What This Retrofit Includes

• One genuine Meridian 400‑watt amplifier module, selected to match your vehicle’s platform and mounting location (typically under the front seat or in the luggage compartment).
• A complete set of OEM speakers that the 400W system requires – this replaces the base‑level door drivers, adds a dedicated centre speaker, and installs a powered subwoofer enclosure where the design allows.
• Vehicle‑specific wiring loom integration. We connect the amplifier to the existing infotainment MOST or CAN bus network, and run the additional speaker wiring exactly as the factory would.
• Configuration of the Audio Amplifier Module (AAM) and Car Configuration File (CCF) using JLR Pathfinder. This step tells the vehicle’s network that the Meridian 400W system is present, activates all twelve channels and the surround processing, and sets the correct equalisation profile.
• A full system validation – we play white noise, sine sweeps, and your own music at low and high volume to confirm every channel operates correctly with zero distortion or interference.

Compatible Jaguar & Land Rover Models

The Meridian 400W system was engineered for JLR’s smaller Premium Transverse Architecture and closely related platforms. Vehicles that received this system as an optional upgrade from the factory are the best candidates because the wiring loom and mounting points are already prepared.

We check your VIN to confirm that the vehicle’s infotainment system (InControl Touch Pro) and existing harness can support the 400W upgrade. In many cases the base audio wiring uses a lower channel count. We supply and install the complete, correct harness so the finished installation uses no cut corners.

How the Meridian 400W System Delivers Premium Sound

The Meridian 400W amplifier processes audio digitally through a dedicated 12‑channel Digital Signal Processor (DSP). Active crossovers direct specific frequency bands to each speaker driver, eliminating distortion and phase issues. The system distributes 400 watts across up to twelve speakers, including a centre channel for precise vocal imaging and a subwoofer that delivers deep, accurate bass. Meridian’s proprietary Trifield and Surround processing creates an immersive sound stage that standard stereo systems cannot match, while the factory‑tuned equalisation ensures the sound remains natural at any volume.

The Retrofit Process Step by Step

1. You place your order and share your vehicle’s VIN. We source the exact amplifier, speaker kit, and harness specific to your model.
2. Our mobile technician arrives at your location with the genuine parts and a JLR‑approved Pathfinder diagnostic interface.
3. We install the amplifier module in its designated position. For Discovery Sport and Evoque this usually means the factory bracket under the passenger seat or inside the rear‑quarter trim; for E‑Pace it mounts behind the left‑hand boot panel. The wiring integrates directly with the vehicle’s MOST bus and power distribution, just as the production line would do.
4. We replace the base speakers with the higher‑capacity Meridian drivers, fit the centre speaker into the dash opening, and mount the subwoofer enclosure if your trim did not include one. Every panel and fastener returns to the original torque specification.
5. We reconfigure the vehicle’s software using Pathfinder. We change the CCF audio system setting from “Base Audio” or “180W” to “Meridian 400W Surround”, and load the correct calibration file to the Audio Amplifier Module. This step activates all channels, the centre speaker, the subwoofer, and the Meridian listening modes (Stereo, Meridian, Dolby Pro Logic II).
6. We validate the entire system. Before we leave, you play your favourite tracks and we verify that volume, balance, fader, surround modes, and speed‑dependent volume compensation all work perfectly through the original touchscreen controls.

Why Choose LR‑Retrofit for This Audio Upgrade

• Complete OEM integration – You receive the genuine amplifier, speakers, and wiring that the factory would have installed. Every dashboard control, volume knob, and audio menu remains unchanged.
• Full software enablement – We do not bypass amplifiers or use line‑output converters. The vehicle’s CCF and AAM recognise the Meridian hardware, giving you the correct DSP tuning and surround processing.
• Mobile installation that fits your schedule – You avoid the dealership service bay. We complete the full audio transformation at your home or workplace.
• Warranty‑safe procedure – Because we use only original JLR parts and the manufacturer’s own diagnostic tool, the retrofit preserves your vehicle’s warranty and does not alter any safety or security systems.

Important Considerations Before You Book

The Meridian 400W upgrade works exclusively with vehicles that have the InControl Touch Pro infotainment system (10‑inch screen). It requires the MOST (Media Oriented Systems Transport) network connection that the base‑level InControl Touch system does not always provide. We will verify your VIN’s build specification before ordering parts so there is no guesswork.

The upgrade improves every part of the frequency range – you gain clarity, not just volume. Because the system uses active crossovers and a dedicated subwoofer, you will hear details in your music that the standard speakers cannot reproduce. We supply all the necessary speaker grilles, brackets, and fixings so the cabin appearance remains stock. The complete retrofit typically takes around three to four hours, depending on the vehicle and the specific audio configuration you are starting from.