Rockville W8T4-S4 8" Shallow Mount 1000w Peak Car Subwoofer 4-Ohm Sub 250w RMS CEA Rated

$120.00 $44.95 Save 63%
Shipping calculated at checkout.
Product Description

Video of T4 Series Shallow Mount subs:

Wiring for 1 SVC 4 Ohm SUBS:

Wiring for 2 SVC 4 Ohm SUBS:

CEA Compliant Legitimate Power Ratings


Rockville W8T4-S4 8" Subwoofers feature the thinnest mounting depths available making them the best shallow-mount driver's suitable for the most intricate bass installations. Deep bass that's made to fit where standard-sized subwoofers can’t. What else can you ask for?

The Rockville W8T4-S4 subwoofers feature a 4-Ohm single voice coil. These subwoofers are engineered to deliver serious low frequency response where space is limited. Whether installed behind the seat in a compact car, pick-up truck or in a motorcycle's saddlebags, make no mistake Rockville T4™ subs will rock you!

Utilizing a sophisticated “High-BL” motor structure together with a large-diameter, progressive-roll spider provides increased linearity and superior overall sound quality. A vented core magnet motor structure with extra thick back & top plates allows for full voice-coil extended peak-to-peak excursion, creating ultra deep bass response. Engineered with a special aluminum alloy high-temperature voice coil winding around the high-mass vented pole piece, helps to keep the woofers cool even when your music gets “hot”!

The Rockville W8T4-S4 is CEA-2031 compliant and rated with an amazing 1000 watts peak and 250 watts RMS. That means you are getting 100% accurate RMS power ratings. These days lots of brands have competitions over how many thousands of watts they can write on the box of their items. The problem is you do not know what you are getting from them. It is easy to print a box that says 2,000 watts Max. Our subwoofers are rated in the same way that other famous brands rate their products. We also feel our manufacturing engineers are the best. The sound quality on our Rockville subs are just amazing. Our engineers who design the subwoofers are all in in the USA and have over 30 years experience manufacturing car audio.

If you are not happy with these, we will call tag them and take them back within 30 days of when you receive them for a full refund. On top of that you get a 1 year exchange warranty for any defects.

If you want the best value for a shallow mount car subwoofer, and you want a great quality product that sounds great, and you also want hassle free return policies, then we highly recommend these Rockville T4 subs.


  • Rockville W8T4-S4 8” 1000 Watt 4-Ohm Shallow Mount Car Subwoofer
  • Power Handling: 1000 Watts Peak Power / 500 Watts Program / 250 Watts RMS (CEA Rating)
  • Ultra Stiff Paper Composite Cone
  • 3D Molded High Gloss Acrylic Dust Cap
  • Ultra Slim, Expanded and Rolled Steel Basket
  • High Density Laminated Butyl Rubber Surround
  • High Power Strontium Magnet with Ultra Saturated, High BL Motor Gap
  • Vented Core Magnet Motor Structure
  • High Temperature Aluminum Voice Coil Former
  • Lightweight Compact Design Ideal for Any Installation
  • Magnet Protection Rubber Band
  • Dual Nickel Plated Spring Loaded Push Terminals
  • Shallow Mount Subwoofer
  • Impedance: SVC 4 Ohm
  • Cutout Diameter: 7 Inches
  • Mounting Depth: 2.5 Inches
  • Frequency Response: 39 Hz to 500 Hz
  • Sensitivity: 90dB @ 1w/1m
  • Voice Coil: 1.5” High Power Voice Coil
  • Magnet weight: 33 Oz
  • Washer/Yoke Plates: 6mm Machined Steel
  • X-Max: 8.4mm Peak-to-Peak

Enclosure Recommendations:

  • Sealed: 0.35 cu. Ft - 0.85 Cu. Ft.
  • Vented Tuned at 35Hz: Not Recommended
  • Vented Tuned at 45Hz: 1.00 cu. Ft. - 2.00 Cu. Ft.

TS Parameters


46.7 Hz




0.193 mm/N


9.990 N/A


4.24 O


3.39 O




60.092 g




1.904 mH


206.12 cm²




2.237 kg/s


11.6175 L


1.319 mH


About Rockville Quality Control Procedures:

The Rockville brand stands for Quality, Innovation and Value. All Rockville products go through the most rigorous quality control standards in the industry. Products go through months of extensive testing before they reach your hands. All user functions are tested and all internal components are tested for quality. Rockville makes products that are virtually un-breakable! Rockville is one of the only brands in its class to test every concept model for weeks or months before starting production. Once production begins, Rockville sends product engineers to their factory to quality control every line of production. During production every product is tested and on top of that Rockville goes the extra mile and has their high level product engineers do an additional quality control. They test a certain percentage of all products from the production line a second time to ensure that the quality meets their vigorous standards, and to make sure that there is never a batch of products with even a slight problem. All Rockville products are backed with a hassle free warranty.
Shipping & Returns

Row content