Diamond - DES122 - 12 inch / 300mm - 2Ω DVC 900 WRMS Power Handling

Specifications
Type: High-Performance Subwoofer
Series: Diamond Audio DES Series
Subwoofer Size: 12-inch (300 mm)
Configuration: Dual 2Ω Voice Coil (DVC)
Power Handling (RMS): 900 W
Power Handling (Peak): 1,800 W
Nominal Impedance: 2 Ω (Dual Voice Coil)
Sensitivity (1W/1m): 86 dB
Frequency Response: 28 Hz – 500 Hz
Voice Coil Diameter: 2.5-inch (63.5 mm)
Voice Coil Material: Copper Wound on Aluminum Former
Cone Material: Non-Pressed Paper Cone Reinforced with Kevlar Fiber
Surround Material: High-Roll Foam Surround
Spider: Dual Nomex Progressive Roll
Motor Structure: Heavy-Duty Ferrite Magnet
Basket: Cast Aluminum Frame (Vented)
Cooling System: Ventilated Pole Piece and Frame
Terminals: 8 AWG Nickel-Plated Push Terminals
Mounting Depth: 6.5" (165 mm)
Mounting Cutout Diameter: 11.1" (282 mm)
Overall Diameter: 12.6" (320 mm)
Weight: 19.5 lbs
Enclosure Compatibility: Sealed or Ported (Optimized for Ported Use)
Recommended Sealed Volume: 1.0 cu. ft.
Recommended Ported Volume: 1.75 cu. ft. (Tuned to 35 Hz)
Warranty: 1-Year Manufacturer Warranty

Performance Specs
• Designed for deep, controlled bass response with high power handling.
• Dual 2Ω voice coil configuration allows flexible wiring options (1Ω or 4Ω).
• Kevlar-reinforced cone provides strength and rigidity for low distortion.
• Optimized for ported enclosures to achieve maximum low-frequency output.
• Progressive-roll spider ensures long linear excursion and precise control.

Key Features
• Dual 2Ω Voice Coils – Enables multiple wiring configurations for amplifier matching.
• 900 W RMS Power – Handles high continuous power for daily or SPL use.
• Kevlar-Reinforced Cone – Lightweight, rigid, and acoustically accurate.
• Cast Aluminum Basket – Rigid structure reduces flex and resonance.
• Heavy Ferrite Motor – Provides strong magnetic force for superior control.
• High-Roll Surround – Extends excursion for deep, impactful bass.
• Ventilated Design – Improves cooling and thermal performance under load.
• Diamond Audio Engineering – Tuned for balance between power and precision.

Performance Integration Notes
• Ideal Pairing: Diamond DES1000.1D or DXM1200.1D amplifiers.
• Recommended Use: High-output subwoofer systems in cars, trucks, or marine enclosures.
• Installation Time: Approx. 1 hour.
• Pro Tip: Use 1.75 cu. ft. ported enclosure tuned to 35 Hz for ideal output and response balance.