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  5. BM45C-II

BM45C-II

30 Watt

BM45C-II

Technical Highlights

  • 2-way kit, three-dimensional sound stage.
  • Neodymium magnet, paper cone, frequency range 90-15000Hz.
  • Impedance 4 Ohm, efficiency 88dB 1W/1m.
  • More technical details
€230.00
€230.00 €230.00
2% discount with credit card

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ProductBM45C-II

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Every product purchased from Masori includes an additional year of warranty in the third year after purchase (months 25–36). We cover repair or replacement free of charge for covered warranty claims. Automatic and free – exclusively for Masori customers. Your statutory rights remain unaffected.

Warranty terms
StegDRC
Steg-DRC-DSP-Zubehör-masori-kaufen
Axton-ATS ISO8BASIC-DSP-Zubehör-masori-kaufen
AxtonATS ISO8BASIC
Steg-BM45C-II-BMW-Lautsprecherset-masori-kaufen
€230.00
€230.00 €230.00

Discover the BM45C-II speaker set from Steg - specially developed for BMW and MINI. This two-way kit revolutionizes your sound with a three-dimensional soundstage and brings essential sound accuracy to your vehicle. Whether you drive a F-series, G-series, E-series BMW, or a Mini F-series - the BM45C-II kit fits perfectly and delivers an unparalleled natural sound. From the water-repellent paper membrane to the titanium silk dome tweeter - every detail in this set has been optimized to create an expanded sound image and an intense listening experience. With the BM45C-II speaker set from Steg, your next car ride is a true sound experience.

Features
  • 2-Way Bridge Speaker Set for BMW and MINI
    • for F series 1, 2, 3, 4 from approx. year of manufacture 2004
    • for G series all 3 series, 4 series, 5 series, 6 series, 7 series, i8 and X
    • "for E-Series must be minimally adjusted"
    • for Mini F54, F55, F56, F57, F60
  • The set includes:
    • 2 pcs. tweeters (25 mm)
    • 2 pcs. midrange drivers (100 mm) with neodymium magnet
    • 2 pcs. frequency crossovers
    • Plug&Play cable set
    • tweeter recordings

Technical specifications of the midrange driver

  • Neodymium magnet
  • paper membrane
  • Resonance frequency fs=75Hz,
  • Impedance 4 Ohm
  • Efficiency 88dB 1W/1m
  • Maximum Power: 30 W
  • Frequency Range: 90-15000Hz
  • Qms: 2.34
  • Qes: 0.30
  • Qts: 0.26
  • Mms: 6.95G
  • Vas: 4.97 L
  • Weight: 0.38 KG
  • Mounting Depth: 36.0 MM
  • Mounting Diameter: 98.0 MM

Frequently Asked Questions about BM45C-II

Wie passt das BM45C-II Lautsprecherset in meinen BMW?

The BM45C-II speaker set from STEG is precisely optimized for the BMW F-series, G-series, and E-series. For the F-series, it fits perfectly in models such as the 1 Series, 2 Series, 3 Series, and 4 Series from the year 2004 onwards. In the G-series, it covers all 3 Series, 4 Series, 5 Series, 6 Series, 7 Series models, as well as the BMW i8 and the X-series. The installations in E-series models require minimal adjustments. Engineers who place great value on sound precision benefit from a harmonious adaptation of the set. With a mounting depth of 36 mm and a mounting diameter of 98 mm, near seamless compatibility is ensured.

Welche Thiele Small Parameter hat der BM45C-II Mitteltöner?

The BM45C-II midrange driver from STEG features specific Thiele Small parameters that enable detailed sound reproduction. The efficiency is 88 dB 1W/1m and the impedance is 4 Ohms. The resonance frequency is at 75 Hz, which supports clear and precise bass reproduction. Other relevant parameters include Qms at 2.34 and Qes at 0.30, while the Qts value is at 0.26. The mechanical movement behavior is determined by Mms of 6.95g, and the equivalent volume Vas is 4.97L. These parameters are crucial for optimized performance in the vehicle.

Welche Komponenten sind im BM45C-II Lautsprecherset enthalten?

The BM45C-II speaker set includes several essential components that support a wide sound spectrum. It features two tweeters with a diameter of 25 mm, which provide brilliant highs. The mid frequencies are handled by two 100 mm midrange drivers with powerful neodymium magnets. Additionally, two crossovers are included, allowing for seamless tuning and integration of the speakers. To ensure quick and easy installation, a plug & play cable set is included. Practical tweeter mounts complete the set and ensure a harmonious acoustics in the vehicle.

Welche Frequenzbereiche deckt das BM45C-II ab?

The BM45C-II from STEG is designed to cover a wide range of frequencies to ensure excellent sound reproduction. The midrange driver covers frequencies from 90 Hz to 15,000 Hz, allowing for deep bass as well as clear mids and highs. Its resonance frequency of 75 Hz ensures that bass reproduction is precise, while the efficiency of 88 dB guarantees sufficient power output. This wide frequency range is particularly important for creating a realistic and three-dimensional soundstage in the vehicle interior.

Wie wirken sich die Materialeigenschaften der Lautsprecher auf den Klang aus?

The material properties of the BM45C-II speaker set from STEG significantly influence the sound. The midrange driver uses a water-repellent paper diaphragm that is lightweight yet robust, optimally transmitting vibrations to produce natural mid frequencies. The titanium and silk dome tweeters combine hardness and flexibility to create clear yet soft treble sounds. The neodymium magnet used in the midrange drivers ensures high magnetic efficiency, further enhancing sound precision. These material properties enable detailed sound reproduction and contribute to a rich, full sound image in the vehicle.

Wie installiere ich das BM45C-II Lautsprecherset in einem Mini?

The BM45C-II speaker set from STEG is specifically designed for various mini models of the F series, including F54, F55, F56, F57, and F60. Installation is quite simple thanks to the included plug & play cable set. After removing the old speakers, the new components of the set are directly inserted into the original mounts – this applies to both the 25 mm tweeters and the 100 mm midrange speakers. The crossovers are also installed easily to ensure optimal sound tuning. The included tweeter mounts facilitate precise placement. The installation depth of 36 mm must be taken into account to ensure that all parts fit correctly.

Wie beeinflusst der Neodymmagnet die Leistung des BM45C-II Mitteltöners?

The neodymium magnet in the BM45C-II midrange driver from STEG plays a crucial role in sound performance. Neodymium is a rare earth metal-based magnet known for its strong magnetic field strength at a low weight, making it perfect for compact speaker designs. These magnets maximize the motion control of the paper diaphragm, improve sensitivity, and provide precise response across the entire frequency spectrum, particularly in the range of 90 Hz to 15,000 Hz. Furthermore, they help minimize distortion, resulting in clearer sound reproduction. This is especially relevant for discerning listeners who prefer detailed sound volume.

Was ist die maximale Leistung des BM45C-II Mitteltöners?

The BM45C-II midrange driver from STEG is designed for a maximum power of 30 watts, which is quite impressive for the type of speaker set it represents. This power limit ensures that the speaker can be operated efficiently without the risk of overload. The efficiency of 88 dB allows for adequate volume to be produced even at lower power levels. Combined with a resonance frequency of 75 Hz and a frequency range of 90 to 15,000 Hz, this midrange driver offers a balanced sound experience that remains clear and concise even at higher volumes.

Wie schwer sind die einzelnen Komponenten des BM45C-II Mitteltöners?

The individual components of the BM45C-II midrange speaker from STEG are characterized by a low weight, which is advantageous for installation in vehicles. A single midrange speaker weighs 0.38 kg, making it light enough to minimally burden the vehicle's structure. This is achieved through the use of materials such as the paper diaphragm and the neodymium magnet, which are not only lightweight but also powerful. The low Mms of 6.95 grams contributes to the dynamics of the diaphragm movement, ensuring precise sound reproduction without additional mechanical stress.

Welche Einbautiefe und Einbaudurchmesser hat der BM45C-II Mitteltöner?

The BM45C-II midrange speaker from STEG has a mounting depth of 36 mm, precisely designed for the space requirements in the intended vehicle models such as BMW and MINI. The mounting diameter is 98 mm, ensuring easy integration into the factory speaker mounts of compatible vehicles. These dimensions are crucial to ensure a perfect fit, minimizing potential installation issues. Accurate measuring before installation can identify any adjustment needs, especially in BMW E-series models, where minimal adjustments may be necessary to achieve optimal sound.

Manufacturer information/responsible person

fortissimo
Dietmar Carle
Bahnhofstr. 23
88048 Friedrichshafen Kluftern
Germany

Contact: didi@fortissimo.de

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