Match UPW8MB-S4 - Pregnant Helix - Free user manual and instructions

Product Type	Subwoofer
Brand	Helix (MATCH)
Model	UP W8MB-S4
Category	Speaker
Power Handling (RMS)	100 Watts
Power Handling (Max)	200 Watts
Frequency Response	25 Hz - 250 Hz
Impedance	4 Ω
Sensitivity	88 dB (1W/1m)
Cone Material	Coated paper
Driver Size	8 inches (200 mm)
Vehicle Compatibility	Mercedes C-Class (A205, C205, W205, S205), E-Class (A238, C238, W213, S213), GLC (X253, C253), S-Class (W222) – from model years 2013-2019
Included Accessories	Universal connection cable (50 cm / 1.64 ft)
Installation Features	Direct OEM replacement in original mounting location (front footwell); plug-and-play with original wiring
Certifications	CE
Warranty	Limited warranty against manufacturing defects

Frequently Asked Questions - Match UPW8MB-S4 Helix

How do I install the Helix Match UP W8MB-S4 subwoofer?

First, remove the splashback cover in the front footwell. Then connect the subwoofer to the original speaker cable harness, insert it into the original mounting position, and secure it with the provided screw nuts. Ensure the universal connection cable is routed safely.

What is the power handling of this subwoofer?

The subwoofer handles 100 Watts RMS and 200 Watts max power. It is designed to work with the original Mercedes audio system or an optional external amplifier.

Which Mercedes models are compatible with the UP W8MB-S4?

It fits specific C-Class (A205, C205, W205, S205 from 2014-2016), E-Class (A238, C238, W213, S213 from 2016-2017), GLC (X253, C253 from 2015), and S-Class (W222 from 2013) models. Refer to the compatibility table in the manual for exact years.

Does the subwoofer come with a crossover?

No, the UP W8MB-S4 is a dedicated subwoofer and does not include an external crossover. The frequency response is limited to 25-250 Hz, and the vehicle's audio system typically provides the necessary filtering.

Can I connect an external amplifier to this subwoofer?

Yes, the included universal connection cable (50 cm) can be used to connect an optional amplifier. The subwoofer has a 4 Ω impedance, making it compatible with most aftermarket amplifiers.

What is the impedance of the UP W8MB-S4?

The impedance is 4 Ω. This allows it to be easily driven by the factory audio system or a compatible amplifier.

What tools do I need for installation?

You will need a screwdriver to remove the splashback cover and a socket wrench for the mounting screw nuts. Additionally, plastic trim removal tools may help avoid damaging clips. Follow the vehicle manufacturer's instructions for panel removal.

Is this subwoofer compatible with the Mercedes Burmester system?

The UP W8MB-S4 is designed for vehicles without a Burmester system, but it can replace the factory subwoofer in compatible models. If your car has Burmester, ensure the mounting locations match. The manual notes that some vehicles may require the Burmester cover for tweeter installation in other speaker types.

How do I avoid damaging the subwoofer during installation?

Always operate the audio system at low volume before final installation to test. Protect cables from sharp edges and avoid stress on connectors. Ensure the subwoofer is securely mounted to prevent rattling. Do not exceed the maximum power rating.

What is the warranty coverage for the Helix Match UP W8MB-S4?

The product comes with a limited warranty against manufacturing defects. Failures from overload, improper use, or incorrect installation are not covered. Keep the proof of purchase and follow the installation instructions carefully.

USER MANUAL Match UPW8MB-S4 Helix

UPGRADE speaker systems for Mercedes vehicles

Congratulations!

Dear Customer,

Congratulations on your purchase of this high-quality MATCH speaker system.

This system highlights best quality, excellent manufacturing and state-of-the-art technology.

Thanks to more than 30 years of experiences in research and development of audio products this speaker system generation sets new standards.

We wish you many hours of enjoyment with your new MATCH speakers.

Yours

AUDIOTEC FISCHER Team

General instructions

General installation instructions for MATCH components

To prevent damage to the speakers and possible injury, read this manual carefully and follow all installation instructions. This product has been checked for proper function prior to shipping and is guaranteed against manufacturing defects.

For a proper performance and to ensure full warranty coverage, we strongly recommend to get this product installed by an authorized MATCH dealer.

General instruction for installing MATCH speaker systems

The method of installation chosen and level of execution will effect the overall performance of the speaker system. Treat each installation step with a high degree of attention.

We strongly recommend that you operate the complete audio system at low volume before final installation. This will allow a trial listening test before securing the loudspeakers into their mounting locations.

Install the cabling in a manner which precludes any danger of the leads being exposed to shear, crushing or rupture forces. If there are sharp edges in the vicinity (e.g. holes in the bodywork) all cables must be cushioned and protected to prevent fraying.

Make sure that all speaker wires easily reach the speaker terminals without stress on the wire or connectors.

Once you have tested the complete speaker system and have confirmed correct operation, turn the audio system off and prepare the loudspeaker for final mounting.

Further installation guides at www.audiotec-fischer.com

Dimensions

UP S4MB-FRT: UP S1MB-FRT:

UP X4MB-FRT: UP S4MB-SUR:

*All dimensions are noted in mm

UP S4MB-CTR:

UP W8MB-S4:
Left Right

*All dimensions are noted in mm

Installation

Removal of the door panel / rear side panel / center protective cover

In order to install the MATCH speakers in the original mounting positions it is mandatory to remove the door panels / rear side panels / center protective cover.

If you are uncertain how to remove the panels / protective cover, please either ask your local Mercedes dealer or an experienced car audio dealer for assistance. In any case follow the instructions of the car manufacturer.

Please pay attention to the following notes:

1. The cover is fastened with several hidden screws to the metal sheet of the car. Make sure that you have loosened all screws before you try to remove the cover.
2. Additionally the cover is fixed by numerous plastic clips, which may be damaged during the disassembly when the ambient temperature is below 10^ C. Always pull the cover horizontally to loosen the clips – never apply any vertical force. Note that broken plastic clips have to be replaced before reinstalling the cover in order to avoid undesired rattle and noise.

Installation of the UP C42MB-FRT

The UP C42MB-FRT is a 2-way component system, which will be mounted in the original speaker locations. After you have dismantled the cover, you can remove the original midrange speaker. Then connect the mid-woofer UP S4MB-FRT to the original speaker cable harness and insert it into the original mounting position. For the installation of the tweeter you have to remove the mirror triangle that incorporated the original tweeter. Extract the original tweeter and replace it by the new MATCH tweeter UP S1MB-FRT. If you own a car that hasn't any tweeters installed ex works, you have the possibility to buy the mirror triangles of the Mercedes Burmester sound system as spare parts from your Mercedes dealer. After the tweeter is installed, connect it to the crossover. Then connect the crossover to the original speaker cable harness. The crossover is equipped with a 3-stage tweeter level adjustment. It allows to adjust the level of the connected tweeter. Therefore adjust the switch which is located at the top of the crossover to the desired switch position.

0 dB: The tweeter has the optimum level for most applications.
-3 dB: The level of the tweeter is reduced by 3 dB.
-6 dB: If you choose this switch setting, the level of

the tweeter is reduced by 6 dB.

Next, the crossover should be properly fixed to the cover, e.g. by using some strong, double-sided adhesive tape or hot glue. Make sure that you choose an appropriate recess in the cover as position for the crossover network itself, so that it does not collide with any other part when you reassemble the cover.

Installation of the UP S1MB-FRT:

Installation of the UP S4MB-FRT / UP X4MB-FRT:

Technical line drawing of a mechanical component with no visible text or symbols

Important: Make sure that all anchoring supports of the speaker are correctly engaged.

Installation of the UP X4MB-FRT

The UP X4MB-FRT is a 2-way coaxial system, which will be installed in the original midrange speaker position. After you have dismantled the cover, you can remove the original midrange speaker. Then connect the UP X4MB-FRT to the original speaker cable harness and insert it into the original mounting position (see figure page 12, refer to item "Installation of the UP C42MB-FRT").

Installation of the UP S4MB-CTR / UP S4MB-SUR

The center speaker UP S4MB-CTR and the surround speakers are fullrange speakers, which will be mounted in the original speaker locations. After you have dismantled the cover, you can remove the original fullrange sepaker. Then connect the MATCH UP S4MB-CTR / UP S4MB-SUR to the original speaker cable and insert it into the original mounting position.

Important: The center speaker is equipped with two equal connection terminals. For audio transmission only one terminal is required. The other terminal must only be connected if the car is equipped with a SOS emergency call function ex works. Please refer to the user manual of the vehicle.

Installation of the UP S4MB-SUR / UP S4MB-CTR:

Technical line drawing of a speaker component with mounting feet and a circular base (no text or symbols)

Important: Make sure that all anchoring supports of the speaker are correctly engaged.

Installation of the UP W8MB-S4

For the installation of the front subwoofers you have to remove the splashback cover in the front footwell. Then connect the MATCH UP W8MB-S4 subwoofer to the original speaker cable harness, insert it into the original mounting position and fix it with the screw nuts.

Installation of the UP W8MBS4:

Technical line drawing of a mechanical fan or impeller assembly (no text or symbols)

The enclosed universal connection cable with 50 cm / 1,64' length can be used e.g. for connecting an optional amplifier.

Close-up of a green and red electrical connector with black cable, placed on a wooden surface (no text or symbols visible)

2-way systems:

	UP C42MB-FRT UP X4MB-FRT
Power RMS / max. 60 / 120 Watts 60 / 120 Watts
Frequency response 90 Hz - 25,000 Hz 90 Hz - 25,000 Hz
Impedance 4 Ω 4 Ω
Efficiency 1 W / 1 m 89 dB 89 dB
Cone material TW: Coated silk domeW: Coated paper		TW: Coated silk domeW: Coated paper
Crossover Separate, 6 dB	slope with 3-stage tweeter level adjustment	Integrated, 6 dB slope

Single speakers:

	UP S4MB-SUR UP S4MB-CTR	UP W8MB-S4
Power RMS / max.	60 / 120 Watts	60 / 120 Watts	100 / 200 Watts
Frequency response	90 Hz - 20,000 Hz	90 Hz - 20,000 Hz	25 Hz - 250 Hz
Impedance	4 Ω	2 x 4 Ω	4 Ω
Efficiency 1 W / 1 m	89 dB	89 dB	88 dB
Cone material	Coated paper	Coated paper	Coated paper

Vehicle compatibility (Status May 2019):

Model	Model type	Series	Model year	Front door	Rear door	Center	Surround	Front sub.
C	Convertible	A205	From 2016	UP X4MB-FRT / UP C42MB-FRT*	UP X4MB-FRT / UP C42MB-FRT*	UP S4MB-CTR	UP S4MB-SUR	UP W8MB-S4
	Coupe	C205	From 2015	UP X4MB-FRT / UP C42MB-FRT*	UP X4MB-FRT / UP C42MB-FRT*	UP S4MB-CTR	UP S4MB-SUR	UP W8MB-S4
	Sedan	W205	From 2014	UP C42MB-FRT	UP X4MB-FRT / UP C42MB-FRT*	UP S4MB-CTR	UP S4MB-SUR	UP W8MB-S4
	T-model	S205	From 2014	UP C42MB-FRT	UP X4MB-FRT / UP C42MB-FRT*	UP S4MB-CTR	UP S4MB-SUR	UP W8MB-S4
E	Convertible	A238	From 2017	UP C42MB-FRT	UP X4MB-FRT / UP C42MB-FRT*	UP S4MB-CTR	UP S4MB-SUR	UP W8MB-S4
	Coupe	C238	From 2017	UP C42MB-FRT	UP X4MB-FRT / UP C42MB-FRT*	UP S4MB-CTR	UP S4MB-SUR	UP W8MB-S4
	Sedan	W213	From 2016	UP C42MB-FRT	UP X4MB-FRT / UP C42MB-FRT*	UP S4MB-CTR	UP S4MB-SUR	UP W8MB-S4
	T-model	S213	From 2016	UP C42MB-FRT	UP X4MB-FRT / UP C42MB-FRT*	UP S4MB-CTR	UP S4MB-SUR	UP W8MB-S4
GLC	SUV	X253	From 2015	UP C42MB-FRT	UP X4MB-FRT / UP C42MB-FRT*	UP S4MB-CTR	UP S4MB-SUR	UP W8MB-S4
	SUV coupe	C253	From 2015	UP C42MB-FRT	UP X4MB-FRT / UP C42MB-FRT*	UP S4MB-CTR	UP S4MB-SUR	UP W8MB-S4
S	Sedan	W222	From 2013	UP C42MB-FRT	UP C42MB-FRT	UP S4MB-CTR	UP S4MB-SUR	UP W8MB-S4

* For installation the cover incl. tweeter mounting fixture of the Mercedes Burmester sound system is required.

Legal note

• MATCH by Audiotec Fischer or Audiotec Fischer GmbH are in no way affiliated with the Daimler AG or any of its subsidiaries or affiliated companies connected to, or is acting on its behalf or with its authorization.
• All registered product names, trade marks and brands are the property of their respective owners.
  • The compatibility with the specified types of vehicles reflects the information available on May 2019.
  • Technical changes and errors reserved

Warranty Disclaimer

The limited warranty comply with legal regulations. Failures or damages caused by overload or improper use are not covered by the warranty.

Please return the defective product only with a valid proof of purchase and a detailed malfunction description. Technical specifications are subject to change! Errors are reserved!

For damages on the vehicle and the device, caused by handling errors of the device, we can't assume liability.

All MATCH speakers are tagged with a CE-Certification mark. Thereby these devices are certified for the use in vehicles within the European Community (EC).

AUDIOTEC

FISCHER