Zeta 08

Discover the Zeta 08 from Gladen, an 8-inch (20 cm) Subwoofer that stands out for its powerful bass and precise sound depth. With its robust aluminum diaphragm and 2x2 Ohm voice coil, the Subwoofer ensures clean bass reproduction and is particularly effective in compact, sealed enclosures with a recommended volume starting from 12 liters. Its construction allows for controlled reproduction of low-frequency sounds, while the stiff aluminum diaphragm combined with the long-stroke voice coil provides a linear and precise movement. The Zeta 08 is the perfect choice for those who value high performance and excellent sound quality.

The Zeta 08 is a 22 cm Subwoofer chassis designed for controlled and distortion-free reproduction of low-frequency sounds. Due to its design, which focuses on linear diaphragm movement and stable drive characteristics, it is particularly suitable for compact Subwoofer applications.

The stiff aluminum diaphragm ensures clean piston movement across the entire working range, allowing for precise bass reproduction even at higher levels. The stable aluminum die-cast basket is generously ventilated to reduce air compression during operation and offers high mechanical strength.

The magnet and drive system features integrated field stabilization, which keeps the magnetic flux constant at increasing levels. This reduces nonlinear distortions, especially at larger diaphragm excursions.

The powerful motor is equipped with a 2-inch voice coil and ensures controlled power transfer in the low-frequency range. The voice coil is built on a robust fiberglass carrier, which reduces mechanical losses and supports precise control of the diaphragm.

Thanks to its large linear excursion, the Zeta 08 delivers clean and controlled bass reproduction even at higher levels. This makes the chassis particularly suitable for applications where precision, control, and reliability are important.

• Music-oriented design: controlled, precise bass
• Long-stroke voice coil for linear movement
• Robust diaphragm structure
• 2x2 Ohm voice coils
• Conex Spider
• Designed for compact, sealed enclosures
• Enclosure recommendation: from 12 liters (sealed)

Technical Data

Material

• Dust cap: Aluminum
• Voice coil carrier: CFRP
• Spider: Conex
• Diaphragm: Aluminum
• Surround: NBR
• Basket: Aluminum

Data

Measurements obtained with an attached voice coil.

• Recommended enclosure volume (sealed): 12 liters Sealed / 30 liters Ventilated
• X-Max linear (+/-): 11 mm
• DC resistance (Rdc): 1.85 Ω (dual)
• Nominal impedance (Z): 2x2 Ω
• Resonance frequency (Fs): 21 Hz
• Voice coil diameter: 50 mm
• Voice coil height: 30 mm
• Mechanical quality (Qms): 9
• Electrical quality (Qes): 0.61
• Total quality (Qts): 0.57
• Moving mass (Mms): 116 g
• Diaphragm area (Sd): 206 cm2
• Mechanical resistance (Rms): 1.7 kg/s
• Suspension compliance (Cms): 0.49 mm/N
• Force factor (BL): 6.8 Tm
• Equivalent air volume (Vas): 29.7 liters
• SPL 2.83V/1m: 89.06 dB
• Outer diameter: 224 mm
• Mounting diameter: 189 mm
• Mounting depth: 118 mm