Musway CSB-8W

Musway CSB8W – 8-inch BMW Underseat Subwoofer with Plug&Play

The Musway CSB8W is a vehicle-specific 8-inch underseat subwoofer for numerous BMW and MINI models. It uses a lightweight 50mm CCAW voice coil for high efficiency of 89 dB/W/m and can be integrated without soldering thanks to its plug&play connectors. The 2-ohm design confidently extracts power from near-factory or aftermarket amplifiers. At Carhifi.shop, you can get the CSB8W as a perfect fit replacement for the factory woofers under the seats.

Technical Highlights

• 20 cm (8") BMW underseat subwoofer
• Power: 180 Watts RMS / 300 Watts Max
• Impedance: 2 Ohm
• Frequency range: 30 – 300 Hz
• Efficiency: 89 dB/W/m
• 50 mm (2") CCAW voice coil (light, efficient)
• Dual neodymium magnet for a compact, powerful drive
• Fiberglass cone with Nomex centering spider
• Mounting depth: 31 mm
• Mounting diameter: 192 mm
• Plug&Play connections, vehicle-specific

In practice, the CSB8W delivers tight deep bass and clear kick bass up to approximately 300 Hz. The combination of a fiberglass cone, Nomex centering spider, and dual neodymium drive ensures controlled cone guidance – a plus, especially in the compact underseat installation space.

Installation & Compatibility

Thanks to the vehicle-specific connectors and low mounting depth, replacing the factory-installed underseat subwoofers is straightforward. The Musway CSB8W fits the following models:

BMW 1 Series

• BMW E81 3-door
• BMW E82 Coupé
• BMW E87 5-door
• BMW E88 Convertible
• BMW F20 5-door
• BMW F21 3-door
• BMW F40 5-door

BMW 2 Series

• BMW F22 Coupé
• BMW F23 Convertible
• BMW F44 Gran Coupé
• BMW F45 Active Tourer
• BMW F46 Gran Tourer
• BMW F87 M2

BMW 3 Series

• BMW E90 Sedan
• BMW E91 Touring
• BMW E92 Coupé
• BMW E93 Convertible
• BMW F30 Sedan
• BMW F31 Touring
• BMW F34 Gran Turismo
• BMW F80 M3
• BMW G20 Sedan
• BMW G21 Touring
• BMW G28 Sedan
• BMW G80 M3

BMW 4 Series

• BMW F32 Coupé
• BMW F33 Convertible
• BMW F36 Gran Coupé
• BMW F82 M4
• BMW F83 M4 Convertible
• BMW G22 Coupé
• BMW G23 Convertible

BMW 5 Series

• BMW E60 Sedan
• BMW E61 Touring
• BMW F07 Gran Turismo
• BMW F10 Sedan
• BMW F11 Touring
• BMW G30 Sedan
• BMW G31 Touring

BMW 6 Series

• BMW E63 Coupé
• BMW E64 Convertible
• BMW F06 Gran Coupé
• BMW F12 Coupé
• BMW F13 Convertible
• BMW G32 Gran Turismo

BMW 7 Series

• BMW E65 Sedan
• BMW E66 Sedan
• BMW F01 Sedan
• BMW F02 Sedan
• BMW G11 Sedan
• BMW G12 Sedan

BMW X1

• BMW E84
• BMW F48
• BMW F49

BMW X2

• BMW F39

BMW X3

• BMW E83
• BMW F25
• BMW G01

BMW X4

• BMW F26
• BMW G02

BMW X5

• BMW E70
• BMW F15
• BMW F85

BMW X6

• BMW E71
• BMW F16

MINI

• BMW R60
• BMW R61
• BMW F56
• BMW F55
• BMW F54
• BMW F57
• BMW F60

If you're planning a solid bass foundation for your near-factory system or an upgrade with a DSP/amplifier, the Musway CSB8W is a well-thought-out solution – precisely fitting, efficient, and quickly installed.