Mercedes C Class W206 Speaker Upgrade Package | HELIX Ci3 103311

Factory speakers can leave voices difficult to follow and bass short of weight. This Soundtech package brings together the listed components for Mercedes C Class W206 Basic Sound. Choose by the chassis and installed sound system, not the badge alone.

What this upgrade addresses

• A defined component list, so speakers, wiring and mounting parts can be planned together.
• Replacement speakers for the positions described in the package, without treating a similar looking driver as interchangeable.

Component specifications

HELIX Ci3 K100.2FM-S3 MK2

Tweeter: 32.0 mm / 1.26” Midrange: 98.0 mm / 3.86”

Tweeter: 32.0 mm / 1.26” Midrange: 89.0 mm / 3.50”

Tweeter: 9.8 mm / 0.39” Midrange: 30.0 mm / 1.18”

103.3 x 50.4 x 25.0 mm / 4.07 x 1.98 x 0.98”

Voice coil winding height

Ultra compact, aluminum dome, neodymium magnet and FlexMount20

Paper with Cenosphere coating, FlexConnect terminal, neodymium magnet and FlexMount100

Tweeter: 12 dB highpass, protection and level adjustment

HELIX Ci3 C100.2FM-S3 MK2

Voice coil winding height

Paper with Cenosphere coating, FlexConnect terminal, neodymium magnet and FlexMount100

HELIX CWK MB.FX-550C

HELIX FlexMount CFMK20 MB.1

HELIX FlexMount CFMK100 MB.1

Fitment and exclusions

Not for Burmester, Bose, Harman Kardon or another factory amplified system unless it is explicitly the system named in this package.

The chassis and body listed above only. Other body styles and later chassis generations are not included in this application.

What is in the box

Installation and setup

Professional installation is recommended. Check the vehicle build, factory amplifier, connectors and mounting positions before work starts. Minor modifications may be needed depending on the exact year and trim. Installation and tuning are not included in the package price. Where a DSP amplifier is listed, set the crossovers, levels and routing for the actual speakers and test music, calls, navigation prompts and warning sounds.

Warranty

Australian Consumer Law rights apply. Confirm the warranty for the selected components when arranging the installation.

Frequently asked questions

Which components are included?

HELIX Ci3 K100.2FM-S3 MK2 (quantity 1), HELIX Ci3 C100.2FM-S3 MK2 (quantity 1), HELIX CWK MB.FX-550C (quantity 1). The package table lists the remaining selected items and quantities.

Which vehicle and factory system is this for?

Mercedes C Class W206 sedan, 2021 onwards, W206 chassis only. Required factory system: Basic Sound. Other chassis, bodies and factory systems are not included.

How does the amplifier connect?

No new amplifier is listed in this package. It is a speaker upgrade for the stated factory system.

Is a DSP amplifier included?

No DSP amplifier appears in the captured package item list. Any change to amplification needs to be assessed separately against the speakers and factory system.

Are installation and tuning included?

No. The price covers the listed products. Installation and any DSP tuning are arranged separately. Minor modifications may be needed depending on the exact year and trim.

What should be checked before replacing the speakers?

Check the stated impedance, installation depth, cutout and connectors for HELIX Ci3 K100.2FM-S3 MK2. Use the selected adapters where listed. A nominal speaker diameter or a similar grille is not enough to establish fitment.