Rockford Fosgate P2D4-8 Punch Series 8″ Stage 2 500W Dual Voice Coil Subwoofer

Features:

• Overview: The Rockford Fosgate Punch P2D4-8 is an 8-inch subwoofer with dual 4 voice coils. The sub features a StampCast steel frame, quick-release compression terminals, a Kevlar fiber reinforced paper cone, and Santoprene surround. An anodized aluminum voice coil former and spider venting help keep the subwoofer cool.
• Dual 4 Voice Coils: The dual 4 voice coils offer wiring flexibility; when wired in parallel the woofer presents a 2 load, when wired in series the woofer presents an 8 load.
• Steel Basket: The P2D4-8 subwoofer features a StampCast steel basket for added rigidity.
• Compression Terminals: The P2D4-8 features spring post terminals which accommodate speaker wire up to 10 gauge.
• CEA-2031 Compliant: Power handling on the P2D4-8 subwoofer conforms to CEA-2031 industry standards. This means the subwoofer has the capacity to handle its rated power under continuous demand, not instantaneous power handling, that over time, can damage voice coils.
• FlexFit Basket: The Flex Fit frame utilizes slots (where possible) instead of single screw sized holes; allowing slight adjustment of the speaker when mounted.
• Trim Ring: To improve the cosmetic look, a decorative trim ring is included that mounts over the flange of the woofer. When using the cast aluminum trim ring the woofer is first mounted with four screws, then the ring is placed on top of the woofer, aligning the final four holes of the woofer with ring. The other four screws are used for these holes to mount the ring and woofer to the enclosure. Without the trim ring the mounting height of the woofer is approximately 7/8 of an inch.
• Sealed Box: Rockford recommends a sealed enclosure with an optimum internal volume of 0.23 cubic feet (from 0.2 to 0.3 cubic feet is acceptable). Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable to all types of music.
• Ported Box: Rockford recommends a ported enclosure with an internal volume of 0.65 cubic feet using one 2″ diameter x 8″ long port; this yields a tuning frequency of 38.5 Hz. Ported (or vented) enclosures typically provide better overall efficiency than sealed so they are suitable for use with smaller amplifiers, giving you more bass output from less power. However, this efficiency comes at the expense of very low frequency output (below 33 Hz).

Specifications:

• Size:8 -inch
• Impedance (Ohms): 2, 8
• Cone Material: Kevlar reinforced paper
• Surround Material: Santoprene
• Ideal Sealed Box Volume (cubic feet): 0.23
• Ideal Ported Box Volume (cubic feet): 0.65
• Port diameter (inches): 2
• Port length (inches): 8
• Free-Air: No
• Dual Voice Coil: Yes
• Sensitivity: 83 dB at 1 watt
• Frequency Response: 43 – 250 Hz
• Max RMS Power Handling: 250
• Peak Power Handling (Watts): 500
• Top Mount Depth (inches): 4 3/4
• Bottom Mount Depth (inches): N/A
• Cutout Diameter or Length (inches): 7 1/16
• Vas (liters): 9.9
• Fs (Hz): 43
• Qts: 0.52
• Xmax (millimeters): 5.8
• Parts Warranty: 1 Year
• Labor Warranty: 1 Year

• UPC: 780687332662
• Weight: 11
• Authorized Internet Dealer