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Sigma SSWx12

800 Watt

Sigma SSWx12

Technical Highlights

  • Extremely powerful subwoofer with 12" diameter, 2x2 Ω impedance.
  • Stiff fiberglass cone controls large cone excursion, 15 mm X-max.
  • 65 mm voice coil, 1.8 Ω DC resistance, 295 g Mms.
  • More technical details
€399.00
€399.00 €399.00
2% discount with credit card

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ProductSigma SSWx12

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datasheet
Two Gladen Sigma SSWx12 12 High-Performance Subwoofers with textured cones and branding, shown on a white background.
€399.00
€399.00 €399.00

Discover the Sigma SSWx12, a 12" (30 cm) Subwoofer from Gladen. This high-performance subwoofer delivers powerful and precise bass, making it ideal for anyone seeking a top-notch sound experience in their vehicle. With its dual 2 Ohm design, it can be flexibly adapted to various amplifiers. The subwoofer is optimized for both sealed and bass reflex enclosures. Key features include an extremely powerful high-performance drive, a stiff, highly durable diaphragm, and a long-stroke high-performance voice coil. It offers maximum sound pressure and is designed for physical bass pressure installations.

The GLADEN SIGMA SSWX12 is uncompromisingly designed for maximum deep bass, extreme level stability, and absolute control. As the largest and most powerful model in the SIGMA series, it is intended for installations where physical bass pressure and long-term durability are paramount. This subwoofer is not built for restraint but to dominate the interior space.

Its massive high-performance drive with a large voice coil controls the diaphragm confidently and with low distortion even at maximum stroke. Combined with the extremely stiff and highly durable diaphragm, the SSWX12 delivers deep-reaching bass with enormous authority—even under sustained high power demands. This is where it showcases its strength: uncompromising output without loss of control.

Thanks to its dual 2 Ohm design, the SSWX12 can be flexibly adapted to powerful mono and multi-channel amplifiers. It is optimized for sealed and bass reflex enclosures and forms the perfect foundation for uncompromising high-power car audio systems.

  • High-power 12" subwoofer for maximum sound pressure
  • Extremely powerful high-performance drive
  • Stiff, highly durable diaphragm
  • Long-stroke high-performance voice coil (Dual 2 Ohm)

Technical Data

Material

  • Dust cap: PP
  • Voice coil holder: Aluminum
  • Spider: 7" PC Mix (Poly-Cotton blend)
  • Diaphragm: Fiberglass
  • Surround: Foam
  • Basket: Aluminum

Data

  • Recommended enclosure volume: 28-32 liters
  • X-Max linear (+/-): 15 mm
  • DC resistance (Rdc): 1.8 Ω (dual)
  • Nominal impedance (Z): 2x2 Ω
  • Resonance frequency (Fs): 32 Hz
  • Voice coil diameter: 65 mm
  • Voice coil height: 40 mm
  • Mechanical quality (Qms): 7.08
  • Electrical quality (Qes): 0.53
  • Total quality (Qts): 0.5
  • Moving mass (Mms): 295 g
  • Diaphragm area (sd): 531 cm2
  • Suspension compliance (Cms): 0.07mm/N
  • Force factor (BL): 21.2 Tm
  • Equivalent air volume (Vas): 28.4 liters
  • Efficiency (η): 0.21 %
  • SPL 2.83V/1m: 88.5 dB
  • Outer diameter: 330 mm
  • Mounting diameter: 283 mm
  • Mounting depth: 172 mm

Frequently Asked Questions about Sigma SSWx12

What special feature does the Gladen Sigma SSWx12 have regarding its diaphragm?

The diaphragm of the Gladen Sigma SSWx12 is made of fiberglass and is extremely stiff and highly durable. The combination with a foam surround and an aluminum basket ensures that it remains stable under intense conditions. The high-performance voice coil, which has an aluminum coil holder, gives this 12-inch subwoofer an enormous sound pressure. It allows for a linear X-Max of +/- 15 mm, meaning that the diaphragm can handle large displacements with high precision. This results in effective, deep bass that shows hardly any distortion even under high power demands.

How does the dual 2-ohm configuration affect the adaptability of the Gladen Sigma SSWx12?

The dual 2-ohm configuration of the Gladen Sigma SSWx12 ensures that the subwoofer can be integrated very flexibly into various audio systems. This feature allows for easy adaptation to mono and multi-channel amplifiers by setting up connections in series or parallel mode. With a DC resistance (Rdc) of 1.8 Ω and a nominal impedance of 2x2 Ω, you can achieve the optimal balance between amplifier power and subwoofer load. This flexibility is particularly helpful when you want to integrate your subwoofer into an existing system without compromising sound quality.

What are the recommended enclosure volumes for the Sigma SSWx12?

For optimal operation of the Gladen Sigma SSWx12, enclosure volumes between 28 and 32 liters are recommended. These values apply to both sealed and bass reflex enclosures, as they create the ideal conditions for the development of the deep, precise bass that the subwoofer can produce. This enclosure volume supports the subwoofer's ability to maintain control over the diaphragm even at maximum displacement and prevents distortion. A correctly sized enclosure thus significantly contributes to the performance of this high-performance subwoofer.

What does the mechanical quality (Qms) of 7.08 mean for the Sigma SSWx12?

The mechanical quality (Qms) of 7.08 in the Gladen Sigma SSWx12 indicates that the Subwoofer has a high sound radiation efficiency, attributed to the mechanical properties of the system. A higher Qms value suggests that mechanical losses are kept in check, which allows for more precise control of the bass output. This characteristic supports the Subwoofer's ability to control the diaphragm even at high power levels with minimal influence from mechanical damping, contributing to a clear and powerful sound.

What role does the force factor (BL) of 21.2 Tm play in the Sigma SSWx12?

The force factor (BL) of 21.2 Tm in the Gladen Sigma SSWx12 indicates the strength of the electromagnetic drive in the Subwoofer. A high force factor means that the voice coil is capable of controlling a large magnetic displacement, resulting in precise and powerful bass. This is particularly important for the deep and powerful bass that the SSWx12 can produce, as the combination of a large 65 mm voice coil, an effective BL value, and the stiff diaphragm ensures that the Subwoofer operates reliably even in demanding audio environments.

Which Thiele-Small parameters are important for the Sigma SSWx12?

The Thiele-Small parameters of the Gladen Sigma SSWx12, such as the resonance frequency (Fs) of 32 Hz, the electrical quality (Qes) of 0.53, and the total quality (Qts) of 0.5, are significant for the performance of the Subwoofer. These parameters influence how the Subwoofer will react in a specific enclosure and help determine the optimal enclosure size and type. The actual performance of the Subwoofer, especially at low frequencies, is largely determined by these parameters. A Vas of 28.4 liters and an Mms of 295 g indicate that it is suitable for high levels and strong output even at the lowest frequency.

How is the long-stroke capability of the Sigma SSWx12 technically realized?

The long-stroke capability of the Gladen Sigma SSWx12 is achieved through a combination of a large 65 mm voice coil and a long voice coil winding of 40 mm. This configuration ensures that the diaphragm can achieve a maximum linear stroke of +/- 15 mm during operation without losing control. This not only provides powerful deep bass but also minimizes distortion at high volumes. The construction, including the dust-resistant PP dust cap, contributes to durability and stability, ensuring precise movements of the high-performance drive components.

What enables the adaptability of the Sigma SSWx12 in different enclosures?

The adaptability of the Gladen Sigma SSWx12 in different enclosures is made possible by its flexible dual 2-ohm voice coil and optimized construction. It can be mounted in both sealed and bass reflex enclosures, which is due to the specific tuning of the diaphragm and electrical properties. The high-quality fiberglass diaphragm ensures accurate bass reproduction, while the aluminum basket provides structural integrity. The variation in impedance offers great freedom in selecting and tuning the amplifier to achieve the best sound experience in any installation.

How do the materials of the Sigma SSWx12 prevent distortion at high volumes?

The materials of the Gladen Sigma SSWx12, including the rigid fiberglass diaphragm and aluminum voice coil former, play a crucial role in preventing distortion at high volumes. The foam surround helps minimize mechanical parasitic effects, while the aluminum basket provides a stable support for the moving parts. These materials are selected to withstand extreme loads while ensuring precise displacement of the voice coil. This keeps the sound clear and well-defined even at high volumes.

What are the dimensions of the Gladen Sigma SSWx12 and what impact does this have on installation?

The Gladen Sigma SSWx12 has an outer diameter of 330 mm, a cutout diameter of 283 mm, and a mounting depth of 172 mm. These precise dimensions give you specific indications of how the subwoofer fits into your vehicle. It is ideal for installations where space is limited, but thanks to its design, it also delivers optimal performance in larger enclosures. The correct installation size plays a crucial role in minimizing resonances and achieving maximum sound output. Consider these measurements to ensure there is enough space for ventilation and freedom of movement.

Manufacturer information/responsible person

Gladen Europe GmbH
Alexandra Gladen

Postal address:
Bertha-Benz-Str. 97
2141 Walddorfhäslach
Germany

Contact: info@gladen.com

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