Sony SACS9 Review: Is It Worth It?

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In the Audio industry, Sony made a name of their self thank’s to their top-notch headphones, for example, their latest flagship, the Sony WH-1000XM5.

But that’s not what I am writing about today. Sony makes just about everything, and their active subwoofer, SA CS9 is what we are looking at.

Watching movies with this sony subwoofer will not be the same once you get your hands on it. The powerful bass it offers will make you feel like you are the scene of the movie, without leaving behind the surround sound.

A fully-featured subwoofer that pumps out thunderous and punchy bass. SA CS9 is another device to justify Sony’s prominent name in the audio world.

Sony SACS9

SACS9 is a subwoofer with excellent tuning choices, a compact size factor, exceptional sturdiness, and, obviously, amazing frequency range and bass.

SA CS9 Review: Superb Bass Sound with Amazing Sound Quality

Will blend anywhere, Design:

At first sight, Sony SAC S9 appears as a simple plain black box, obviously, there’s more to that. In front it has a removable grille, when removing it, you will be greeted by the navy blue speaker cone, pretty much the same one we are used to seeing on the rest of Sony’s speakers. Surprisingly enough, the driver is made out of woven fiber, which is quite uncommon. Most subwoofers are made out of paper/fabric material.

The active subwoofer will look good either with the grille on or removed, thanks to its smart black finish that will blend in any interior.

It measures 11 5/8″ x 13 5/8″ x 15 3/4″ ( Width,Height,Depth) , and it weighs 25 lbs 5 oz (11.5kg). Powerful, yet compact – making it great for installation in tight spots.

In general, there’s not much to talk about the design, it is quite plain and simple. Definitely not the selling point here.

But when you think of it, that’s not why you buying an active subwoofer right, if you want just aesthetics, get yourself a black box, if you want a black box that produces great sound and powerful bass then you go get yourself the Sony SACS9.


On the back of the subwoofer, you will find the inputs and outputs, which are: RCA input, phase and power button switches, rear port and the volume, and low pass frequency.

Something worth mentioning, being from the CS series it works great with the rest of the audio devices from this lineup. You can create a robust 5.1.2 home theater setup that is perfect for Dolby Atmos with the whole range of CS speakers.

For example, the two-tower speakers, SSCS3, SSCS8 center channel speaker, two SSCSE Dolby Atmos-enabled speakers, and two bookshelf speakers SSCS5.

Feature Rich, Performance:

Coming at an affordable price bracket, it is quite feature-packed. It contains a tunable crossover, ranging from 50 Hz to 200 Hz frequency response range, so you can tighten up the low-end. It offers precise bass reproduction and in a way that is what put’s it above its rivals.

It sports room filling sound that will compliment any home theater system.

There’s also an automatic power-saving mode, that puts the SACS9 in Sleep/Stands By mode when it doesn’t produce any sound.

And lastly, there’s the phase switch which makes sure that the sub is firing with the rest of the home theater speakers, after all what a home theater subwoofer should be capable of doing.

The amplifier comes with a 155w peak power output that is paired with a frequency response of 28-200 Hz, also due to the Micra Reinforced Cellular woofers you get a much better sound quality with precise bass reproduction.

Any form of unwanted noise is prevented further, thanks to the waves of noise that are absorbed while damping the vibrations within the cabinet, at the same time you get to hear the “oomph” noises of the incredible bass sound quality and vibrations.

The music and movies will sound immensely good once you plug this sony subwoofer. It sure sounds fantastic, it’s Sony after all. It produces thundery lower ends, yet tight, dynamic, and sensitive sound quality.

The 250mm active subwoofer promises to deliver powerful bass while the funnel membrane is able to move a large mass of air in order to produce high-performance deep resonance. Overall, the sound quality is there, especially bass, it ticks all the boxes we need in an active subwoofer sound quality.


  • Good Durability
  • Compact
  • Tuning options
  • Great frequency range
  • Superb bass sound quality


  • Power output is on the low side
  • Disliked, Grille and design
  • Audio suffers if not placed correctly

Unbeatable Value for the Money:

It is priced slightly under 160$, making it fall under the budget category. Don’t let the cheap price lie to you through, It does more than that, it exceeds both in design and functionality. Overall it will prove to be of great use to your home theater, or even as a standard desktop speaker that has a great peak power output.

You decide its usage and the Sony SACS9 will “decide” to provide you with great value.

Final Touch, Conclusions:

Sony doesn’t fail to show their expertise in the audio field with, the Sony SACS9.

It is a great subwoofer that with the help of its 10-inch foamed mica cellular reinforced woofer, it produces great bass sound quality accompanied by room filling sound. Moreover, it does that looking good and able to blend with any furniture or home theater room.

On top of all that it does it, at a great price. You will be hard-pressed to find a better subwoofer at this price point.

The only competitor, I can think of right now that can trade blows with the SACS9, would be Polk’s PSW10.

So what’s left to say is, for the price, it comes with and you don’t want to break the bank, I can give you the green light for the Sony SACS9.

Though, if you’re willing to spend a little more, a lot more options are available, and most likely better performers than the Sony SACS9 can be found.

Further Reading

Something related to subwoofers is studio monitors. You can check the most amazing studio monitors under $500.

Furthermore, you can find out what size studio monitor do you need, and you also can read something more about the differences between an active and passive subwoofers. 

Whether you’re looking for information on audio equipment, looking to learn more about how things work in the music field, or looking for reviews of products, we got you covered!



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