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Variants
The Rockford Fosgate Punch 15" P1 delivers deep, low‑distortion, punchy bass and strong output for the price. It shines in both sealed and ported boxes but benefits from correct enclosure design and adequate amplifier power.
Buyer confidence
85%Highlights
- 1 Year Warranty
- Kevlar fiber reinforced paper cone
- StampCast basket with integrated spider venting
- Rubberized ABS trim ring with optional grille
Key specs
Full specs- Speaker Connector
- Dual 10 AWG compression
- Voice Coil Type
- Single Voice Coil
- Re (Ohms)
- 3.60
- Subwoofer Type
- Standard
- Sd (cm2)
- 876
- Voice Coil Diameter
- 2.0" (51.6 mm)
- Power Handling (Watts RMS)
- 250 Watts RMS 500 Watts Max
- Nominal Impedance
- 4-Ohm
Key specs
Full specs- Speaker Connector
- Dual 10 AWG compression
- Voice Coil Type
- Single Voice Coil
- Re (Ohms)
- 3.60
- Subwoofer Type
- Standard
Highlights
Overview- 1 Year Warranty
- Kevlar fiber reinforced paper cone
- StampCast basket with integrated spider venting
Review highlights
Based on customer reviewsRockford Fosgate Punch 15" P1 4-Ohm SVC Subwoofer — deep, tight, hard-hitting bass
The Rockford Fosgate Punch 15" P1 delivers deep, low‑distortion, punchy bass and strong output for the price. It shines in both sealed and ported boxes but benefits from correct enclosure design and adequate amplifier power.
What buyers praise
- Deep, low‑distortion bass response
- Tight, punchy performance
What to watch for
- Performs best in a properly sized sealed or ported enclosure—air leaks or incorrect porting reduce performance
Overview
The Punch P1S4-15 is a 15" car subwoofer from Rockford Fosgate with a 4‑ohm single voice coil and 250 Watts RMS power handling. It combines a Kevlar-reinforced paper cone with VAST technology to increase cone surface area and bass output.
Best for
- Drivers and installers who want a 15-inch subwoofer for high-impact car bass in standard sealed or vented enclosures
- where a high surface-area cone and traditional Punch sound are preferred.
Key points
- Size: 15-inch subwoofer
- Voice coil: Single 4‑ohm
- Power handling: 250 Watts RMS
- Cone: Kevlar fiber reinforced paper
- VAST technology: increases cone surface area up to 25%
- Included: soft-touch ABS trim ring to accommodate a grille insert
Fit and use
Designed for vehicle installations that can accommodate a 15" driver and an appropriate sealed or ported enclosure. To realize the subwoofer's performance, match it with an enclosure and amplifier suited to a 15" driver and the unit's 250W RMS rating.
What to know
The P1S4-15 is part of the Punch family with a long-running design focus on impactful bass. VAST increases effective cone area for more output without increasing outside diameter. The product includes a soft-touch ABS trim ring for grille installation; confirm vehicle clearance and enclosure space before purchase.
Highlights
Key features
- 1 Year Warranty
- Kevlar fiber reinforced paper cone
- StampCast basket with integrated spider venting
- Rubberized ABS trim ring with optional grille
- High-temp voice coil with spun-laced Nomex® re-inforcement collar
- Linear spider with embedded 16 AWG tinsel leads
- Extended pole piece and bumped vented backplate
- Custom 10-AWG nickel plated push terminals
- Protective PVC textured magnet cover
- Klippel Verified
- Anodized Aluminum Voice Coil Former
- FlexFit Basket - Subwoofer
More info
Manufacturer details
Rockford Fosgate P1 15” is the first in a family of famous “Punch” subwoofers. The P1S4-15 features a 4-Ohm voice coil, 250 Watts RMS power handling, and can accommodate a grille insert using the included soft touch ABS trim ring.
Additional details
Rockford Fosgate P1 15" are the first in a family of world famous subwoofers called "The Punch". During their inception in the 1980's, they quickly became "The Woofer of Choice" for fanatic car audio systems, with a continued tradition today. Kevlar fiber reinforced paper cones deliver bass impact you can feel, and our VAST technology increases surface cone area up to 25%. Best in standard sealed and vented enclosures. Includes soft touch ABS trim ring.
Technologies
Klippel Verified
To adorn the ‘Verified with Klippel’ mark, the qualifying company’s loudspeaker engineering personnel must be
Anodized Aluminum Voice Coil Former
Two things generally happen when voice coils heat-up. They can generate heat close to the melt-down temp of their
FlexFit Basket - Subwoofer
The slot mounted frame pattern of the FlexFit basket utilizes slots (where feasible) instead of single screw sized
Stitched Tinsel Leads
Multipoint "periodic" stitched lead wire technique reduces the mass of each tinsel lead and spreads stress and
CEA-2031
Power handling on Rockford Fosgate speakers conform to CEA-2031 industry standards. This means your speaker has
Specs
Specifications
25
| Speaker Connector | Dual 10 AWG compression |
| Voice Coil Type | Single Voice Coil |
| Re (Ohms) | 3.60 |
| Subwoofer Type | Standard |
| Sd (cm2) | 876 |
| Voice Coil Diameter | 2.0" (51.6 mm) |
| Power Handling (Watts RMS) | 250 Watts RMS 500 Watts Max |
| Nominal Impedance | 4-Ohm |
| Size | 15" |
| Qts | 0.55 |
| Fs (Hz) | 23 |
| Magnet Weight (oz) | 60 oz. (1.70 kg.) |
| Vas (Liters) | 191.5 |
| Qms | 3.20 |
| Qes | 0.62 |
| SPL (dB @ 1w/1m) | 87 |
| Mounting Depth | 6.98 in. (177.2 mm) |
| SPL (dB @ 2.8v/1m) | 90 |
| Le (mH) | 3.14 |
| Cutout Diameter | 13.85 in. (351.8 mm) |
| Xmax (mm) | 9.0 |
| Woofer Displacement | 0.148 cu. ft. (4.2 Liters) |
| Shipping Weight | 16.3 Lbs. (7.39 kg) |
| Sealed Box Volume (Vb) | 1.58 cu. ft. (44.7 Liters) |
| Vented Box Volume (Vb) | 2.66 cu. ft. (75.3 Liters) |
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Installation resources
Wiring diagrams
6
Wiring Diagram #1
Source: Rockford Fosgate
Wiring Diagram #2
Source: Rockford Fosgate
Wiring Diagram #3
Source: Rockford Fosgate
Wiring Diagram #4
Source: Rockford Fosgate
Wiring Diagram #5
Source: Rockford Fosgate
Wiring Diagram #6
Source: Rockford Fosgate
Box Advisor
Sealed Enclosure
- Recommended volume
- 1.58 cu ft
- Volume range
- 1.3 cu ft to 3.5 cu ft
- Dimensions
- 21 in W x 18 in H x 10 in D
- F3
- 42.4 Hz
- Qtc
- 1.06
- Port / ID
- 54 in
- Subwoofer size
- 56 in
- Impedance
- 1 ohm
- Power handling (RMS)
- 250 W
Vented Enclosure
- Recommended volume
- 2.66 cu ft
- Volume range
- 2.25 cu ft to 3 cu ft
- Dimensions
- 28 in W x 18 in H x 12 in D
- F3
- 34.5 Hz
- Tuning (Fb)
- 34.4 Hz
- Port / ID
- 56 in
- Subwoofer size
- 56 in
- Impedance
- 1 ohm
- Power handling (RMS)
- 250 W
Support
Return Authorization
If you bought this product from Onkar Electronics, use the Contact Us page on the Onkar Electronics website and we will help with return authorization and warranty support. If you purchased it from another dealer, contact that authorized dealer first for return assistance.
Popular Questions
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