Match UP C42MB-FRT.3 – 2-way component upgrade for the Mercedes C-Class 206
The UP C42MB-FRT.3 is part of Audiotec Fischer’s MATCH UPGRADE range of vehicle-specific replacement speakers. This version of the 2-way component system is dedicated to the current Mercedes C-Class generation 206 (Convertible, Coupe, Sedan and T-Model from 2021) and replaces the factory door speakers, which the manufacturer considers insufficient for demanding listeners.
The set is designed to offer clearly better precision and dynamics than the OEM speakers across the frequency range, with fine treble detail from a 25 mm silk dome tweeter whose level can be adjusted in three steps. The sound is tuned for Mercedes vehicles, power handling is significantly increased, and the speakers reach their full dynamic potential with one of Audiotec Fischer’s DSP amplifiers.
Key Features
- For C-Class 206: Convertible A206, Coupe C206, Sedan W206 and T-Model S206 from 2021.
- Mercedes-specific tuning: sound characteristics optimised for Mercedes vehicles.
- Higher power handling: 60 W RMS / 120 W max.
- 25 mm silk dome tweeter: coated silk dome for high treble resolution.
- 3-stage tweeter level: adjustable to taste.
- Separate crossover: 6 dB slope.
- Extended bass response: frequency response down to 80 Hz.
- Exclusive baskets and car-specific connectors: developed for Mercedes for easy installation.
- System expandable: combinable with other MATCH UPGRADE components such as DSP amplifiers.
- Complete set: two tweeters (UP S1MB-FRT), two mid/woofers (UP S4MB-FRT.3), two crossovers and a manual.
Drivers & Construction
The tweeter uses a coated silk dome (25 mm dome, 43.1 mm / 1.70″ outer diameter); the woofer uses a coated paper cone with a 121 mm (4.76″) outer diameter. There is no separate midrange driver. Note that this kit uses the UP S4MB-FRT.3 woofer, which differs from the woofer in the UP C42MB-FRT for the previous model series.
Acoustic Performance
- Power handling: 60 W RMS / 120 W max.
- Impedance: 4 Ω.
- Sensitivity: 92 dB @ 2.83 V / 1 m; 89 dB @ 1 W / 1 m.
- Frequency response: 80 Hz – 25,000 Hz.
Crossover
Two separate passive crossovers with a 6 dB slope are supplied, each with a 3-stage tweeter level adjustment.
Installation Notes
- Tweeter: installation diameter 39 mm (1.54″), installation depth 23.7 mm (0.93″).
- Woofer: installation diameter 121 mm (4.76″), installation depth 35.8 mm (1.41″).
- Positions: front door and rear door.
- Burmester parts: for positions marked with * the cover including the tweeter mounting fixture from the Mercedes Burmester sound system is required.
Compatible vehicles as listed by the manufacturer:
- C-Class Convertible A206 (from 2021) – front door*, rear door*
- C-Class Coupe C206 (from 2021) – front door*, rear door*
- C-Class Sedan W206 (from 2021) – front door, rear door*
- C-Class T-Model S206 (from 2021) – front door, rear door*
Technical Specifications
| Power handling RMS / Max. | 60 / 120 Watts |
| Frequency response | 80 Hz – 25,000 Hz |
| Impedance | 4 Ω |
| Sensitivity | 92 dB @ 2.83V / 1m 89 dB @ 1W / 1m |
| Cone material | TW: Coated silk dome M: – W: Coated paper |
| Crossover | Separate, 6 dB slope with 3-stage tweeter level adjustment |
| Outer diameter | TW: 43.1 mm / 1.70″ M: – W: 121 mm / 4.76″ |
| Installation diameter | TW: 39 mm / 1.54″ M: – W: 121 mm / 4.76″ |
| Installation depth | TW: 23.7 mm / 0.93″ M: – W: 35.8 mm / 1.41″ |
Scope of Delivery
2 x Tweeter MATCH UP S1MB-FRT
2 x Midwoofer MATCH UP S4MB-FRT.3
2 x Crossover
1 x Instruction manual
