HiFonics ZRX8D2

The HiFonics ZRX8D2 from the ZEUS POWER series is a powerful 20 cm (8-inch) subwoofer that, despite its compact dimensions, impresses with its enormous power handling and punchy bass reproduction. Its solid construction and high-quality components make it the ideal choice for demanding car audio applications.

The double polycotton centering and the specially designed ribbed surround ensure exceptional stability and precise diaphragm control. This reduces unwanted rolling motions and promotes controlled, linear excursion even under high loads.

The coated, handmade paper cone is exceptionally robust and is supported by a sturdy cast aluminum basket. The powerful dual-magnet drive, with a total weight of approximately 3.4 kg, provides the necessary driving force for dynamic and powerful bass responses.

Thanks to its 2 x 2-ohm dual voice coil, the ZRX8D2 can be flexibly paired with a variety of amplifiers. With 600 watts RMS and a maximum power handling capacity of up to 1,200 watts, the subwoofer offers impressive power reserves for its size.

The combination of generous ventilation, reinforced centering, and a double-stitched surround provides high mechanical strength and ensures reliable sound reproduction even during demanding bass passages.

Technical Specifications

General Characteristics

• Manufacturer: HiFonics

• Model: ZRX8D2

• Series: ZEUS POWER ZRX

• Product Type: Passive Subwoofer

• Nominal diameter: 20 cm (8 inches)

• Construction: Subwoofer driver without enclosure

• Impedance: 2 x 2 ohms (dual voice coil)

• Connection options: 1 ohm in parallel / 4 ohms in series
  
  

Performance Data

• RMS power handling: 600 watts

• Maximum power rating: 1,200 watts

• Sensitivity (SPL): 82 dB (1 W/1 m)
  
  

Diaphragm and Actuator

• Diaphragm material: Handmade, coated paper diaphragm

• Basket material: Die-cast aluminum

• Centering: Double polycotton centering

• Seam: Reinforced seam with a ribbed pattern and double stitching

• Magnetic drive: Dual magnet with 2 x 70 oz

• Magnet weight: approx. 3.4 kg

• Magnet diameter: 156 mm

• Magnet height: 50 mm

• Voice coil type: Dual Voice Coil (DVC)

• Voice coil diameter: 64 mm, according to the individual technical data sheet

• Voice coil winding height: 35 mm

• Maximum linear deflection according to the current data sheet: ±17 mm
  
  

Thiele-Small parameters

• Resonance frequency (Fs): 40.4 Hz

• Total quality (Qts): 0.43

• Electrical quality (Qes): 0.47

• Mechanical Quality (Qms): 5.26

• Equivalent air volume (Vas): 6.1 liters

• Effective membrane area (Sd): 204 cm²

• Mass in motion (Mms): 148.2 g

• DC resistance (Re): 2 x 2 ohms

• Voice coil inductance (Le): 2.4 mH

• Force factor (BL): 18.3 N/A
  
  

Dimensions

• Outer diameter: 220 mm

• Installation diameter: 184 mm

• Installation depth: 144 mm