APBMW K4M – 2-way Kit BMW MINI 10 cm 50 WRMS 88 dB 4 Ohm
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Delivery information
Delivery information
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The Sound Auto Concept Team
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Description
Description
A wider soundstage in your BMW or MINI
The APBMW K4M two-way kit combines a 100 mm midrange driver with a Tetralon dome tweeter to reproduce vocals naturally and open up the soundstage in the cabin. Its dedicated design and plug-and-play connectors make integration into compatible factory locations easy.
Midrange driver
100 W peak
Nominal impedance
Midrange sensitivity
Highlights
Water-resistant pressed paper cone for midrange reproduction without plastic resonance.
Tweeter with off-axis dispersion optimized through finite element simulation.
Die-cast aluminum chassis and connectors designed for compatible BMW-MINI locations.
- Compact and lightweight neodymium magnet assembly.
- 25 mm midrange voice coil on a fiberglass spider for rigidity and power dissipation.
- Tweeter bracket and 30 cm extension cable with plug-and-play connectors included.
- Passive crossover with high-quality components and tweeter level adjustment.
- Sold as a pair
Description
Designed to enhance factory BMW and MINI audio systems, the APBMW K4M prioritizes tonal accuracy and an expansive three-dimensional soundstage. The 100 mm midrange driver features a water-resistant pressed paper cone and has a resonance frequency of 90 Hz. The manufacturer states that a high-pass crossover between 150 and 200 Hz allows it to be integrated into a suitable audio system.
The Tetralon dome tweeter and 25 mm voice coil handle midrange and high frequencies with optimized dispersion, which is particularly useful when the speakers are not aimed directly at the listener. Available from Sound Auto Concept, this kit enhances musical reproduction while retaining compatible factory locations.
- Dedicated mounting for the relevant BMW and MINI locations, including the non-standard mounting described by the manufacturer.
- Removable, damped motor cover.
- Tweeter high-pass filter at 6 kHz with a 6 dB/octave slope.
- Level adjustment: −3 dB or 0 dB.
- Compatibility should be checked according to the vehicle's make, year, location, and factory audio system.
Technical specifications
| Specification | Value |
|---|---|
| Reference | APBMW K4M |
| Configuration | 2-way kit |
| Midrange driver diameter | 100 mm / 10 cm / 4 inches |
| Cone diameter | 80 mm |
| Nominal impedance | 4 ohms |
| Continuous power | 50 W |
| Peak power | 100 W |
| Midrange sensitivity | 88 dB |
| Midrange cone | Water-resistant pressed paper |
| Midrange voice coil | 25 mm, fiberglass spider |
| Magnet | Neodymium |
| Magnet dimensions stated | 50 × 29 × 3, unit not specified by the manufacturer |
| Chassis | Die-cast aluminum |
| Tweeter size | 29 mm |
| Tweeter voice coil | 25 mm |
| Tweeter dome | Tetralon |
| Tweeter filtering | 6 kHz high-pass, 6 dB/octave |
| Level adjustment | −3 dB / 0 dB |
| Resistance stated by the manufacturer | 3.3 ohms, original label to be confirmed |
| Fs | 90 Hz |
| Mms | 6.4 g |
| Cms | 0.5, unit not specified |
| BL | 4.8, unit not specified |
| Qms | 8.9 |
| Qts | 0.48 |
| Vas | 1.8 l |
| Le | 0.32 mH |
| Xmax | 0.5 mm |
| Midrange weight | 0.426 kg |
| Tweeter weight | 0.06 kg |
| Extension cable included | 30 cm, plug-and-play connectors |
Why choose it
- For more natural vocals and greater instrument precision.
- To widen the soundstage with a tweeter designed for off-axis listening.
- For dedicated integration into compatible BMW-MINI locations.
- To benefit from suitable connectors and tweeter level adjustment.
Check the exact compatibility of the vehicle and its audio system. The precise list of models and the number of speakers included are not provided in the information supplied. The unitless values and the mention of “89” in the filter label remain to be confirmed.
APBMW K4M – 2-way Kit BMW MINI 10 cm 50 WRMS 88 dB 4 Ohm
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