Alpine R2-W10D4 10" R-Series "R2" Subwoofer, Dual 4-Ohm, 750 Watt RMS

The new R-Series subwoofers now feature larger, double-stacked magnets that contribute more motor force for deeper bass and tighter bass control. An integrated Faraday ring minimizes distortion for cleaner bass output. A Kevlar-treated cone ensures durability in the subwoofer for reliable performance, even at high volumes. A new Polypropylene/ceramic composite dust cap ensures rigidity while also providing incredible internal damping. The new R-Series subwoofers contain a Dual Voice Coil (DVC) with easy configuration jumpers that allow for flexible applications. A new “EZ-Change” twist-lock grille mounting system makes it easy to install and remove an optional grille without mounting screws for added protection to the cone. The new R-Series subwoofers contain Alpine’s High Amplitude Multi-Roll (HAMR) Surround Technology. The R-Series subwoofers are High-Resolution Audio Compliant. Rated at 750W RMS (2250 peak power handling), the R-Series subwoofers will provide deep bass output.

Key Features

• Dual Voice Coil (DVC) Subwoofers with Configuration Jumpers
• Frequency Response (0/-3dB): 26Hz-200Hz
• Sensitivity (1W/1m): 82.4dB
• Nominal Impedance: 2Ω (4+4) or 4Ω (2+2)
• 65mm voice coil
• CTA-2031 compliant
• Mounting Depth: 6” (152mm)
• Cutout Size: 9-1/16” (231mm)
• XMax: 20mm
• Magnet Weight: 123 oz
• Push-Type Speaker Terminals (Up to 8AWG Wire Size)
• Polypropylene/Ceramic Composite Dust Cap
• Kevlar Reinforced Pulp Cone High-Performance subwoofers
• Twist-Lock Grille Mount System
• High-Amplitude Multi-Roll (H.A.M.R.) Surround
• Hi-Res Audio Compliant (High-Resolution Audio Playback)
• Large Double-Stacked Magnets
• 750W RMS/2250W Peak Power Handling

General Specifications:

• • Size: 10”
• • Dimensions: 9.72” x 9.72” x 5.92”
• • Frequency Response: 26Hz - 200Hz
• • Power Range: 300W - 750W RMS
• • Power Handling: 750W RMS / 2250W Peak
• • Magnet Weight: 123 oz
• • Voice Coil Diameter: 65.5 mm (2.6”)

BOX SPECS

• SEALED BOX RANGE:
• Net Internal Volume: 0.4 - 0.85 cubic ft
• RECOMMENDED SEALED BOX:
• External Dimensions: 12” x 12” x 10.5”
• Gross Internal Volume: 0.58 cubic ft
• Net Internal Volume: 0.50 cubic ft
• D2 - F3, Qtc: 44 Hz, 0.70
• D4 - F3, Qtc: 42 Hz, 0.78
• VENTED BOX RANGE:
• Net Internal Volume: 0.75 - 1.3 cubic ft
• Fb, Tuning: 35-39 Hz
• RECOMMENDED VENTED BOX:
• External Dimensions: 13” x 11.5” x 25.25”
• Gross Internal Volume: 1.58 cubic ft
• Vent Area (W x H): 15 square in (10” x 1.5”)
• Vent Length: 19.5”
• Vent Displacement: 0.25 cubic ft
• Net Internal Volume (Vb): 1.25 cubic ft
• D2 - F3, Ripple, Fb: 29 Hz, 6.0 dB, 37 Hz

THIELE-SMALL PARAMETERS

• • Sensitivity (1W/1m): 82.8 dB
• • DC Resistance (Re): 3.5∆ + 3.5∆
• • Free Air Resonance (Fs): 32 Hz
• • Equivalent Stiffness: 18.2 L
• • Mechanical Q (Qms): 6.50
• • Electrical Q (Qes): 0.52
• • Total Q (Qts): 0.48
• • Cone Area (Sd): 333 square cm
• • Linear Excursion (Xmax): 20 mm
• • Mechanical Travel (Xmech): 70 mm