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Sony SACS9 10-Inch Active Subwoofer (Black)

  • mfr: SACS9
  • SKU: SACS9
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Product highlights

  • 10-inch active subwoofer for thumping bass
  • Foamed-Mica Cellular reinforced woofer
  • Minimizing vibration for tight bass
  • High-resolution audio compatible
  • Bass reflex system
  • Speaker and line level inputs 
  • Built-in phase switch
  • 115W RMS power
  • 28 to 200 Hz frequency response

Sony SACS9 10-Inch Active Subwoofer (Black)

Add bass to your home entertainment experience with the Sony SA-CS9 115W 10-Inch Active Subwoofer. Its 10-inch woofer is powered by a 115W amplifier. With a frequency response of 28 to 200 Hz, the SA-CS9 is equipped to handle a wide variety of listening material. Its controls include a phase switch, level adjustment, cut-off frequency adjust, and a power save mode. For installation flexibility, speaker and line level inputs are onboard. The woofer includes a 6.5-feet phono cord and four foot pads.

Active Subwoofer for Thumping Bass

Enjoy deep, rich bass from this powerful active subwoofer. The 9.84-inch cone diaphragm can move a larger volume of air, producing powerful low-end resonance that makes bass sound rich and authentic. The subwoofer reinforces low frequency sounds in movies and music for a great multi-channel home theater experience.

Mica-Reinforced Drivers 

CS Series speakers utilize unique, foamed (dual-layer) mica woofer diaphragms-the upper surface delivers supple and faithful sound quality, while the bottom layer leverages low weight with great strength for powerful bass response. 

Built-In Amplifier

Drive bass-heavy music and bring your party alive. This subwoofer includes a built-in amplifier with up to 115W power output. Electrical circuits susceptible to vibration are located outside the cabinet, releasing high pressure within the enclosure for a clear and powerful bass sound.

Minimizing Vibration for Tight Bass

Suppressing vibration in the cabinet is vital for tight, accurate bass. Unwanted vibrations are handled in two ways: by acoustically absorbing waves generated from the rear pressure of the unit, and damping vibrations within the cabinet itself. Designers optimized the type and layout of sound absorbing materials to keep cabinet vibration to a minimum.

Bass Reflex System

The subwoofer is built on strong foundations with an enclosed structure designed to keep sound pure and natural. Bass reflex ducts suppress unwanted noise and improve low frequency sound reproduction so you hear deep, powerful bass from music and movies.


Smart Specs
Virtual Assistant Support Not Available
Watts 115


Customer Questions
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Returns are incredibly simple. Please log into your account, find your item you wish to return and follow the prompts to make a return. If you do not have an account, click here to find your order and make a return.
You will receive a full refund when you return an item in its original manufacturer’s packaging, undamaged and unmarked. If the item you are returning is priced at less than $35, you will be charged a 15% restocking fee. Please note you will not be refunded any shipping charges. 
You have 30 days to make a return. During the holiday season, from November 1 to December 31, we extend the return window to 60 days. 
If your order has been noticeably damaged in transit, we strongly recommend that you refuse delivery and notify us immediately. Claims for missing items or items damaged in transit must be made within 48 hours of delivery. If there is carrier damage, please contact [email protected] with your order number and a description of the damage. 
Oh no! Please contact our customer service team so we can resolve the issue immediately. You can call us on 1.800.221.0828, email us at [email protected], or send us a message here.  
We do not currently offer exchanges. Please return the item you purchased within 30 days and order what you’d like instead. 
If you ordered a kit, you must return all components and accessories to receive a full refund. 
If you ordered a product that included a free item, you must include the free item with your return. If not, your return will not be accepted and you will not receive a full refund. 
We currently only offer camera repairs at our Brooklyn store. The item must be dropped off and collected in person as we do not accept shipped items for repair. For more information, please call our Brooklyn store on 1.718.431.7900. 
Most items can be returned within 30 days for a full refund. Click here to read our full return policy. 

Shipping and Returns

Same Day Shipping

All orders placed by 4PM( EST), Monday through Thursday, and by 11AM (EST) on Friday, are shipped same day. Orders placed outside these times will ship the next business day. We do not ship internationally or to Puerto Rico, Guam and other US territories at this time. For more details click here.

Free Two-Day Shipping

We offer free expedited shipping on thousands of items within the continental USA (this does not include Alaska and Hawaii).

Flexible, Easy Returns

If you're not happy with your purchase for any reason, our flexible 30-day free return policy makes it easy to get a full refund. Click here to view our return policy.

Ratings and reviews

Sony SACS9 10-Inch Active Subwoofer (Black)

Sony SACS9 10-Inch Active Subwoofer (Black) SKU: SACS9

Rated 5 out of 5 by from My Subwoofer I purchased about a month ago and just love it didn't it were big as it were but work good sounds great just love it
Date published: 2023-02-13
Rated 5 out of 5 by from SA-CS9 Base Reflex Subwoofer I have small bookshelf speakers in my basement gym. I also have an older amp with NO subwoofer jack. No problem! This handles all the shortcomings. The directions are simple. I just ran cable from the speaker OUT to the woofer IN. Then from the woofer OUT to the speakers. Don't forget to turn up the base control on the back of the woofer. Sounds Great!!!
Date published: 2022-12-21
Rated 5 out of 5 by from Great sound and value Great sound and simple to set up….well made and looks great
Date published: 2022-10-29
Rated 5 out of 5 by from Great value Needed to replace an older Sony subwoofer of 19 years Sony subwoofers is a great value for what I need. May even buy a twin to this one. My receiver supports two subs.
Date published: 2022-08-14
Rated 5 out of 5 by from Solid sound This sub has a clear and crisp powerful sound that fills up the room. .
Date published: 2022-05-23
Rated 5 out of 5 by from Excellent product it sounds great. It has a good bass sound. I recommended
Date published: 2022-04-15
Rated 5 out of 5 by from active great Every part is of high quality and performs as expected.
Date published: 2021-09-24
Rated 5 out of 5 by from Very Nice Subwoofer! I bought this for the bedroom surround system and boy it is a very nice subwoofer! It compliments the Definitive Technology front speakers and Infinity center speaker for watching TV and listening to music when I'm not feeling good and staying in bed. This Sony subwoofer would work nicely as a lower cost subwoofer for a main surround system.
Date published: 2021-08-17
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Free standard shipping included


Free standard shipping included