Product Comparison: Rockford Fosgate P1S4-12 vs Rockford Fosgate R1S4-12

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General Specifications
Rockford Fosgate
Rockford Fosgate
About the Product
Rockford Fosgate P1 12-inch subwoofers are first in a Rockford's Punch series, and a well-known addition to fanatic car audio systems. Kevlar fiber reinforced paper cones deliver bass impact you can feel, and "VAST" technology increases surface cone area up to 25%.
The Prime 12" woofers offer Rockford Fosgate performance at an unbelievable value. These models feature solid stamped steel frame, quick-release compression terminals, and a Parabolic polypropylene cone. Best of all, they work great in sealed enclosures.
Key Specs
Driver Diameter
12 in.
12 in.
Power RMS
250 watts
200 watts
4 ohms
4 ohms
Size & Weight
9 in.
7.2 in.
14.5 in.
14.2 in.
14.5 in.
14.2 in.
7.18 lbs.
3.28 lbs.
What customers say about "Size & Weight"
Rockford Fosgate P1S4-12 Punch P1 SVC 4 Ohm 12-Inch 250 Watts RMS 500 Watts Peak Subwoofer
  • Great sub for the price, installed as soon as I got the box & sounds amazing for for that size.
  • Absolutely everything suits me in it. Weight, size, sound are all perfect.
  • It looks amazing in my door, the size is exactly the same as the last sub, so it is compact and nice looking.
  • The weight of this sub shocked me, it is a heavy object. As well as subwoofer completely stopped working after 4 months.
  • The Fosgate was a little bigger than the one it was replacing so I had to cut the hole bigger.
Rockford Fosgate R1S4-12 12-Inch 150 Watt Subwoofer - 4 Ohm
  • The size and weight surprised me, this is what I needed. Awesome sub for such the money.
  • Great sound, lucky find. Very impressed fulfills all my needs. Its size looks perfect in my trunk.
  • I admire its compact size. Excellent sound for the price! Would recommend to anyone looking for accurate bass.
  • It is very light and compact, I fell in love at first sight with this subwoofer.
  • I am concerned about its light weight. This may mean that it is made of poor material and will not be able to please with a strong bass.
Amplifier Class
Max. Frequency Response
250 Hz
250 Hz
Min. Frequency Response
26 Hz
22 Hz
86 dB
90 dB
Peak Power
500 watts
400 watts
What customers say about "Audio"
Rockford Fosgate P1S4-12 Punch P1 SVC 4 Ohm 12-Inch 250 Watts RMS 500 Watts Peak Subwoofer
  • The sound has that great warm Punch, tight and fast response with definition, plus great bass extension.
  • I am very happy with this purchase because the bass has an excellent response.
  • Just sending 250-275 watts to one sub, I can literally feel the air moving in the vehicle, my shirt moves a little bit.
  • These woofers don’t need lots of power to sound great, but a top notch amp can really control a woofer for top performance and that is what it’s all about.
  • After 3 days, the low frequencies began to distort, which really upset me.
Rockford Fosgate R1S4-12 12-Inch 150 Watt Subwoofer - 4 Ohm
  • Frequency Range is perfect, and sound guality is amazing.
  • Lots of quality bass, and the frequency range finds all the bass in Low-Pass, unlike others that only get the very low.
  • They sound amazing and the punch knob i have lets me control the bass at any volume i decide to crank it up to.
  • Even though they're loud, the sound quality is very frustrating.
  • It do distortion in high volumes and sound muddy.
Linear spider, High-temp voice coil, Kevlar fiber reinforced paper cone, StampCast basket, Rubberized ABS trim ring, Protective PVC textured magnet cover, Stitched Tinsel Leads, FlexFit, Klippel Verified
Fiber reinforced painted paper-pulp cone, Laser-etched aluminum dustcap, High-temp copper voice coil, High-grade Y30 Ferrite magnet, Klippel Verified
What customers say about "Features"
Rockford Fosgate P1S4-12 Punch P1 SVC 4 Ohm 12-Inch 250 Watts RMS 500 Watts Peak Subwoofer
  • It's absolutely insane. I cannot believe that much power is coming from just one of these subs.
  • Deliver clean powerful bass at an affordable price. Excellent brand, excellent quality.
  • Put it in a vented enclosure with very little power and the thing rocks. Great purchase!
  • Great features that improved reliability and performance by reducing fatigue and possible shorting.
  • It was very difficult to mount the correct position of the subwoofer. It took a lot of time.
Rockford Fosgate R1S4-12 12-Inch 150 Watt Subwoofer - 4 Ohm
  • The structure of this sub looks a lot like my old 1991 Punch but this newer version provides lower range and seems to run very well off my old 150w Rockford amp.
  • The subs dont hit super hard, however I feel that the bass is perfectly boosted now with my system in my truck.
  • I recommend these to anyone who wants hard hitting bass and you will still be able to enjoy the actual music as well.
  • Subwoofers use anodized aluminum voice coil formers that provide superior heat dissipation.
  • Good but over power it. You are limited in power. If you exceed 100 watts it will work incorrectly.
Spring loaded
Spring loaded
What customers say about "Connectivity"
Rockford Fosgate P1S4-12 Punch P1 SVC 4 Ohm 12-Inch 250 Watts RMS 500 Watts Peak Subwoofer
  • Great base! Paired with Alpine MRV-M250 Mono V-Power Digital Amplifier. Sounds great at low volumes and REALLY loud!
  • I have it paired with the RF 150 2 channel amp and it'll surprise you. Nice tight bass and it goes pretty low.
  • Paired with the right box and amp it's great. It connects perfectly and works in my car.
  • The connection looks reliable and durable so you can not worry about it.
  • The sound sometimes disappears. I noticed that the wires in the terminals are poorly fixed.
Rockford Fosgate R1S4-12 12-Inch 150 Watt Subwoofer - 4 Ohm
  • Connected to an amplifier and it produces amazing music.
  • I can connect it to the receiver and improve the quality of music 100 times.
  • Works great with my receiver. It is pretty easy to plug in.
  • I am delighted with the ease of connection and the use of this subwoofer.
  • One spring-loaded terminal is broken and does not hold the wire.
Warranty / Certifications
Manufacturer Warranty
1 year(s)
1 year(s)
Other Information

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