Match UP W8MB-S4 LHD – 8″ upgrade subwoofers for Mercedes vehicles (left-hand drive)
The UP W8MB-S4 LHD is the bass foundation of Audiotec Fischer’s MATCH UPGRADE system for Mercedes. The set of two 8″ (200 mm) subwoofers replaces the factory bulkhead woofers in left-hand-drive C-Class (205), E-Class (238/213) and GLC (253) models, adding the deep, punchy bass the standard speaker setup does not deliver.
The heavy-duty woofers fit the original mounting positions in the bulkhead, use exclusively developed baskets and car-specific connectors and are tuned for Mercedes vehicles with significantly increased power handling. Audiotec Fischer states they show their full dynamic potential with one of its DSP amplifiers.
Key Features
- Pair of 8″ woofers: two 200 mm heavy-duty subwoofers.
- Factory bulkhead positions: fit the original mounting locations.
- Left-hand-drive version: for LHD vehicles.
- Mercedes-specific tuning: sound characteristics optimised for Mercedes vehicles.
- Higher power handling: 100 W RMS / 200 W max per woofer.
- Exclusive baskets: developed exclusively for Mercedes vehicles.
- Car-specific connectors: for easy installation; a universal connection cable is included.
- Deep bass extension: frequency response from 25 Hz.
- System expandable: combinable with other MATCH UPGRADE components such as DSP amplifiers.
Drivers & Construction
8″ (200 mm) heavy-duty woofer with a paper cone, a 37 mm voice coil with 16 mm winding height and an impedance of 1 x 4 Ω. The basket is developed exclusively for Mercedes vehicles and fits the original mounting position in the bulkhead; a car-specific connector simplifies the electrical connection.
Acoustic Performance
- Power handling: 100 W RMS / 200 W max.
- Impedance: 1 x 4 Ω (Re 3.6 Ω).
- Sensitivity: 88 dB (1 W / 1 m).
- Frequency response: 25 – 250 Hz.
- Fs: 51 Hz; Qms: 7.24; Qes: 0.71; Qts: 0.64.
- Vas: 18 l; Cms: 276 µm/N; BxI: 7.6 Tm.
- Sd: 216 cm²; Mms: 35 g; Rms: 1.6 kg/s.
- Xmax: ±5 mm.
Installation Notes
- Mounting: original bulkhead mounting positions.
- Drive side: left-hand-drive version; a right-hand-drive version (UP W8MB-S4 RHD) and a single LHD woofer (UP W8MB-S4 Single LHD) are also available.
- Included: 2 subwoofers, 1 universal connection cable, 1 manual.
Compatible vehicles as listed by the manufacturer (status February 2020):
- C-Class: Convertible A205 (from 2016), Coupe C205 (from 2015), Sedan W205 (from 2014), T-Model S205 (from 2014)
- E-Class: Convertible A238 (from 2017), Coupe C238 (from 2017), Sedan W213 (from 2016), T-Model S213 (from 2016)
- GLC: SUV X253 (from 2015), SUV Coupe C253 (from 2015)
Technical Specifications
| Power RMS / max. | P | 100 / 200 Watts |
| Impedance | Z | 1 x 4 Ω |
| DC resistance | Re | 3,6 Ω |
| Frequency response | 25 – 250 Hz | |
| Resonance frequency | Fs | 51 Hz |
| Mechanical Q factor | Qms | 7.24 |
| Electrical Q factor | Qes | 0.71 |
| Total Q factor | Qts | 0.64 |
| Compliance | Cms | 276 µm/N |
| Equivalent air volume | Vas | 18 L |
| Force factor | B*I | 7.6 Tm |
| Efficiency 1 W / 1 m | SPL | 88 dB |
| Cone area | Sd | 216 cm² |
| Moving mass | Mms | 35 g |
| Cone material | Paper cone | |
| Mechanical resistance | Rms | 1.6 kg/s |
| Voice coil diameter | ø | 37 mm |
| Voice coil winding height | 16 mm | |
| Max. linear excursion | Xmax | +/- 5 mm |
Scope of Delivery
2 x Subwoofer MATCH UP W8MB-S4 left hand drive version
1 x Universal connection cable
1 x Instruction manual


















