Description
Maximum POWER for BMW sound concepts
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. Additionally they are the perfect playmate for our MATCH Upgrade amplifier MATCH UP 7BMW and MATCH UP 7DSP.
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.
Features
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 data
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
Vented box For one subwoofer For two subwoofers
Net volume 12 L 24 L
Port diameter ø 60 mm / 2.36″ 80 mm / 3.15
Port area 28 cm² 50 cm²
Port length 25 cm / 9.84″ 20 cm / 3.94″
Port tuning frequency Fb 46 Hz 46 Hz
Lower limiting frequency (-3dB) 45 Hz 45 Hz
DSP settings – Highpass: Self-Define; crossover frequency 40 Hz; Q factor 1.3
– Additional EQ filter: center frequency 67 Hz; Q factor 3.0; gain -3 dB
– Lowpass: Butterworth; 24 dB/octave; crossover frequency 80 – 100 Hz
Compatibility
Suitable for all BMW model ranges with under-seat subwoofers and universal use
Perfectly combinable with the MATCH UPGRADE amplifiers MATCH UP 7BMW and UP 7DSP
