Rockville RWS12CA Subwoofer Review

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Quick Overview





  • For the size, bass output is good
  • Easy to setup
  • Affordable and good value


  • Durability issues
  • Bass output could be bigger
  • Newer models can run a bit more

If you’re a fan of electronic music, heavy rock or hip hop - or, really, if you’re a bass lover of any kind - you might want to consider adding a subwoofer to your vehicle’s sound system.

Any subwoofer, regardless of quality, will significantly amplify the bass capacity in your vehicle.

If you’re particular about your sound, though, and if you’re interested in getting the greatest value for your purchase, then you’re going to want to a product that gives you more for less. If that’s you, then you might want to consider looking at the Rockville RWS12CA Subwoofer.

Rockville RWS12CA Subwoofer

The Rockville RWS12CA Subwoofer is a relatively small (12 inches) amplified subwoofer, which, in spite of its size, has an RMS capacity of 400 Watts RMS. That (400 RMS) is a number that can compete with larger, newer models, and it’s a huge number.

If you haven’t had a subwoofer before, a sub with a capacity like this is a good place to start.

If you already have a sub and/or have had one in the past, you’ll know that 400 RMS is a serious number. The RWS12CA is no joke in terms of sound and bass capacity.

Who is this product for?

The Rockville RWS12CA Subwoofer is for everyone. If you own a subwoofer now or have owned one in the past, the RWS12CA won’t disappoint.

It has enough RMS capacity to please the serious fan, and it’s going to run you a lot less than models that do just as much, and, in some cases, models that do much less. 

Another advantage to the RWS12CA is the size; it’s small enough to fit almost anywhere you want it.

While it packs enough of a punch bass-wise for the experienced consumer, it’s also affordable, and, crucially for new owners, it’s reasonably easy to put together.

This Rockville model comes with a helpful guide to help new users through assembly, which most users seem to respond positively toward. It’s not hard to use, and it’s not hard to assemble.

All things considered, it’s safe to say that this model is a good bet both for the experienced user and the novice buyer.

What’s included?

The subwoofer

Rockville RWS12CA Slim 1200 Watt 12" Amplified Powered Car Subwoofer Enclosure

The amp

Rockville RWK81 8 Gauge Complete Amp Installation Wire Kit with RCA CA

If you’ve owned a subwoofer before, you’ll know that most subwoofers have two parts: the subwoofer proper, and the amp, which gives the subwoofer the energy it needs to operate. With this particular Rockville model, you’re going to need to attach the amp to the subwoofer.

Some packages come with the subwoofer and amp attached to one another, some don’t, and it isn’t a huge deal one way or the other.

If you’re a novice user and you’re planning to install the product yourself, you’ll generally be better off doing less (rather than more) assembly, but Rockville makes installation possible—even for the novice user--with this model and the guidebook that they’ve included with this kit.

All told, Rockville sets every sort of user up well with this set, whether novice or not.

Overview of features

 The Rockville RWS12CA features notably in three major areas, two of which have to do with the hardware itself, one of which has to do with the business side of the equation: (1) bass capacity, (2) size, and (3) value.

This Rockville amp, working at a cool 400 RMS, is going to give you a lot of bass capacity. This capacity is extra remarkable when you consider that the subwoofer is only 12 inches long.

What’s more is that, at a very reasonable price, this thing is a steal, especially considering its high level of performance.

How to get the most out of it

Once the subwoofer is installed, you’re in pretty good shape, but getting to the point of installation is of course sometimes a challenge. When you open the box, you’re going to be confronted by a number of cords, and seemingly unrelated, disparate parts.

Most if not all user reviews indicate that assembly is achievable, even for the uninitiated user, but it’s still going to take some doing. Every consumer should be in good shape if they follow the user guide well.


  • High bass output relative to size
  • Good value
  • User-friendly setup


  • Newer models can run a bit more
  • Some users report durability issues
  • A little lower bass output than other models


Skar Audio D4 Subwoofer

This is (probably) the next step up from this Rockville model. It’s more complex to assemble, but it’ll give you a lot more bass. It’ll also cost a little bit more.

Kenwood KSC-SW11 Subwoofer

This is (probably) the first step down from the Rockville model we’ve been reviewing. It’s going to give you a lot less bass output, but it also require little to no assembly, and features a lovely use-friendly remote. It’s not quite as good of a value as the Rockford model, but the pricing is still competitive.


For the emboldened novice, or for anyone looking to add a little (but not a lot) of bass to their ride without too much hassle, this model is an excellent choice. It won’t break the bank, it is easy to assemble (relatively speaking), and it will give users excellent value.

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