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Rockford Fosgate P1S8-15
Punch P1 15" 8-ohm subwoofer
Rockford Fosgate P1S8-15
Our take on the Rockford Fosgate P1S8-15 by Crutchfield's Jo Greene
Rockford Fosgate showcases their fanatical commitment to sonic excellence in the Punch Series of speakers, amps, and subs. If you like to listen to potent, powerful music — and feel it too — Punch components will give you impressive sound that'll stand out in a crowd.
Engineers at Rockford Fosgate designed the P1S8-15 15" subwoofer to dish out the kind of powerful low end you crave in your ride. Its responsive paper cone is reinforced with the same Kevlar® fibers used in bulletproof vests so you get the best of both worlds — warm bass that's exceptionally hard-hitting. Rockford Fosgate uses a new technique to attach the oversized rubber surround to the cone that increases available cone area up to 25%, so this sub can push more air for even bigger bass.
The P1S8-15 sub features an extended pole piece and bumped backplate that leaves more room for heavy excursion, so it'll hit deeper lows without "bottoming out." This sub works equally well in a sealed or ported enclosure, so you can choose the kind of bass you want for your system.
What's in the Box:
- 15" SVC 8-ohm subwoofer
- Trim ring
- Eight 1-1/8" Allen head screws
- 4mm Allen head bit
- Installation/Operation manual (English/ French/ Spanish/ German)
- 15" 8-ohm subwoofer
- Kevlar® reinforced paper cone
- nitrile butadiene rubber (NBR) surround
- hybrid StampCast basket provides strength while minimizing weight and resonance
- Vertical Attach Surround Technique (VAST™) increases cone area
- power range: 50-250 watts RMS (500 watts peak power)
- frequency response: 24-250 Hz
- sensitivity: 87.5 dB
- top-mount depth: 7"
- sealed box volume: 1.3-3.5 cubic feet
- ported box volume: 2.66 cubic feet
- warranty: 1 year
- Our 60-day money-back guarantee
Features and Specs
|Cone Material||Kevlar reinforced paper|
|Ideal Sealed Box Volume (cubic feet)||1.58|
|Ideal Ported Box Volume (cubic feet)||2.66|
|Port diameter (inches)||4|
|Port length (inches)||8|
|Dual Voice Coil||No|
87.5 dB at 1 watt
|Frequency Response||24 - 250 Hz|
|RMS Power Range (Watts)||50-250|
|Peak Power Handling (Watts)||500|
|Top Mount Depth (inches)||7|
|Bottom Mount Depth (inches)||N/A|
|Cutout Diameter or Length (inches)||13 3/4|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
Overview: The Rockford Fosgate Punch P1S8-15 is a 15-inch subwoofer with a single 8Ω voice coil. The sub features a StampCast steel frame, quick-release compression terminals, a Kevlar fiber reinforced paper cone, and NBR surround (Nitrile Butadiene Rubber). An anodized aluminum voice coil former and spider venting help keep the subwoofer cool.
Steel Basket: The P1S8-15 subwoofer features a StampCast steel basket for added rigidity.
Compression Terminals: The P1S8-15 features spring post terminals which accommodate speaker wire up to 10 gauge.
CEA-2031 Compliant: Power handling on the P1S8-15 subwoofer conforms to CEA-2031 industry standards. This means the subwoofer has the capacity to handle 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 PVC 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. The trim ring increases the mounting height of the woofer to 7/8 of an inch.
Sealed Box: Rockford recommends a sealed enclosure with an optimum internal volume of 1.58 cubic feet (from 1.3 to 3.5 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 2.66 cubic feet using one 4" diameter x 8" long port; this yields a tuning frequency of 34.4 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 34 Hz).
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