Hertz SPL Show SS 15 D2

Hertz SPL Show SS 15 D2 - 15-inch SPL Subwoofer with 1200 W RMS

The Hertz SPL Show SS 15 D2 is a 15-inch subwoofer for high sound pressure levels and controlled deep bass. Its 75mm dual voice coil with 2+2 ohms allows flexible wiring to 1 or 4 ohms. With 1200 W RMS and up to 2400 W Peak, it is designed for high currents and continuous load – supported by a large ferrite magnet unit, double-layer spider, and a multi-layer foam surround.

Technical Highlights

• Size: 380 mm (15 inches)
• Power Handling: 1200 W RMS / 2400 W Peak
• Impedance: 2 + 2 Ohm (Dual Voice Coil)
• Mounting Depth: 210 mm
• Voice Coil: Ø 75 mm (3"), dual
• Magnet Size (W x D x H): 180 x 90 x 40 mm, Ferrite
• Cone: Unpressed paper with cotton fiber
• Xmech: 20.7 mm
• Weight: 10.1 kg

Electro-acoustic Values

• Effective Cone Diameter (D): 323 mm
• Xmax: 15.4 mm
• Re: 0.96 Ohm
• Fs: 31 Hz
• Le: 1 mH
• Vas: 68.83 l
• Mms: 361 g
• Cms: 0.07 mm/N
• BL: 10 T·m
• Qts: 0.61 | Qes: 0.66 | Qms: 7.4
• Sensitivity: 88 dB

Dimensions

• A: 390 mm
• B (Cut-out): 353 mm
• C (Overall Depth): 210 mm
• D (Magnet Depth): 188 mm

Enclosure Recommendations

Both sealed and ported enclosures are designed for the SS 15 D2. The following recommendations provide a good starting point for SPL-oriented setups and powerful music playback.

Sealed Box (Closed)

• Net Enclosure Volume (Vb): 80 l (2.83 cu.ft.)
• System Resonance (Fc): 42 Hz
• Qtc: 0.83
• External Dimensions (W x H x D): 700 x 480 x 330 mm
• Mounting Cut-out: 353 mm
• Material Thickness: 19 mm

Panel Cut-out (Sealed)

• A: 700 x 480 mm – 2x
• B: 700 x 292 mm – 2x
• C: 442 x 292 mm – 2x

Reflex Box (Ported)

• Net Enclosure Volume (Vb): 120 l (4.24 cu.ft.)
• Tuning Frequency (Fb): 38 Hz
• External Dimensions (W x H x D): 900 x 480 x 380 mm
• Mounting Cut-out: 353 mm
• Material Thickness: 19 mm
• Port Inner Diameter: 160 mm
• Port Length: 220 mm

Panel Cut-out (Reflex)

• A: 900 x 480 mm – 2x
• B: 900 x 342 mm – 2x
• C: 442 x 342 mm – 2x

Special Features

• 75mm dual voice coil (2+2 Ohm), 4-layer winding on a ventilated former for high thermal reserve (up to 2400 W Peak).
• Double-layer spider with progressive characteristic for consistent centering even with long-term use.
• Multi-layer foam surround for large excursion – ideal for SPL/DB contests.
• Reinforced suspension and tinsel leads for high mechanical stress.
• Large-sized ferrite magnet unit for precise control.
• 12 AWG, high-current, nickel-plated push terminals for secure connection.
• Unpressed paper cone with cotton fiber additive for good sensitivity.

Installation & Compatibility

With a 353 mm cut-out dimension and 210 mm mounting depth, the SS 15 D2 fits into common 15-inch mounting locations. Thanks to the 2+2-ohm dual voice coil, you can wire it to 1 ohm or 4 ohms – suitable for powerful monoblocks in the 1200 W RMS range.