Pack Summary
The BMW 1 Series 5.2 Pack is a vehicle-specific Focal Inside audio upgrade developed for compatible BMW 1 Series vehicles manufactured between 2007 and 2024.
The package combines four IC BMW 100L coaxial speakers, one ICC BMW 100 centre-channel speaker and a pair of ISUB BMW under-seat woofers. Together, these components upgrade five compatible cabin-speaker locations and the two factory woofer locations beneath the front seats.
Because the BMW 1 Series range covers several vehicle generations, body styles and factory audio systems, the final component configuration must be confirmed for the individual vehicle. In particular, the centre-channel location and correct under-seat woofer impedance must be checked before installation.
The original BMW head unit, controls and integrated vehicle functions remain in place. Once installed, the Focal speakers are concealed behind the vehicle’s factory trims and grilles, preserving the original appearance of the interior.
Pack Description
Improve the sound system in your BMW 1 Series with a carefully selected combination of Focal Inside speakers and vehicle-specific under-seat woofers.
BMW audio systems are closely integrated with the vehicle’s electronics, dashboard and interior design. While the original system provides convenient control and a clean factory appearance, its overall performance can be restricted by the materials and acoustic capability of the original speakers.
The BMW 1 Series 5.2 Pack replaces compatible factory speakers with Focal components engineered for BMW mounting locations.
Two IC BMW 100L kits provide four 100mm coaxial speakers for compatible front and rear positions. Each speaker combines a Focal Polyglass cone with an integrated aluminium/magnesium inverted-dome tweeter. This provides clearer vocals, improved musical detail and better high-frequency reproduction without requiring separate visible tweeter installations.
The ICC BMW 100 replaces the dashboard centre-channel speaker where a compatible factory position is present. It helps anchor vocals and centrally positioned musical information across the dashboard, creating a more stable and focused front sound stage.
Beneath the front seats, the original BMW woofers are replaced by a suitable pair of ISUB BMW woofers. These provide stronger bass, better mid-bass definition and improved control while using the original under-seat locations.
Why Upgrade the BMW Factory Audio System?
The original BMW audio system may be well integrated with the vehicle, but factory speakers can limit clarity, bass performance and musical detail.
Vocals can sound recessed, instruments can blend together and higher frequencies may lack definition. The original under-seat woofers may also struggle to reproduce bass with the depth, control and impact expected from a premium listening experience.
Replacing the compatible factory speakers with Focal Inside components allows the original BMW electronics to reproduce music through higher-quality cones, tweeters and motor assemblies.
The upgrade can provide:
- Clearer vocals and spoken audio
- Improved instrument separation
- More natural midrange reproduction
- Greater high-frequency detail
- Stronger and tighter bass
- Improved mid-bass impact
- Better front sound-stage focus
- More stable centre imaging where the centre speaker is fitted
- Improved rear-passenger listening quality
- More consistent sound distribution throughout the cabin
- Reduced distortion at higher listening levels
- Retention of the original BMW electronics and vehicle functions
- Completely hidden OEM-style integration
IC BMW 100L Coaxial Speakers
The package includes two IC BMW 100L kits, providing four coaxial speakers for compatible front and rear locations.
Each speaker incorporates its woofer and tweeter into a single compact assembly. This allows both the midrange and high-frequency sections to be upgraded from the original BMW speaker position.
The IC BMW 100L speakers improve:
- Vocal clarity
- Musical detail
- Midrange definition
- High-frequency extension
- Instrument separation
- Sound dispersion
- Rear-passenger listening quality
- Front-to-rear tonal consistency
Using matching Focal speakers across the four principal cabin locations helps create a more consistent tonal character throughout the vehicle.
ICC BMW 100 Centre-Channel Speaker
The ICC BMW 100 is designed to replace the factory dashboard centre-channel speaker in compatible BMW vehicles.
Its position in the centre of the dashboard helps improve:
- Vocal positioning
- Dialogue and spoken-audio clarity
- Centre-image stability
- Front sound-stage focus
- Sound distribution across the dashboard
- Listening consistency between the driver and front passenger
Not every BMW 1 Series covered by the 2007–2024 date range has a compatible factory centre-channel position. The dashboard speaker configuration must therefore be inspected before installation.
Where no suitable centre-channel location is fitted, the ICC BMW 100 should be omitted and the package adjusted to suit the vehicle.
ISUB BMW Under-Seat Woofers
BMW uses shallow woofers beneath the front seats in many of its factory audio systems. This arrangement provides bass and lower-midrange output without occupying luggage space or requiring a visible enclosure in the boot.
The Focal ISUB BMW woofers replace compatible factory units and improve:
- Bass depth
- Bass definition
- Mid-bass weight
- Lower-midrange clarity
- Percussion impact
- Dynamic performance
- Control at higher listening levels
- Integration between the bass and cabin speakers
Three impedance versions are available:
- ISUB BMW 2 for compatible 2-ohm applications
- ISUB BMW 4 for compatible 4-ohm applications
- ISUB BMW 8 for compatible 8-ohm applications
These versions are not performance levels or optional additions. The correct version must be matched to the vehicle’s original audio system and amplifier requirements.
Focal Polyglass Cone Technology
The IC BMW 100L and ICC BMW 100 speakers use Focal Polyglass cone technology.
Microscopic glass beads are applied to the surface of a cellulose-pulp cone. This construction combines the natural damping qualities of paper with greater cone rigidity.
The benefits include:
- Natural vocal reproduction
- Improved midrange definition
- Greater musical detail
- Better transient response
- Reduced unwanted colouration
- Improved control at higher listening levels
- More realistic instrument reproduction
Polyglass technology helps the upgraded speakers deliver a detailed and balanced sound while operating from compatible factory BMW electronics.
Installation and Compatibility Notes
The BMW 1 Series was produced across several generations and with a variety of Stereo, Hi-Fi and premium factory audio systems. Speaker locations, mounting requirements and electrical specifications can therefore differ considerably.
Before ordering or installation:
- Confirm the exact vehicle model and chassis code
- Confirm the vehicle’s production date
- Identify the original BMW audio system
- Check whether a compatible dashboard centre speaker is present
- Confirm the original under-seat woofer impedance
- Select only the corresponding ISUB BMW version
- Check the front and rear speaker mounting locations
- Determine whether additional adaptors or installation accessories are required
The original BMW head unit and integrated controls are retained. An aftermarket amplifier is not included, although additional amplification may provide a further improvement where higher output and greater speaker control are required.
Professional installation by an Authorised Focal Australia Dealer is strongly recommended.
Recommended For
The BMW 1 Series 5.2 Pack is recommended for owners who want a substantial improvement over the compatible factory speakers while retaining the vehicle’s original controls and interior appearance.
It is particularly suitable for:
- BMW 1 Series owners wanting a vehicle-specific audio upgrade
- Drivers who find the factory system lacks clarity or detail
- Owners wanting stronger and better-controlled bass
- Listeners wanting clearer vocals and improved instrument separation
- Drivers seeking a more focused front sound stage
- Owners wanting to retain the original BMW head unit
- Customers who do not want visible aftermarket speakers
- Daily-driven vehicles
- Touring and long-distance vehicles
- Owners seeking a clean OEM-style installation
