DD AUDIO 715F D4

DD AUDIO 715F D4

The DD Audio 715F D4 is a 15-inch (38 cm) subwoofer from DD Audio's 700 series, designed for discerning audiophiles seeking extremely powerful, high-quality bass. Here are its detailed technical specifications:

General Characteristics:

• Speaker size: 15 inches (38 cm)
• Impedance: Dual 4-ohm coil (D4)
• RMS power: 1500 watts
• Maximum power: 4500 watts

Thiele/Small parameters:

• Fs (resonance frequency): 30.25 Hz
• Qms (mechanical quality factor): 7.353
• Qes (electrical quality factor): 0.6854
• Qts (Total Quality Factor): 0.6269
• Vas (equivalent air volume): 62.47 liters
• Xmax (maximum linear displacement): 22 mm
• Xmech (MM): 100 mm

Dimensions and Construction:

• Piston diameter: 12.75 inches
• Engine diameter: 7.562 inches
• Engine depth: 4 inches
• Woofer displacement: 0.22 cubic feet
• Outer diameter of the chassis: 15.375 inches
• Outer diameter of the chassis with seal: 15.563 inches
• Mounting diameter: 13.875 inches
• Mounting depth: 9.375 inches
• Shipping weight: 46 pounds

Recommended Speakers:

• Bass-reflex speaker: 3.0 - 6.0 cubic feet