About: Hertz MPBX 300 S2 12" 500W RMS Shallow-Mount Subwoofer Enclosure Box 

MPBX 300 S2 ultra-shallow sealed enclosure is specifically optimized to deliver all the MPS 300 S2 subwoofer performances. The enclosure structure features incomparable robustness thanks to 15 mm (0.59 in.) wood thickness. Internal sound-absorbing material virtually increases the box's volume and reduces acoustic resonances. Panel-to-panel internal bracing with solid corners minimizes resonances and round corners ease the placement.  2S² (2 Sides/2 Sounds) design provides the ability to choose between Down-Firing mounting, through supplied feet with Hook-and-loop inserts, to increase the low-frequency extension, and Up-Firing installation to obtain more punch and definition. SSP (Sub Smart Plug) features both Plug-&-Play terminal block and traditional push terminals providing bulletproof connection and quick release.

Enclosure Features:

• Ultra-shallow sealed enclosure specifically optimized to deliver all the MPS 300 S2 subwoofer performance
• 15 mm (0.59 in.) wood thickness for incomparable robustness
• Panel-to-panel internal bracing with solid corners to minimize resonances
• Round corners to ease the placement
• Internal sound-absorbing material virtually increases the box’s volume and reduces acoustic resonances.
•  2S² (2 Sides/2 Sounds) design provides the ability to choose between Down-Firing mounting, through supplied feet with Hook-and-loop inserts, to increase the low-frequency extension, and Up-Firing install to obtain more punch and definition
• SSP (Sub Smart Plug) features both Plug-&-Play terminal block and traditional push terminals providing bulletproof connection and quick release
• Robust screw-less mesh grille included featuring adjustable logo position suitable for reverse install
• EID: Scan, Discover, Identify

Driver MPS 300 S2 Features:  

• Ultra-shallow structure compatible with minimum-depth enclosures
• 500W continuous power handling, 2Ω impedance
• Air Intercooling Revolution (A.I.R.) prevents air-compression-related limitations
  
• Die-cast aluminum frame­
• Unrivaled mechanical excursion, +20% over traditional designs
• Six-layer copper voice coil (38mm/1.5 in.) ensures high thermal capacity 

Specifications:

• Size: 12" (300 mm)
• Power Handling - Continuous: 500 Watts
• Power Handling - Peak: 1000 Watts
• Impedance: 2 Ohm
• Voice Coil Ø: 38 (1.5)
• Frequency Response: 25 - 400Hz
• Magnet size (D x D x H): 6.28" x 2.17" x 1.42" (134 x 55 x 36 mm)
• Weight of one component: 10.8 kg (23.8 lbs.)
• Magnet: High density flux ferrite
• Cone: Polypropylene
• Xmech: 20 mm
• Depth: 4.65" (118 mm)
• Voice Coil Type: Single