S 4X - Loudspeaker Helix - Free user manual and instructions

Product Type	Coaxial Speaker System
Brand	Helix
Model	S 4X
RMS Power	60 Watts
Max Power	120 Watts
Frequency Response	80 Hz - 25,000 Hz
Impedance	4 Ω
Efficiency (1W/1m)	89 dB
Cone Material (Woofer)	Basalt-fiber-paper compound
Dome Material (Tweeter)	Coated silk
Tweeter Size	19 mm / 0.75"
Crossover Type	Separate inline crossover
Crossover Slope	6/6 dB
Crossover Dimensions	58 x 49 x 24 mm
Outer Diameter	102 mm / 4.01"
Installation Diameter	92.3 mm / 3.63"
Installation Depth	46.5 mm / 1.83"
Installation Notes	Ensure flat mounting surface; avoid water exposure; correct phase connection (+ to +, - to -)
Warranty	Limited warranty per legal regulations; excludes overload or improper use
Recommended Use	Car audio systems; coaxial upgrade

Frequently Asked Questions - S 4X Helix

What is the power handling of the Helix S 4X speaker?

The Helix S 4X handles 60 Watts RMS and 120 Watts max power.

What is the frequency response of the S 4X?

The frequency response is 80 Hz - 25,000 Hz.

How do I connect the speakers correctly?

Ensure correct phase: connect plus to plus and minus to minus. The positive lead has a red stripe. Reversing phase causes loss of sound quality.

What are the mounting dimensions for the S 4X?

Outer diameter: 102 mm, installation diameter: 92.3 mm, installation depth: 46.5 mm.

Does the S 4X have a crossover?

Yes, it includes a separate inline crossover with a 6/6 dB slope and integrated tweeter protection.

Can I adjust the tweeter level on the S 4X?

The S 4X coaxial system does not have a tweeter level adjustment; that feature is on the component systems (S 62C/S 42C). The S 4X uses a fixed inline crossover.

What type of tweeter does the S 4X use?

It uses a 19 mm coated silk dome tweeter for balanced, natural sound.

How should I clean or maintain the speakers?

Avoid water exposure. Clean with a dry cloth. Do not use harsh chemicals. Ensure mounting is secure to prevent vibrations.

What is covered under warranty?

The limited warranty covers manufacturing defects per legal regulations. Overload or improper use is not covered.

Can I install the S 4X in any car?

Check mounting depth and diameter for your vehicle. The speaker is designed for standard car audio installations, but verify fitment in your specific location (e.g., doors, rear deck).

USER MANUAL S 4X Helix

Abstract geometric logo with a stylized human figure and a triangular shape (no text or symbols)

HELIX

Exterior view of a black HELEX speaker with various electronic components (no visible text or symbols)

S 62C / S 42C

S 6X / S 4X

Component and coaxial speaker systems

Cross-sectional diagram of a circular mechanical or optical component with concentric layers and central diamond-shaped feature (no text or symbols)

Frequenzweichen

Flex-Crossover S 62C / S 42C

S 6X / S 4X

*Alle Abmessungen in mm

Installation

Close-up of two electronic components with wires and a red cross mark on the left side (no visible text or symbols)

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

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

Thanks to more than 30 years of experience in

research and development of audio products this speaker system generation sets new standards.

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

Yours

AUDIOTEC FISCHER Team

General instructions

General instructions for installing a HELIX speaker system

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 HELIX dealer. If you choose to perform your own installation read the following information and precautions carefully. Failure to follow the stated precautions may result in personal injury and / or damage to the audio system or vehicle.

1. Always make sure that the speaker will fit into the intended mounting location and that there is adequate depth for the magnet system.
2. Check for adequate space between speaker and window, window crank, power window mechanism, seat, rear deck torsion bars, and other items which may interfere with the speaker's mounting. This is very important if any hole cutting is required. Detailed size information is indicated in the dimension section of this manual. Take care that the mounting surface is flat and free from all obstructions.
3. Ensure that the loudspeakers are correctly connected (phase), i.e. plus to plus and minus to minus. Exchanging plus and minus may result in significant loss of sound quality.
4. Make sure that the crossovers are mounted properly.

5. Do not mount the speakers and crossovers where water may splash on them.

6. The quality of the installation has a significant effect on the overall performance of the speaker system. Treat each installation step with a high degree of attention.

7. Avoid low frequency cancellation caused by air leakage between the speaker basket and the mounting surface (e.g. mounted on a bended or uneven surface or mounted in an oversized hole).
8. Mounting panel reinforcement may be necessary in some cases in order to ensure a stable, torsion-free and even surface. This can be achieved by mounting the speaker on a metal or wooden sub-baffle behind the body or door panel. Consult an installation specialist for further advices.
9. In most cases you can use the original speaker mounting locations in the doors, body panels or the rear deck. If these are not available you have to prepare your own secure installation place. Due to their structural integrity and accessibility the precut mounting holes should be used whenever possible. Information on a proper mounting can be found in the section "Installation" of this manual.

IMPORTANT: Never cut any metal that is an integral part of an automobile's safety or structural car body.

General instructions for connecting HELIX speaker systems

We strongly recommend that you operate the complete audio system at low volume before final installation. So you can check whether each speaker is working before securing the loudspeakers into their mounting locations.

General instructions

Make sure that all speaker wiring is fully protected from cutting or wear at sharp edges, which can lead to short circuits that may damage your head unit, amplifier and/or speaker system.

Make sure that all speaker wires are long enough in order to avoid any mechanical stress on the wires or the connectors.

Attention: Ensure that the loudspeakers are correctly connected (phase), i.e. plus to plus and minus to minus. Exchanging plus and minus will result in a significant loss of sound quality.

The positive leads of the loudspeaker system are marked with a red stripe.

General instructions for connecting the HELIX "Flex-Crossovers"

The crossovers of the S 62C / S 42C component system offer two configuration options.

Option a: Connecting the crossovers in vehicles with mounting positions of tweeter and woofer close to each other, e.g. in the car door.

Option b: Connecting the crossovers in vehicles with separate mounting positions of tweeter and woofer, e.g. tweeter in the A-pillar and woofer in the car door.

For further information regarding the connection of the crossovers see section “Connecting the Flex-Crossover” in this manual.

S 62C / S 6B S 42C / S 4B

S 6X S 4X

S 1T

Circular diagram with concentric rings and a central diamond shape, no text or symbols present

Dimensions

Crossovers

Flex-Crossover S 62C / S 42C

S 6X / S 4X

*All dimensions are noted in mm

Installation

Woofer mounting

Tweeter mounting
Flush mount

Connecting the Flex-Crossover (S 62C / S 42C)

Option a: Connecting the crossovers in vehicles with mounting positions of tweeter and woofer close to each other, e.g. in the car door

graph LR
    A["Head unit / amplifier"] --> B["HELIX WOOPER"]
    B --> C["Woofer"]
    B --> D["Tweeter"]
    D --> E["Tweeter"]
    B --> F["HELIX OUT"]
    D --> G["HELIX OUT"]

Option b: Connecting the crossovers in vehicles with separate mounting positions of tweeter and woofer, e.g. tweeter in the A-pillar and woofer in the car door

graph TD
    A["Head unit / amplifier"] --> B["HELIX WOOFER"]
    B --> C["Woofer"]
    B --> D["Tweeter"]
    B --> E["Remains unused"]
    B --> F["WEIGHT"]
    B --> G["WEIGHT"]

Ensure that all components are correctly connected (phase), i.e. plus to plus and minus to minus. The positive leads of the loudspeaker system are marked with a red stripe.

Adjusting the level of the tweeter: The crossover of the tweeter 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.

+2 dB: The level of the tweeter is increased by +2 dB.

0 dB: The tweeter has the optimum level for most applications.

-2 dB: If you choose this switch setting, the level of the tweeter is reduced by -2 dB.

Connecting the separate crossover of the coaxial systems

graph LR
    A["Head unit / amplifier"] --> B["HeHIX"]
    B --> C["W* = Woofer\nTW = Tweeter"]

Note: The connection cable of the tweeter (cabel head with two small flat plugs) must be connected to the quad-connector of the loudspeaker (see following figure).

Close-up of two electronic components with wires and a red cross mark on the left (no visible text or symbols)

Ensure that all components are correctly connected (phase), i.e. plus to plus and minus to minus. The positive leads of the loudspeaker system are marked with a red stripe.

Features

• Woofer with novel basalt fiber-paper compound cone – a perfect combination of lowest weight, high stiffness and inner damping
• 1" / 25 mm silk dome tweeter in a noble aluminum housing (S 6X: 25 mm / S 4X: 19 mm) for balanced, natural sound reproduction and lowest compression effects
• Individual HELIX basket with additional ventilation holes for better voice coil cooling and high power handling
• S 62C / S 42C: Separate, two-part "Flex-Crossover" with 6/12 dB (S 42C: 12/12 dB) slope,

bandstop filter and three-stage tweeter level adjustment – well suited for the installation in vehicles with separate mounting positions of the tweeter and woofer

- S 62C / S 42C: Crossovers solely equipped with high grade components e.g. low-distortion air-core coils and minimum-loss Audiotec-foil capacitors for tweeter crossover

- S 6X / S 4X: Separate inline crossover with 6/12 dB (S 4X: 6/6 dB) slope and integrated tweeter protection

Component systems:

	S 62C S 42C
Power RMS / max. 100 / 200 Watts 70 / 140 Watts
Frequency response 45 Hz - 25,000 Hz 75 Hz - 25,000 Hz
Impedance 4 Ω 4 Ω
Efficiency 1 W / 1 m 90 dB 89 dB
Cone material	TW: Coated silk domeW: Basalt-fiber-paper compound	TW: Coated silk domeW: Basalt-fiber-paper compound
Crossover	6/12 dB with bandstop filter,tweeter protection and tweeter level adjustment	12/12 dB with bandstop filter,tweeter protection and tweeter level adjustment
Dimensions crossover	TW: 88 x 68 x 28 mm /3.46 x 2.67 x 1.10"W: 88 x 68 x 28 mm /3.46 x 2.67 x 1.10"	TW: 88 x 68 x 28 mm /3.46 x 2.67 x 1.10"W: 88 x 68 x 28 mm /3.46 x 2.67 x 1.10"
Outer diameter	TW: 51 mm / 2.00"W: 165 mm / 6.50"	TW: 51 mm / 2.00"W: 102 mm / 4.01"
Installation diameter	TW: 45 mm / 1.77"W: 143 mm / 5.63"	TW: 45 mm / 1.77"W: 92.3 mm / 3.63"
Installation depth	TW: 14 mm / 0.55"W: 65 mm / 2.56"	TW: 14 mm / 0.55"W: 46.5 mm / 1.83"

Coaxial systems:

	S 6X	S 4X
Power RMS / max. 80 / 160 Watts	60 / 120 Watts
Frequency response 50 Hz - 25,000 Hz 80 Hz - 25,000 Hz
Impedance 4 Ω 4 Ω
Efficiency 1 W / 1 m 90 dB 89 dB
Cone material	TW: Coated silk domeW: Basalt-fiber-paper compound	TW: Coated silk domeW: Basalt-fiber-paper compound
Crossover	Separate, 6/12 dB slope	Separate, 6/6 dB slope
Dimensions crossover	58 x 49 x 24 mm /2.32 x 1.96 x 0.94"	58 x 49 x 24 mm /2.32 x 1.96 x 0.94"
Outer diameter	165 mm / 6.50"	102 mm / 4.01"
Installation diameter	143 mm / 5.63"	92.3 mm / 3.63"
Installation depth	65 mm / 2.56"	46.5 mm / 1.83"

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 speakers caused by handling errors of the speaker system we can't assume liability.

AUDIOTEC

FISCHER