Rockford Fosgate Power Series BMW 8 Inch Direct Fit Subwoofer - T3-BMW-SUB
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The Power T3-BMW-SUB is an 8” slim subwoofer designed as a direct fit replacement/upgrade for select BMW® models. Speaker features a BMW® factory connector and 150 watt power handling capacity.


The T3-BMW-SUB is a direct fit subwoofer intended to replace or upgrade factory models installed in select BMW® vehicles (see compatibility chart). The speaker is designed using a neodymium motor and glass fiber sandwich cone and rubber surround. Sub features the BMW® factory connector for easy plug-n-play operation. Made in Germany.

  • Glass fiber reinforced poly‐carbonate frame
  • NBR rubber surround
  • Bimax spider
  • Neodymium magnet
  • 2" voice coil with high temp aluminum former
  • Designed to replace factory OEM BMW 8" woofer
  • Includes original BMW connectors
  • 1 Year Warranty



Power handling on Rockford Fosgate speakers conform to CEA-2031 industry standards.

Klippel Verified

Klippel is a speaker certification program allowing us to deliver the best possible subwoofers.

Anodized Aluminum Voice Coil Former

Rockford Fosgate subwoofers use anodized aluminum voice coil formers that provide superior heat dissipation (up to 100° at full power levels). Unlike traditional plastic substitutions, aluminum acts like a heat-sink to quickly dissipate thermal build-up on the voice coil. This keeps subwoofers cool during high SPL conditions.

Power Handling (Watts RMS)150 Watts RMS
300 Watts Max
Speaker ConnectorCustom BMW® Terminal
Shipping Weight3.85 Lbs. (1.7 Kg.)
Fs (Hz)38
Cutout Diameter7.7 in. (195 mm)
Nominal Impedance4-Ohm
Voice Coil Diameter2.0" (50.80 mm)
Mounting Depth1.2 in. (31.2 mm)
SPL (dB @ 1w/1m)88
Vas (Liters)40.6
Xmax (mm)7
Re (Ohms)3.7
Le (mH)0.61
Sd (cm2)243

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