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Product Code: Match 8" UP W8BMW-S
Availability: In Stock
£249.99
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Match 8" UP W8BMW-S Underseat Subwoofer 400W Max

The ultra-flat UP W8BMW-S subwoofers are playing extremely dynamically and punchy. Especially the exceptionally rigid fiberglass cone generates maximum sound pressure without distortions.

The BMW-specific baskets and connectors allow fast and easy installation into the original mounting positions of all BMW model ranges with under-seat subwoofers.

Nevertheless these subwoofers are also perfectly qualified for universal applications. Thanks to the very low mounting depth, extremely compact sealed enclosures are no problem at all whereas the oversized 1.7” / 42.5 mm voice coil assures high power handling. With their 1 x 2 Ohms single voice coil the UP W8BMW-S are the perfect replacement for the original subwoofers of the BMW HiFi sound system.

No matter if these subwoofers are used for a bass upgrade in your BMW or as supplier of low-frequencies in universal concepts, they will definitely add loads of powerful bass for musical enjoyment.

Core Features:

  • 400W Max Power
  • 200W RMS Power
  • 2 x 8” BMW upgrade subwoofer
  • Fits perfectly into the original mounting positions under the front seats of all BMW model ranges with under-seat subwoofers
  • Extremely stiff fiberglass cone for maximum sound pressure
  • 1 x 2 Ohms impedance per woofer
  • Oversized 42.5 mm / 1.7” voice coil for high power handling
  • BMW connection cables for original BMW cable harness are included in delivery
  • Perfectly combinable with the MATCH UPGRADE amplifiers MATCH UP 7BMW and UP 7DSP
  • Also ideal for universal use in ultra-flat subwoofer constructions

Technical Specs

  • Power RMS / max. P 200 / 400 Watts
  • Impedance Z 1 x 2 Ω
  • DC resistance  Re 2.0 Ω
  • Resonance frequency  Fs 49 Hz
  • Mechanical Q factor  Qms 3.80
  • Electrical Q factor  Qes 0.61
  • Total Q factor Qts 0.53
  • Compliance Cms 210 µm/N
  • Equivalent air volume Vas 13.9 L
  • Force factor B*I 7.1 Tm
  • Efficiency 1 W / 1 m SPL 90 dB
  • Cone area Sd 214 cm²
  • Moving mass  Mms 47.4 g
  • Cone material Extremely stiff fiberglass cone
  • Mechanical resistance  Rms 3.97 kg/s
  • Voice coil diameter ø 42.5 mm
  • Voice coil winding height   12.5 mm
  • Max. linear excursion Xmax +/- 4.0 mm
  • Outer diameter ø 239 mm / 9.41"
  • Installation diameter ø 175 mm / 6.89"
  • Installation depth   40 mm / 1.57"  

Recommended enclosure volumes  

  • Sealed box  
  • Net volume 3 L
  • Lower limiting frequency (-3dB) 63 Hz
  • DSP settings - Highpass: Butterworth; 12 dB/octave; crossover frequency 40 Hz
  • Additional EQ filter: center frequency 90 Hz; Q factor 3.0; gain -4 dB
  • Lowpass: Butterworth; 24 dB/octave; crossover frequency 80 - 100 Hz

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