HERTZ SS 15 D2

The HERTZ SS 15 D2 was developed for uncompromising bass performance and is aimed at discerning car audio enthusiasts and SPL fans. With its extremely durable 75-mm dual voice coil, solid ferrite magnet, and high-strength paper cone reinforced with cotton fibers, this 15-inch subwoofer delivers impressive sound pressure levels combined with precise bass reproduction. The robust construction, featuring a reinforced double spider and generously sized surround, ensures maximum control and long-term reliability even at high excursion levels. Thanks to its 2 x 2-ohm dual voice coil, the SS 15 D2 can be flexibly adapted to various amplifier configurations and is suitable for both high-performance everyday systems and SPL competitions.

Technical Specifications

• Speaker Type: SPL Subwoofer
• Nominal diameter: 380 mm (15 inches)
• Power Handling (RMS): 1,200 watts
• Maximum power rating: 2,400 watts
• Impedance: 2 × 2 ohms (dual voice coil)
• Voice coil diameter: 75 mm (3 inches)
• Voice coil design: 4-layer
• Magnetic material: Ferrite
• Magnet dimensions: 180 × 90 × 40 mm
• Diaphragm: Unpressed paper with cotton fibers
• Sensitivity: 88 dB (1 W / 1 m)
• Resonance frequency (Fs): 31 Hz
• DC resistance (Re): 0.96 ohms
• Inductance (Le): 1.0 mH
• Equivalent volume (Vas): 68.83 liters
• Overall Quality (Qts): 0.61
• Electrical quality (Qes): 0.66
• Mechanical Quality (Qms): 7.4
• Moving mass (Mms): 361 g
• Force factor (BL): 10 Tm
• Linear stroke (Xmax): 15.4 mm
• Maximum mechanical travel (Xmech): 20.7 mm
• Installation depth: 210 mm
• Installation diameter: 353 mm
• Outer diameter: 390 mm
• Weight: approx. 10.1 kg
• Connection: High-current push terminals suitable for up to 6 mm²