM/XM/CD/MP 3 playback; the upgraded unit adds Hyundai Navigation. Decide whether the original amplifier will remain before selecting speakers. A 4-ohm replacement on a retained low-impedance factory system can reduce output. If bypassing the factory amplifier and powering the speakers from an aftermarket receiver, the source recommends replacing the low-impedance speakers with appropriate 4-ohm models to avoid an unsuitable load. A separate aftermarket amplifier requires its own matching and wiring plan.
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
2011–2016 Elantra sedan and 2013–2014 Elantra coupe. Excludes Elantra GT hatchback; verify navigation, amplifier and body style.
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
Both researched receivers can be replaced by a single-DIN or double-DIN unit with the correct installation parts. Navigation and non-navigation models have different trim-panel openings, so use the kit for the actual factory radio.
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
Both researched receivers can be replaced by a single-DIN or double-DIN unit with the correct installation parts. Navigation and non-navigation models have different trim-panel openings, so use the kit for the actual factory radio. Removing the receiver loses the factory navigation, satellite-radio capability and original AUX/USB connections; choose replacement features or verified retention hardware where needed. Access starts with the two receiver-side trim panels, each held by nine clips. Six Phillips screws and eight clips retain the center trim. Protect the dash and support that panel while its wiring remains connected. Four more Phillips screws secure the receiver itself. Disconnect its harnesses only after the assembly is supported. Use the selected kit and harness instructions for installation, and verify source playback and retained controls before refitting the trim. Steering-wheel controls need an adapter compatible with both the car and replacement receiver.
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 door tweeters, sedan and coupe
Browse by size; verify depth, mounting and electrical compatibility.Sedan rear doors
Browse by size; verify depth, mounting and electrical compatibility.Speaker Upgrades
Check each mounting location separately. Nominal diameter alone does not establish depth, grille clearance, impedance or a suitable signal from the factory amplifier.
Front door tweeters, sedan and coupe
Factory: 1.577-inch diameter
Replacement planning: Fit-checked tweeters
Adapted mounts or suitable weather-resistant adhesive required; confirm installation depth.
Front door woofers, sedan and coupe
Factory: 6¾-inch
Replacement planning: Vehicle-fit-checked speakers
Adapter brackets required; factory mounting may use screws or rivets.
Electrical note: Low-impedance factory woofers
Sedan rear doors
Factory: 6¾-inch
Replacement planning: 6¾-inch, 6½-inch
Adapter brackets and harnesses required; expect T-20 screws or rivets.
Coupe rear quarter panels
Factory: 6¾-inch
Replacement planning: Vehicle-fit-checked speakers
More trim removal than sedan rear doors; confirm brackets and actual fasteners.
Access and mounting
Remove the front door panels carefully and store them away from the work area. The tweeters are mounted to those panels, while the woofers need matched mounting brackets. Some brackets require inner-tab trimming. Inspect the original woofer fasteners before proceeding: screws can be removed normally, but rivets must be drilled out with the window and wiring protected. The source lists a 3/16-inch bit for door rivets and suggests a short split-point bit with cutting oil. Wear eye protection and remove metal debris before assembly. Sedan rear speakers use similar access, with T-20 screws on many cars but rivets on some. Coupe rear speakers sit behind the quarter trim rather than in rear doors. Keep those panels and fasteners organized and restore seat-belt attachments to the manufacturer’s specifications. In every location, confirm speaker impedance against the planned amplifier arrangement, then test operation, window travel and locks before refitting the panels.
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; Small flat-blade and Phillips screwdrivers; Torx T-20 driver; Drill with 3/16-inch bit for door rivets; 1/8-inch bit for applicable rear-quarter work; 12 mm socket, ratchet and extension; Eye protection
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 source measured the sedan trunk at approximately 40 inches wide, 16 inches high and 32–40 inches deep. The coupe measurement is approximately 42 inches wide, 17 inches high and 31–38 inches deep. Those are distinct body-style measurements, not interchangeable enclosure specifications. Confirm the actual car, seatback angle and trunk opening so a box that fits on paper can also be loaded and secured. Consider how much everyday luggage space must remain. A compact enclosure or powered subwoofer can add low-frequency support while taking less room than a large separate enclosure. Any amplifier installation still needs appropriate power wiring, fusing, ventilation and secure mounting.
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.
