Package Includes:

• (2) Alpine RS-W12D4 12” 600 Watt RMS Shallow Car Audio Subwoofer Dual 4-ohm Slim Sub

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Description:

With an ultra-shallow subwoofer design and powerful sound output, the R-Series Shallow Subwoofers give you the best of both worlds in size and sound.

Ultra-Shallow Design - Alpine's R-Series Shallow Subwoofer delivers the same fun and loud sound you've come to expect, now in a shallow subwoofer that's designed to fit in most vehicle applications.

Extreme Output - Don't let the size fool you - the enclosures feature the same motor movement (20MM of 1-way excursion) as the full-size R2-Series Subwoofers for extreme output in a shallow woofer design.

Reliable Performance - Integrated cooling fins located in the core of the subwoofer help dissipate the heat generated by the large 4-inch voil coil for enhanced cooling reliability and hours of uninterrupted playtime.

Features:

• 12" High-Performance Shallow Bass Driver
• Neodymium Magnet
• Alpine Gen2 DD Linear Magnetic Circuit
• Aluminum Dust Cap
• Protective steel mesh grille
• Cast Aluminum Frame

Specifications:

TECH SPECIFICATIONS:

• Mounting Depth: 3.25"
• Power Range: 500W-600W RMS
• Power Handling: 600W RMS / 1800W Peak
• Frequency Response: 25Hz-100Hz
• Magnet Weight: 10.4 oz
• Voice Coil: 4" (100mm)

BOX SPECIFICATIONS:

• SEALED BOX RANGE:
  
• Net Internal Volume: 0.6 - 1.5ft3
• RECOMMENDED SEALED BOX (SMALL VOLUME):
• External Dimensions: 18" x 15" x 6.5"
• Gross Internal Volume: 0.65 ft3
• Net Internal Volume: 0.60 ft3
• F3,Fb: 35 Hz, 49 Hz
• RECOMMENDED SEALED BOX (MEDIUM VOLUME):
  
• External Dimensions: 22" x 16" x 7"
• Gross Internal Volume: 0.95 ft3
• Net Internal Volume: 0.90 ft3
• F3,Fb: 30.5 Hz, 43 Hz
• RECOMMENDED SEALED BOX (LARGE VOLUME):
  
• External Dimensions: 21" x 16" x 9"
• Gross Internal Volume: 1.25 ft3
• Net Internal Volume: 1.20 ft3
• F3, Fb: 29 Hz, 40 Hz
• Displacement Volume: 0.05ft3
• Hole Cutout Size: 11-5/8" (295 mm)

THIELE-SMALL PARAMETERS:

• Sensitivity (1W/1m):81 dB
  
• DC Resistance (Re): 3.6∆ + 3.6∆
• Free Air Resonance (Fs): 29 Hz
• Equivalent Stiffness: 43.84 L
• Mechanical Q (Qms): 7.04
• Electrical Q(Qes): 1.17
• Total Q(Qts): 1.49
• Cone Area (Sd): 572 cm2
• Linear Excursion (Xmax): 20 mm
• Mechanical Travel(Xmech): 54 mm