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InCarTec Products > SPEAKERS

BLAM Relax BM100FC 4" (100mm) Coaxial Speaker Kit | BMW & MINI

BL-BM100FC
Price: £108.33 (£130.00 inc VAT)
Shipping Restriction: This product can only be shipped to: UK (Mainland), UK (Scottish Highlands and Islands), UK (Northern Ireland), UK (Isle of Wight), UK (Isle of Man), Ireland

The BLAM BM100FC is a 4" (100mm) coaxial speaker kit designed specifically for BMW and MINI vehicles. Featuring fiberglass-reinforced baskets, soft-dome tweeters, and built-in high-pass filters, it delivers 50W RMS clean audio with 90.3dB sensitivity. Rated up to 100W max, with a 2Ohm impedance and wide 80Hz–30kHz frequency response—delivering full-range clarity with original connectors and a perfect plug-and-play fit. Supplied in the UK by InCarTec.

BLAM Relax BM100FC 4″ (100mm) Coaxial Speaker Kit | BMW & MINI

The BM 100 FC is a high-fidelity, plug-and-play upgrade made for BMW & MINI doors with constrained mounting depth. Each kit includes two 100 mm woofers and coaxially mounted 20 mm soft-dome tweeters, equipped with integrated 6 dB/octave high-pass filters to protect the tweeters and optimize midrange clarity.

With a peak power of 100 W and 50 W RMS, the BM 100 FC delivers clear and authoritative sound. Operating from 80 Hz to 30 kHz at 2 Ω, and with 90.3 dB sensitivity, these speakers extract excellent performance from standard BMW/MINI audio systems Constructed in France, each speaker features a fiberglass-reinforced composite basket with an OEM BMW dual-plug connector, cellulose pulp cone, butyl surround, Conex spider, 25 mm Kapton voice coil, 70×15 mm ferrite motor, and a solid 4 mm magnetic circuit.

Plug‑and‑play for BMW & MINI, this kit ensures a fast, secure installation that preserves the original wiring and fitment. Supplied iby InCarTec, the official UK distributor of BLAM Audio.


BM100FC Product features

  • 100 mm (4″) coaxial BMW/MINI speakers
  • 50 W RMS / 100 W peak power
  • Frequency response: 80 Hz – 30 kHz
  • 90.3 dB sensitivity | 2 Ω impedance
  • 20 mm soft-dome tweeter with built-in crossover
  • Fiberglass-reinforced composite basket
  • OEM BMW dual-plug connector
  • Durable pulp cone, butyl surround & Conex spider
  • 25 mm Kapton coil, ferrite motor, 4 mm magnetic circuit
  • Sold as a pair with user manual


BM100FC Technical Specifications

  • This kit consists of two 100 mm BMW plug & play woofers, two 20 mm coaxial soft dome tweeters, and two integrated 6 dB/octave high-pass filters.
  • 100 mm Woofer
  • Maximum Power 100 W / Nominal Power 50 W
  • Frequency Response 80 Hz / 30 kHz
  • Sensitivity 90.3 dB – Impedance 2 Ω
  • Original BLAM basket made of fiberglass-reinforced composite with dual BMW Plug & Play connector
  • High-quality treated cellulose pulp cone
  • Butyl surround
  • Long-life “Conex” spider
  • 25 mm voice coil on Kapton mount
  • 70 x 15 mm ferrite motor
  • Thick magnetic circuit (4 mm)
  • Supplied accessories:
  • User manual


BM100FC Dimensions

    Are 10cm/ 4 inch speakers good for my vehicle?

    4-inch or 10cm speakers are a compact audio solution that delivers impressive sound quality in a small package. Ideal replacements in popular smaller 3-door cars like the Vauxhall Corsa D and select Alfa Romeo, Fiat, and BMW, these lightweight speakers can easily be installed in rear doors, ensuring an unobtrusive fit. Despite their size, they produce powerful and immersive audio, making them perfect for music lovers who seek clarity without the bulk of larger equipment. Whether you're upgrading your vehicle's sound system or simply looking to reduce the size of your car audio set up, 4-inch speakers provide a remarkable audio experience that doesn’t compromise on performance.


    What size speakers are in my car? 

    If your unsure what speakers fit your car we would recommend using our market-leading Search By Car feature

    Brand: BLAM

    Car models: The years stated refer to the model's years of manufacture, please check the item description for information about any changes there may be within these productions years.
    BMW - 1 series (E81/E82/E87/E88) (2004 - 2010 )
    BMW - 3 series (E90/E91/E92/E93) (2006 - 2011)
    BMW - 3 Series (F30/F31/F34) (2012 - 2019)
    BMW - 5 Series (E60) (E61)* (2004 - 2010 )
    BMW - 5 Series (F10/F11)* (2010 - 2016)
    BMW - Z4 (E89)* (2009 - 2016)
    Mini - Clubman 1st Gen (R55) (2007 - 2014)
    Mini - Clubman 2nd Gen (F54) (2015 >)
    Mini - Countryman & Paceman (R60, R61) (2010 - 2016)
    Mini - Countryman 2nd Gen (F60) (2017 >)
    Mini - Hatch & Convertible 3rd Gen (F55, F56, F57) (2014 >)
    Mini - Hatch & Convertible, 2nd Gen (R56, R57) (2006 - 2015)
    Mini - Mini Coupe & Roadster (R58, R59) (2011 - 2015)

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