T1D2/D415

The Rockford Fosgate T1D215 and T1D415 subwoofers from the high-performance Power T1 series impress with their powerful bass reproduction, high power handling, and exceptionally rugged construction. With 1,000 watts RMS and a maximum power handling capacity of 2,000 watts, these 38 cm (15-inch) subwoofers are ideal for high-end car audio systems that require ample power reserves and deep bass response.

The patented VAST™ (Vertical Attach Surround Technique) technology enables an effective diaphragm area that is up to 25% larger. The Kevlar-reinforced paper diaphragm, the heavy-duty Santoprene surround, and the solid die-cast aluminum basket ensure stability and controlled diaphragm movement even at high volume levels. A 76-mm voice coil with an anodized aluminum carrier, the dual magnet system, and optimized ventilation ensure high thermal and mechanical durability.

Thanks to the dual voice coil and the SWIFT™ connection system, these subwoofers can be flexibly adapted to a variety of amplifier configurations. The T1 Series is suitable for both sealed and bass-reflex enclosures.

Technical Specifications

• Manufacturer: Rockford Fosgate

• Series: Power T1

• Model: T1D215 / T1D415

• Type: Passive High-Performance Subwoofer

• Size: 38 cm (15 inches)

• RMS Power Handling: 1,000 watts

• Maximum power handling: 2,000 watts

• Voice Coils: Dual Voice Coil (DVC)

• Voice coil diameter: 76 mm (3 inches)

• Coil height: 42.8 mm

• Diaphragm material: Kevlar-reinforced paper diaphragm

• Dust-proof cap: Anodized aluminum

• Bead: Heavy-duty Santoprene rubber

• Centering: Double Nomex centering spider

• Basket: Ventilated die-cast aluminum basket

• Voice coil former: Anodized aluminum

• Magnet system: Dual magnet with 2 × 110 oz

• Magnet weight: approx. 6.24 kg

• VAST™ technology for an increased effective membrane area

• Flex Fit™ basket design with flexible mounting options

• SWIFT™ Connection System for Impedance Configuration

• Maximum linear displacement (Xmax): ±16.4 mm

• Maximum mechanical deflection: ±38 mm

• Effective membrane area (Sd): 845 cm²

• Equivalent air volume (Vas): 102 liters

• Sound pressure level (1 W / 1 m): 88 dB

• Outer diameter: 412 mm, including the decorative ring

• Installation opening: 353 mm

• Installation depth: 213 mm

• Displacement: approx. 5.4 liters

• Shipping weight: approx. 24.8 kg
  
  

Technical Specifications T1D215 – 2 × 2 ohms

• Impedance: 2 × 2 ohms

• Terminal impedance: 1 ohm in parallel / 4 ohms in series

• DC resistance (Re): 2 × 1.65 ohms

• Resonance frequency (Fs): 26 Hz

• Total Quality (Qts): 0.43

• Electrical quality (Qes): 0.46

• Mechanical quality (Qms): 6.5

• Moving mass (Mms): 364 g

• Voice coil inductance (Le): 1.8 mH

• Force factor (BL): 20.6 N/A
  
  

Technical Specifications T1D415 – 2 × 4 ohms

• Impedance: 2 × 4 ohms

• Load impedance: 2 ohms in parallel / 8 ohms in series

• DC resistance (Re): 2 × 3.25 ohms

• Resonance frequency (Fs): 27 Hz

• Overall Quality (Qts): 0.51

• Electrical quality (Qes): 0.55

• Mechanical Grade (Qms): 6.0

• Moving mass (Mms): 331 g

• Voice coil inductance (Le): 2.4 mH

• Force factor (BL): 26.2 N/A
  
  

Recommended Case

Enclosed housing:

• Recommended net volume: 63.7 liters

• Lower cutoff frequency (-3 dB) T1D215: 46 Hz

• Lower cutoff frequency (-3 dB) T1D415: 41 Hz

Bass-reflex enclosure:

• Recommended net volume: 77.9 liters

• Bass reflex ports: 2 × 100 mm in diameter

• Specified port area: 160 cm²

• Port length: 40 cm

• Tuning frequency (Fb): 35 Hz

• Lower cutoff frequency (-3 dB): 31 Hz
  
  

What's Included

• 1 × Rockford Fosgate Power T1 Subwoofer T1D215 or T1D415 (depending on the selected model)

• 1 × Protective grille with integrated decorative ring

• SWIFT™ impedance bridges, including an additional unsecured bridge

• User and Installation Manual