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Technical Highlights
- Power RMS 250 watts, impedance D2 or D4.
- Kevlar fiber reinforced paper membrane, VAST technology.
- StampCast basket, integrated spider ventilation, PVC magnetic cover.
- More technical details
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Punch P2D2-8 / P2D4-8 by Rockford Fosgate
Punch P2D2-8 / P2D4-8 is an 8 inch (200 mm) Subwoofer from Rockford Fosgate with 250 Watts RMS and 500 Watts Max. It features a Kevlar fiber reinforced paper diaphragm and VAST technology with up to 25% larger diaphragm area. The StampCast basket with integrated spider ventilation, a dual linear spider with embedded 16 AWG lead wires, and custom 4 mm² nickel-plated push terminals are included. A high-temperature voice coil with spun Nomex reinforcement collar, extended pole shoe, and compact, ventilated back plate complete the design. A textured PVC magnet cover and a diamond-cut aluminum cast ring are included; an optional grille insert is available. Mounting depth 120.8 mm, cutout diameter 181 mm, voice coil diameter 57.7 mm, magnet weight 2.06 kg, and displacement 1.2 liters; available as D2 (2x2 Ohm) and D4 (2x4 Ohm), suitable for closed and bass reflex enclosures.
- 8 inch (200 mm) Subwoofer
- 250 Watts RMS
- 500 Watts Max
- Available as D2 (2x2 Ohm) and D4 (2x4 Ohm)
- Kevlar fiber reinforced paper diaphragm
- VAST technology with up to 25% larger diaphragm area
- StampCast basket with integrated spider ventilation
- Dual linear spider with embedded 16 AWG lead wires
- Custom 4 mm² nickel-plated push terminals
- High-temperature voice coil with spun Nomex reinforcement collar
- Extended pole shoe and compact, ventilated back plate
- Textured PVC magnet cover
- Diamond-cut aluminum cast ring, optional grille insert
- Mounting depth 120.8 mm
- Cutout diameter 181 mm
- Voice coil diameter 57.7 mm
- Magnet weight 2.06 kg
- Displacement of the woofer 1.2 liters
- Suitable for closed and bass reflex enclosures
- Shipping weight 1.38 kg
- D2 (2x2 Ohm) variant:
- Nominal impedance dual 2 Ohm
- Voice coil type dual voice coil
- Qts 0.46
- Qms 5.40
- Xmax 7.8 mm
- SPL 83 dB (1 W/1 m)
- Fs 39.6 Hz
- Qes 0.51
- Vas 9.9 liters
- Re 3.40 Ohm
- Le 2.9 mH
- Sd 221 cm²
- Closed enclosure volume 6.5 liters
- Bass reflex enclosure volume 18.4 liters
- D4 (2x4 Ohm) variant:
- Nominal impedance dual 4 Ohm
- Voice coil type dual voice coil
- SPL 83 dB (1 W/1 m)
- Fs 43 Hz
- Re 6.90 Ohm
- Sd 221 cm²
- Qts 0.52
- Qes 0.58
- Qms 5.40
- Vas 9.9 liters
- Xmax 7.7 mm
- Le 4.3 mH
- Closed enclosure volume 6.5 liters
- Bass reflex enclosure volume 18.4 liters

