LEXUS

Upgrade your Lexus factory audio system with Focal Inside Plug & Play speaker kits from Focal Australia. Each vehicle-specific package is engineered for OEM fitment, using original Lexus mounting points and plug-in connectors so there is no cutting, no splicing and no permanent modification to the cabin. Installation is clean, fast and fully reversible, preserving the premium look and refinement of your Lexus interior.

By replacing the standard speakers with high-performance Focal drivers, these Plug & Play kits deliver a more detailed and dynamic soundstage, with clearer vocals, stronger mid-bass and smoother, more extended highs than the factory system can provide. You keep your original Lexus head unit, infotainment integration and vehicle features, while enjoying a genuine premium sound upgrade every time you drive.

Upgrade your Lexus factory audio with a professionally selected Focal speaker, amplifier, DSP, subwoofer and acoustic-treatment system.

Lexus vehicles are designed around refinement, quietness, comfort and premium cabin presentation. These qualities can provide an excellent foundation for a high-quality audio system, but the factory equipment, amplification and speaker configuration vary considerably between models and equipment grades.

Current and recent Australian Lexus vehicles that may be considered for a Focal audio upgrade include:

• Lexus LBX
• Lexus LBX Morizo RR
• Lexus UX
• Lexus NX
• Lexus RZ
• Lexus RX
• Lexus GX
• Lexus LX
• Lexus ES
• Lexus IS
• Lexus LS
• Lexus LC
• Lexus LC Convertible
• Lexus LM
• Lexus CT
• Lexus GS
• Lexus RC and RC F

Selected Lexus vehicles with compatible non-amplified factory audio systems may use Focal Inside products originally developed around Toyota and related vehicle platforms.

Potential products include:

• IS TOY 170 component speakers
• IS TOY 690 component speakers
• IS TOY 165 component speakers
• IC TOY 165 coaxial speakers
• IW TOY YISO harness
• IW TOYV2 YISO harness
• IMPULSE 4.320 amplifier
• ISUB ACTIVE
• ISUB ACTIVE 2.1
• ISUB TWIN
• HILO V3 high-to-low-level converter

Compatibility must not be assumed from the Lexus badge, speaker diameter or product-category assignment alone.

Focal Plug & Play speakers and Toyota/Lexus Y-ISO harnesses displayed by Focal Australia are intended for selected compatible non-amplified factory systems. They are not designed as direct replacements for factory-amplified or premium Lexus audio systems, including Mark Levinson configurations.

Some Lexus tweeters may also require plug or mounting-bracket adaptation.

Where a verified Focal Inside configuration is unavailable, an Authorised Focal Australia Dealer may design a tailored system using products from Focal’s wider component-speaker, coaxial-speaker, amplifier, DSP, subwoofer and acoustic-treatment ranges.

Depending on the Lexus and desired result, an upgrade may include:

• Front component-speaker replacement
• Rear speaker replacement
• Separate tweeter installation
• Custom speaker mounting adaptors
• Factory-connector adaptation
• Original-infotainment retention
• Factory-signal measurement
• Additional amplification
• Digital signal processing
• Compact subwoofer integration
• Strategic Focal BAM acoustic treatment
• Professional acoustic measurement
• Vehicle-specific system tuning

A correctly designed Focal system can provide clearer vocals, smoother treble, stronger mid-bass, improved stereo imaging, greater clean output and deeper, more controlled bass while retaining the refined appearance and original functionality of the Lexus cabin.

1. Can a Lexus factory audio system be upgraded with Focal speakers?

Potentially, yes.

Many Lexus factory audio systems can be improved, but the correct solution depends on the exact model, production year, equipment grade and factory audio package.

A Lexus speaker upgrade may provide:

• Clearer vocals
• Improved dialogue and telephone-call reproduction
• More natural instrument reproduction
• Smoother high-frequency detail
• Stronger and more controlled mid-bass
• Reduced distortion
• Greater clean volume
• Improved tonal balance
• Better stereo imaging
• Deeper bass
• A more refined listening experience at moderate volume

Before selecting products, the installer should identify:

• Exact Lexus model
• Production month and year
• Vehicle Identification Number
• Model generation
• Equipment grade
• Petrol, diesel, hybrid, plug-in hybrid or battery-electric drivetrain
• Factory infotainment system
• Number and location of speakers
• Standard, Panasonic, Mark Levinson or other factory audio system
• Existing factory amplifier
• Factory subwoofer
• Original speaker impedance
• Previous audio modifications
• Relevant vehicle software version

The installer should physically inspect:

• Speaker diameter
• Speaker basket shape
• Mounting-hole pattern
• Installation depth
• Magnet clearance
• Window clearance
• Door-card clearance
• Factory grille
• Connector type
• Tweeter location
• Tweeter bracket
• Wiring polarity
• Required mounting adaptor
• Moisture barrier
• Door sealing

A replacement speaker having the same advertised diameter as the factory speaker is not automatically compatible.

Impedance, sensitivity, mounting depth, factory amplification, active frequency filtering and connector design can all affect the result.

Professional assessment is particularly important when the Lexus has Mark Levinson branding, a factory subwoofer, a large number of speakers or factory Active Noise Control.

2. Is there a dedicated Focal Plug & Play speaker kit for Lexus vehicles?

Focal Australia lists selected Focal Inside Toyota-platform products for compatible Lexus vehicles.

These products may support an installation that retains:

• Original speaker locations
• Factory grilles
• Original wiring where compatible
• Factory infotainment
• Steering-wheel controls
• Cameras
• Telephone functions
• Navigation prompts
• Vehicle warnings
• An OEM-style cabin appearance

However, they should not be represented as universally compatible Lexus-specific packages.

Current Lexus-compatible listings include products such as:

• IS TOY 170
• IS TOY 690
• IS TOY 165
• IC TOY 165
• Toyota/Lexus Y-ISO harnesses
• IMPULSE 4.320
• Selected Focal compact subwoofers

Compatibility can vary according to:

• Lexus model
• Generation
• Production year
• Equipment grade
• Factory amplifier
• Speaker impedance
• Speaker position
• Connector
• Tweeter bracket
• Mounting depth
• Factory audio package

Some Lexus applications require tweeter-plug or mounting-bracket adaptation. Therefore, Plug & Play should not be used to imply that every installation requires no checking, no adaptation or no professional work.

Focal Plug & Play speakers and harnesses currently listed for Lexus are designed for selected compatible non-amplified systems only.

They are not intended as direct replacements for:

• Mark Levinson systems
• Other factory-amplified systems
• Speakers with incompatible impedance
• Actively filtered channels
• Vehicles with incompatible connectors
• Vehicles using an aftermarket head unit without suitable adaptation

The absence of Mark Levinson branding does not automatically prove that a Lexus is non-amplified or compatible.

The exact factory system must still be inspected and electrically tested.

3. Which Lexus models can be considered for a Focal audio upgrade?

Focal Australia’s compatibility information currently identifies selected applications across models including:

• Lexus CT
• Lexus ES
• Lexus GS
• Lexus GX
• Lexus IS
• Lexus LBX
• Lexus LM
• Lexus LS
• Lexus LX
• Lexus NX
• Lexus RC F
• Lexus RX
• Lexus UX

The current Australian Lexus range also includes vehicles such as:

• Lexus LBX and LBX Morizo RR
• Lexus UX
• Lexus NX
• Lexus RZ
• Lexus RX
• Lexus GX
• Lexus LX
• Lexus ES
• Lexus LS
• Lexus LC and LC Convertible
• Lexus LM

Not every current Lexus has a confirmed direct Focal Inside configuration.

Vehicles without a verified Plug & Play application may still be considered for a professionally tailored installation using suitable products from Focal’s wider speaker ranges.

Compatibility differences may result from:

• Model generation
• Production date
• Equipment grade
• Australian-delivered or imported specification
• Standard or premium audio
• Factory amplifier
• Mark Levinson system
• Speaker impedance
• Speaker size and mounting depth
• Infotainment generation
• Active frequency filtering
• Factory equalisation
• Active Noise Control
• Available full-range signals
• Hybrid or electric drivetrain
• Previous aftermarket modifications

Two Lexus vehicles sharing the same model name may use different speakers, amplifiers, connectors and infotainment architecture.

A Lexus RX from 2016, for example, should not be assumed to have the same audio configuration as a 2025 RX. The same applies to different generations of the NX, GX, LX, ES, LS and IS.

Imported Lexus vehicles require separate assessment because overseas equipment grades may differ from Australian-delivered vehicles.

Always confirm the exact model, production year and factory audio package before purchasing speakers or installation accessories.

4. What factory audio systems are installed in Lexus vehicles?

Lexus factory audio systems range from relatively conventional speaker arrangements to sophisticated multi-channel amplified systems.

Depending on the model and equipment grade, a Lexus may have:

• Standard factory audio
• Lexus Premium Sound
• Panasonic audio
• Mark Levinson Premium Audio
• Mark Levinson Premium Surround Sound
• Dedicated factory amplifier
• Factory subwoofer
• Centre-channel speaker
• Surround speakers
• Ceiling speakers
• Actively filtered channels
• Active Noise Control

Examples within current and recent Australian Lexus vehicles include:

• A standard audio system in selected entry grades
• A 10-speaker Panasonic system in the RZ Luxury
• A 13-speaker Mark Levinson system in selected LBX and RZ grades
• A 17-speaker Mark Levinson system in selected ES configurations
• A 21-speaker Mark Levinson system in selected RX and GX grades
• A 23-speaker Mark Levinson system in selected LS and LM configurations

Speaker count alone does not reveal:

• Individual speaker sizes
• Speaker impedance
• Factory amplifier location
• Power supplied to each speaker
• Frequency range supplied to each channel
• Crossover frequencies
• Signal polarity
• Factory equalisation
• Time alignment
• Surround processing
• Volume-dependent processing
• Active Noise Control interaction
• Whether vehicle sounds use particular channels

Before changing the system, an installer should confirm:

• Actual speaker count
• Speaker locations
• Speaker impedance
• Factory amplifier
• Factory subwoofer
• Available full-range signals
• Active frequency filtering
• Factory equalisation
• Signal polarity
• Telephone-audio routing
• Navigation-prompt routing
• Parking-warning routing
• Driver-assistance warning routing
• Start-up and shutdown behaviour
• Vehicle sleep behaviour

A multi-channel Mark Levinson system cannot be treated like a conventional four-speaker system connected directly to an ordinary head unit.

5. Can a Lexus Mark Levinson audio system be upgraded with Focal?

Potentially, but not by simply installing the Focal Plug & Play speakers and harnesses currently listed for compatible non-amplified Lexus systems.

Mark Levinson systems are normally designed as complete vehicle-specific systems incorporating:

• Dedicated multi-channel amplification
• Model-specific speakers
• Non-standard speaker impedance
• Active crossover filtering
• Factory equalisation
• Time alignment
• Centre-channel processing
• Surround processing
• Factory subwoofer integration
• Volume-dependent processing
• Active Noise Control
• Vehicle-network communication

The Focal Plug & Play speakers listed within the Lexus category are not designed as direct replacements for factory-amplified Mark Levinson systems.

Installing conventional 4-ohm speakers without testing could result in:

• Reduced output
• Incorrect tonal balance
• Loss of bass or treble
• Altered crossover behaviour
• Poor integration with retained speakers
• Excessive factory-amplifier loading
• Fault conditions
• Unexpected volume differences
• Loss of surround balance
• Active Noise Control problems

A professionally designed Mark Levinson upgrade may require:

• Measuring every relevant factory channel
• Identifying speaker impedance
• Locating the factory amplifier
• Retaining selected original speakers
• Combining selected factory signals
• Using an integration-compatible DSP
• Adding suitable aftermarket amplification
• Rebuilding the front soundstage
• Integrating a separate subwoofer
• Disabling or recalibrating selected factory processing where appropriate
• Performing complete acoustic measurement and tuning

Some Mark Levinson vehicles may be better suited to a carefully staged upgrade than complete speaker replacement.

The system should be assessed by an installer experienced with factory-amplified Lexus audio before any products are ordered.

6. Can a faulty Lexus factory speaker be replaced with a Focal speaker?

Potentially, yes, but the fault should be diagnosed before replacement products are selected.

Common symptoms include:

• No sound from one speaker
• Buzzing
• Rattling
• Crackling
• Distortion
• Weak bass
• Missing treble
• Uneven volume
• Intermittent audio
• One side sounding quieter
• Sound cutting out
• Distortion at particular frequencies
• Vibration from a door or dashboard panel

These symptoms do not automatically prove that the speaker itself has failed.

Possible causes include:

• Damaged speaker cone
• Failed voice coil
• Deteriorated speaker surround
• Loose speaker mounting
• Moisture damage
• Corroded connector
• Damaged door wiring
• Faulty factory amplifier
• Failed amplifier channel
• Infotainment fault
• Software fault
• Incorrect balance or fade settings
• Low 12-volt battery voltage
• Loose interior trim
• Active Noise Control fault
• Previous installation damage

The installer should test:

• Speaker resistance
• Wiring continuity
• Connector condition
• Signal polarity
• Factory output
• Frequency content
• Channel allocation
• Speaker mounting
• Interior-panel vibration
• Factory amplifier operation
• Vehicle start-up and shutdown behaviour

When a conventional front or rear speaker has failed, replacing the pair may provide a more balanced result.

Replacing only one side can create differences in:

• Sensitivity
• Impedance
• Output level
• Frequency response
• Tonal character
• Power handling
• Stereo imaging

Additional analysis is required when the faulty component is part of a Mark Levinson or other factory-amplified system.

7. Why is Lexus speaker fitment more involved than matching the diameter?

A speaker’s advertised diameter provides only part of the information required for correct installation.

Physical compatibility may also depend on:

• Speaker basket shape
• Mounting-hole pattern
• Installation depth
• Magnet diameter
• Window clearance
• Door-lock clearance
• Factory grille clearance
• Required mounting adaptor
• Spacer thickness
• Tweeter position
• Tweeter bracket
• Connector type
• Wiring polarity
• Door-card clearance
• Moisture protection
• Factory sealing

Electrical compatibility may depend on:

• Factory speaker impedance
• Speaker sensitivity
• Factory amplifier power
• Active crossover frequency
• Available signal bandwidth
• Factory equalisation
• Channel allocation
• Start-up and shutdown behaviour
• Factory fault monitoring
• Active Noise Control

Some Lexus applications listed by Focal Australia require tweeter-plug or bracket adaptation.

Any mounting adaptor should be:

• Rigid
• Securely mounted
• Correctly sealed
• Moisture resistant
• Resistant to vibration
• Suitable for automotive temperatures
• Designed to retain the factory grille
• Compatible with the original door trim

Speaker wiring must be kept away from:

• Window glass
• Window regulators
• Door locks
• Sharp metal edges
• Moving seat components
• Side airbags
• Pressure sensors
• Water drainage paths
• High-voltage equipment
• Vehicle-control modules

A speaker that physically fits but is poorly sealed to the mounting surface may lose a substantial amount of mid-bass performance.

Rigid mounting, correct acoustic sealing and polarity verification can be as important as the speaker itself.

8. Which Focal speaker range is best for a Lexus?

The correct Focal range depends on the exact Lexus, factory audio system, available installation space, amplification and owner’s expectations.

Focal Inside Toyota-Platform Speakers

Products such as IS TOY 170, IS TOY 690, IS TOY 165 and IC TOY 165 may suit selected compatible Lexus vehicles with non-amplified factory audio.

These products should only be recommended after exact compatibility has been confirmed.

Auditor

Auditor may suit an accessible tailored replacement for basic, worn or damaged factory speakers where a direct Focal Inside solution is unavailable.

Universal

Focal Universal products offer flexible and shallow-fitment options for vehicles with restricted installation depth.

Access

Access speakers provide dynamic and engaging performance for everyday systems.

Slatefiber

Slatefiber provides increased control, detail and dynamics for owners seeking a more refined installation.

Flax Evo

Flax Evo may suit a premium Lexus installation where natural midrange, tonal balance and musical detail are priorities.

K2 Power

K2 Power is suitable for high-performance systems requiring strong dynamics, precision and increased power handling.

K2 Power M

K2 Power M provides modular options for advanced multi-channel and custom-designed systems.

Utopia M

Utopia M is intended for uncompromising installations where the amplification, mounting, acoustic treatment and DSP tuning are designed around the speakers.

The most expensive speaker is not automatically the best choice for every Lexus.

Product selection must consider:

• Factory speaker impedance
• Factory amplifier
• Available installation depth
• Original source signal
• Aftermarket amplifier power
• Required listening volume
• Cabin noise
• Preferred music
• Number of listening positions
• Installation complexity
• Available budget

Premium Focal speakers require suitable amplification, rigid mounting and professional tuning to deliver their intended performance.

9. Does the quiet Lexus cabin make audio upgrades more noticeable?

Often, yes.

Lexus places considerable emphasis on cabin refinement, vibration control and reduced noise. A quieter interior can make fine musical detail easier to hear, particularly at moderate volume.

It can also make weaknesses in the factory system more noticeable.

These may include:

• Harsh or recessed treble
• Weak mid-bass
• Poor vocal focus
• Uneven tonal balance
• Limited bass extension
• Door resonance
• Dashboard vibration
• Amplifier hiss
• Poor integration between speakers
• Excessive centre-channel output
• An overly narrow or diffuse soundstage

At motorway speeds, the cabin may still experience:

• Tyre noise
• Wind noise
• Road-surface noise
• Suspension noise
• Body-panel resonance
• Interior trim vibration

Hybrid and electric Lexus vehicles may produce less conventional engine noise during some driving conditions, making tyre and wind noise relatively more apparent.

The upgrade should be designed around:

• Normal listening volume
• Typical driving speed
• Road surfaces
• Driver and passenger positions
• Factory cabin acoustics
• Speaker locations
• Available amplifier power
• Desired bass output

For many Lexus owners, improved clarity, tonal balance and imaging at sensible volume will be more valuable than extreme maximum output.

10. Are special precautions required for hybrid, plug-in hybrid and electric Lexus vehicles?

Yes.

The Lexus range includes petrol, diesel, hybrid, plug-in hybrid and battery-electric vehicles.

Electrified models may contain:

• High-voltage traction battery
• Orange high-voltage cables
• Electric-drive motors
• Inverters
• Power electronics
• Charging equipment
• Battery-management system
• Battery cooling
• DC-to-DC converter
• Regenerative-braking components
• High-voltage service disconnect

Aftermarket audio equipment must not be connected directly to the high-voltage traction battery.

The installer must identify:

• Approved low-voltage power source
• Available low-voltage current
• DC-to-DC converter capacity
• Suitable earthing point
• Vehicle sleep behaviour
• Start-up and shutdown sequence
• Acceptable standby current
• Safe cable routes
• Restricted installation areas

High-voltage cables must not be:

• Cut
• Spliced
• Re-routed
• Drilled near
• Used as mounting supports
• Cable-tied to
• Probed as an audio power source

Audio equipment must not obstruct:

• Battery ventilation
• Battery cooling
• High-voltage service access
• Charging components
• Power electronics
• Emergency isolation equipment
• Manufacturer warning labels
• Vehicle identification labels

A battery-electric Lexus such as the RZ or new ES should be tested during:

• Vehicle start-up
• Vehicle shutdown
• Normal electric driving
• Regenerative braking
• AC charging
• DC charging
• Vehicle sleep mode
• Vehicle restart

A hybrid or plug-in hybrid should also be tested during:

• Electric-only operation
• Petrol-engine start-up
• Petrol-engine operation
• Engine shutdown
• Transitions between operating modes

The installer should check for switching noise, charging-system noise, amplifier turn-on noise, shutdown noise, radio-frequency interference and unexpected low-voltage battery drain.

11. Can the original Lexus infotainment and vehicle functions be retained?

In most Lexus installations, retaining the original infotainment system is the preferred approach.

Depending on the model, the factory system may manage:

• Radio
• DAB digital radio
• Bluetooth
• Telephone calls
• Apple CarPlay
• Android Auto
• Factory microphone
• Navigation
• Steering-wheel controls
• Reversing camera
• Panoramic-view camera
• Parking information
• Climate controls
• Vehicle settings
• Driver-assistance settings
• Hybrid or charging information
• Energy-use information
• Audible warnings
• Connected vehicle functions
• Software updates

Replacing the factory infotainment system may affect functions unrelated to music.

A suitable amplifier, DSP or signal interface may allow the audio system to be improved downstream from the original source.

Before installation, the dealer should test:

• Speaker-level outputs
• Output voltage
• Frequency response
• Factory equalisation
• Signal polarity
• Available full-range channels
• Volume behaviour
• Balance and fade
• Telephone-audio routing
• Navigation-prompt routing
• Parking-warning routing
• Vehicle-alert routing
• Start-up behaviour
• Shutdown behaviour
• Vehicle sleep behaviour

After installation, the dealer should confirm:

• Radio and media operation
• Bluetooth audio
• Telephone calls
• Factory microphone
• Apple CarPlay
• Android Auto
• Navigation prompts
• Steering-wheel controls
• Camera operation
• Parking information
• Vehicle settings
• Driver-assistance warnings
• Hybrid or charging information
• Amplifier start-up
• Amplifier shutdown
• Acceptable standby current

Retaining the factory source does not mean the audio performance must remain factory standard.

12. Does a Lexus speaker upgrade require an amplifier or DSP?

Not every compatible Lexus speaker upgrade requires both.

Efficient and electrically compatible Focal Inside speakers may provide a worthwhile improvement when powered from a suitable non-amplified factory source.

This may suit an owner seeking:

• Clearer vocals
• Improved treble detail
• Better tonal balance
• Stronger mid-bass
• Cleaner moderate-volume performance
• Replacement of worn or damaged speakers

A factory source normally has limited clean power.

An aftermarket amplifier may provide:

• Greater clean volume
• Improved speaker control
• Stronger dynamics
• Better mid-bass
• Reduced distortion
• Increased headroom
• Power for a subwoofer
• Better performance against road and tyre noise

The amplifier must be selected according to:

• Speaker impedance
• Required RMS power
• Available source signal
• Number of channels
• Low-voltage electrical capacity
• Mounting location
• Cooling requirements
• Earthing
• Vehicle sleep behaviour
• Hybrid or electric-vehicle requirements

A DSP can allow the installer to:

• Measure and correct the factory signal
• Set crossover frequencies
• Balance individual speakers
• Apply corrective equalisation
• Adjust time alignment
• Improve stereo imaging
• Integrate a subwoofer
• Manage centre and surround channels
• Tune primarily for the driver
• Create alternative tuning presets

DSP may be particularly valuable when:

• Factory equalisation is substantial
• Different outputs receive different frequency ranges
• The vehicle has factory amplification
• A subwoofer is being added
• Premium Focal speakers are selected
• A multi-channel amplifier is installed
• The owner wants a carefully tuned soundstage

A DSP cannot recreate frequency information that is completely absent from its input. The available factory signals must therefore be measured before the system is designed.

13. Can a subwoofer be added without compromising Lexus practicality?

In many Lexus vehicles, potentially yes.

A properly integrated subwoofer can provide:

• Deeper bass
• Greater low-frequency impact
• Better bass control
• Reduced demand on door speakers
• Cleaner moderate-volume performance
• Fuller and more balanced sound

Potential Focal bass solutions include:

• ISUB ACTIVE
• ISUB ACTIVE 2.1
• ISUB TWIN
• Specialised Subwoofers
• Compact sealed enclosures
• Under-seat installations
• Cargo-area side enclosures
• Removable enclosures
• Custom vehicle-specific enclosures

The correct solution depends on:

• Lexus model
• Available clearance
• Seat adjustment
• Rear-passenger space
• Factory audio system
• Available source signal
• Required bass output
• Low-voltage electrical capacity
• Cargo requirements
• Hybrid or electric battery location
• High-voltage equipment
• Existing factory subwoofer
• Vehicle service access

Apparently unused space may contain:

• Seat mechanisms
• Airbag wiring
• Floor contours
• Ventilation ducts
• Factory electronics
• Vehicle-control modules
• Battery equipment
• High-voltage components
• Service access points

The installation should preserve:

• Cargo volume
• Folding rear seats
• Cargo tie-down points
• Charging-cable storage
• Battery service access
• Emergency equipment
• Vehicle ventilation
• Rear-passenger comfort

Correct crossover frequency, polarity, phase, level and signal delay are essential.

Poor integration can make a subwoofer sound disconnected from the front speakers or create cancellation that reduces bass at the listening position.

Any enclosure must be securely restrained.

14. Can Focal BAM acoustic treatment improve a Lexus?

Strategically installed Focal BAM acoustic treatment may provide a worthwhile improvement.

A Lexus may experience:

• Tyre noise
• Road noise
• Wind noise
• Door-panel resonance
• Dashboard vibration
• Cargo-area resonance
• Interior trim vibration
• Speaker energy escaping through metal panels
• Reduced mid-bass performance
• Rattles at particular bass frequencies

Focal BAM treatment may help:

• Strengthen the speaker mounting environment
• Reduce door-panel resonance
• Reduce sound escaping through the outer door structure
• Improve mid-bass response
• Reduce selected rattles
• Reduce selected road and tyre noise
• Improve clarity at motorway speeds
• Create a more controlled acoustic environment

Potential treatment areas include:

• Front doors
• Rear doors
• Speaker mounting surfaces
• Outer door panels
• Rear quarter panels
• Cargo-area side panels
• Boot or tailgate
• Selected floor areas
• Loose trim interfaces

Treatment must not interfere with:

• Door drainage
• Window mechanisms
• Door locks
• Wiring
• Side airbags
• Pressure sensors
• Seat-belt mechanisms
• Cabin ventilation
• Battery ventilation
• High-voltage equipment
• Vehicle-control modules
• Manufacturer service access
• Identification and warning labels

Acoustic treatment should be applied strategically.

Covering every available surface can add unnecessary weight and cost without delivering a proportionate improvement.

The best result normally comes from treating the speaker mounting environment, large resonant panels and particular trim interfaces responsible for rattles.

BAM treatment will not make a Lexus completely silent. Its purpose is to improve the speaker environment and reduce selected resonance, vibration and sound transmission.

15. How do I confirm Lexus compatibility, and what will the upgrade cost?

Begin by collecting the vehicle’s complete information.

Provide the dealer with:

• Exact Lexus model
• Production month and year
• Vehicle Identification Number
• Model generation
• Equipment grade
• Petrol, diesel, hybrid, plug-in hybrid or battery-electric drivetrain
• Factory infotainment system
• Number and location of speakers
• Standard, Panasonic, Mark Levinson or other factory audio
• Existing factory amplifier
• Factory subwoofer
• Previous audio modifications
• Relevant vehicle software version
• Preferred listening position
• Cargo and storage requirements
• Desired performance
• Available budget

Physical compatibility can be affected by:

• Speaker diameter
• Basket shape
• Mounting-hole pattern
• Magnet diameter
• Installation depth
• Factory connector
• Grille clearance
• Window clearance
• Door-mechanism clearance
• Tweeter position
• Tweeter bracket
• Required mounting adaptor
• Required spacer thickness
• Moisture protection

Electrical and acoustic compatibility can be affected by:

• Factory speaker impedance
• Source-system output
• Factory amplifier
• Active frequency filtering
• Factory equalisation
• Signal polarity
• Available full-range signals
• Centre and surround processing
• Active Noise Control
• Telephone-audio routing
• Navigation-prompt routing
• Warning-sound routing
• Factory-subwoofer integration
• Vehicle sleep and wake behaviour
• Hybrid or electric architecture
• Low-voltage electrical capacity

The cost depends on:

• Exact vehicle
• Factory audio configuration
• Focal speaker range selected
• Number of speakers
• Custom mounting adaptors
• Connector adaptation
• Tweeter installation
• Acoustic treatment
• Amplifier installation
• DSP integration
• Subwoofer selection
• Interior disassembly
• Custom fabrication
• Hybrid or electric-vehicle precautions
• Final measurement and tuning

Replacing compatible front and rear speakers in a selected non-amplified Lexus may be considerably less complex than integrating Focal speakers, amplification, DSP and a subwoofer into a 21-speaker or 23-speaker Mark Levinson system.

It would be misleading to provide one standard Lexus audio-upgrade price without identifying and inspecting the exact vehicle.

The products displayed throughout the Focal Australia website are starting points for professional system design. They do not replace vehicle-specific compatibility confirmation.

Upgrade Your Lexus with Focal Sound

Whether you drive a Lexus LBX, UX, NX, RZ, RX, GX, LX, ES, IS, LS, LC, LM or an earlier CT, GS or RC, there may be a professionally designed Focal audio upgrade available.

Selected non-amplified Lexus vehicles may use compatible Focal Inside Toyota-platform speakers, harnesses, amplification and compact subwoofers.

These products should not be represented as compatible with every Lexus.

They are not designed as direct Plug & Play replacements for factory-amplified or premium Lexus systems, including Mark Levinson configurations.

Where a verified Focal Inside application is unavailable, an Authorised Focal Australia Dealer may create a tailored Lexus system using suitable products from ranges including:

• Auditor
• Universal
• Access
• Slatefiber
• Flax Evo
• K2 Power
• K2 Power M
• Utopia M
• Focal amplifiers
• Focal DSP solutions
• Focal subwoofers
• Focal BAM acoustic treatment

Particular care is required with:

• Mark Levinson audio
• Panasonic audio
• Other factory-amplified systems
• Active factory crossovers
• Centre and surround processing
• Active Noise Control
• Hybrid and plug-in hybrid vehicles
• High-voltage electric vehicles
• Low-voltage power management
• Vehicle sleep behaviour
• Battery ventilation
• Charging-system interference
• Software-dependent vehicle functions

A correctly designed and professionally installed Focal system can provide stronger mid-bass, clearer vocals, improved stereo imaging, deeper bass and cleaner performance while retaining the original infotainment, controls, cameras, telephone functions and audible vehicle warnings.

For professional advice, compatibility confirmation and installation, contact an Authorised Focal Australia Dealer.

All vehicle manufacturer names, vehicle model names and other brand references appearing on this website are used solely for identification, informational and compatibility purposes, including to assist consumers in identifying Focal aftermarket audio products that may be suitable for their vehicle.

Focal products displayed within vehicle-specific pages are aftermarket audio products and are not represented original equipment manufacturer (OEM) parts unless expressly stated otherwise.

References to vehicle manufacturers, makes and models are intended only to describe the application, compatibility or intended use of the relevant Focal aftermarket product and should not be interpreted as indicating any commercial relationship, partnership, sponsorship or endorsement by the referenced vehicle manufacturer.

Vehicle compatibility may vary according to model year, vehicle specification, factory audio system, equipment level and market configuration. Compatibility information should therefore be used as a guide, and customers should consult an Authorised Focal Australia Dealer to confirm suitability before purchasing or installing any aftermarket Focal product.