Alpine R2-SB12V Single Type R2 12-in Subwoofer in Vented Enclosure

The new R2-Series subwoofers now feature larger, double-stacked magnets that contribute more motor force for deeper bass and tighter bass control compared to the previous generation.ProLink™ is unique to Alpine and allows you to link two R2-SB12V enclosures together using an optional KTX-H12 Linking Kit (sold separately) to create a dual subwoofer-enclosure.Drawing inspiration from the sleek, tapered lines and clean silver finish of the Alpine Halo Display, the R2-SB12V shares the same unique, curved edges outlined by a silver trim and a metallic front baffle for a matching system aesthetic.The ported enclosure design features an optimized vent and rounded internal port edges that maximize the output performance of the subwoofer.Made from 3/4" medium density fiberboard (MDF) with internal edge bracing, the R2-SB12V is sturdy with a rugged, yet stylish black carpet cover and brushed aluminum finish on the metallic front baffle.The R2-SB12V includes a preloaded R2-Series R2-W12D4 12" subwoofer that's turned to 35Hz for optimized performance with Alpine's R2-Series sound system line.Dual 4Ω voice coils are wired in parallel for a 2Ω load that's compatible with the R2-Series R2-A75M Mono Power Amplifier.Gold-plated binding post terminals allow for speaker wire, ring terminal, or quick disconnect banana plug connections from your amplifier's output.

Key Features

• Groundbreaking Alpine Halo Design
• Vented Enclosure Tuning Frequency: 35Hz
• Sensitivity 85dB
• ProLink™ ported enclosure design
• Optimal Sound Performance
• 750W RMS Power Handling
• Includes preloaded R2-W12D4 12” R2-Series subwoofer
• CARB compliant 3/4-inch MDF construction
• Premium black carpet
• Silver Alpine embossed side logo badge
• Brushed aluminum finished metallic front baffle
• 17” W x 14.625” H x 15” D
• Dual 4Ω Voice Coils Wired in Parallel for a 2Ω Load (Compatible with R2-A75M)
• 12 Gauge OFC Speaker Box Wire
• Binding Post Terminal Cup
• Threaded Subwoofer Mounting Inserts (for reversible subwoofer orientation)
• 2Ω Impedance
• Frequency Response: 24-200Hz

General Specifications:

• • Size: 12”
• • Weight: 50 lbs
• • Dimensions: 17” x 14.625” x 15”
• • Frequency Response: 24Hz - 200Hz
• • Power Range: 300W - 750W RMS
• • Power Handling: 750W RMS / 2250W Peak
• • Magnet Weight: 144 oz
• • Voice Coil Diameter: 65.5 mm (2.6”)
• • Linear Excursion (Xmax): 20 mm

THIELE-SMALL PARAMETERS

• • Sensitivity (1W/1m): 85 dB
• • DC Resistance (Re): 1.9∆ + 1.9∆
• • Free Air Resonance (Fs): 29 Hz
• • Equivalent Stiffness: 36.9 L
• • Mechanical Q (Qms): 6.32
• • Electrical Q (Qes): 0.44
• • Total Q (Qts): 0.41
• • Cone Area (Sd): 479 square cm
• • Linear Excursion (Xmax): 20 mm
• • Mechanical Travel (Xmech): 72 mm