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SA-CS9 Active Subwoofer with Bass Reflex
$249.99
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$249.99
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- 9.84 in MRC cone-type active subwoofer
- Bass reflex enclosure for distortion-free, low-frequency sound
- Rigid, premium audio component construction
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Is the Sony SA-CS9 a powered subwoofer, or do I need a separate amplifier?
The SA-CS9 is an active subwoofer with a built-in amplifier rated up to 115 W of power output, so you don't need a separate power amp to drive it. Its electrical circuits susceptible to vibration are located outside the cabinet for clear, powerful bass sound.
How does the bass reflex design on the SA-CS9 improve sound?
The bass reflex ducts suppress unwanted noise and improve low-frequency sound reproduction, so you hear deep, powerful bass from music and movies. The enclosed structure is designed to keep sound pure and natural.
What size driver does the SA-CS9 use, and how does it affect the bass?
The SA-CS9 features a 9.84 in (25 cm) cone diaphragm that can move a larger volume of air, producing powerful low-end resonance that makes bass sound rich and authentic. It reinforces low-frequency sounds in movies and music for a great multi-channel home theater experience.
What is a Mica Reinforced Cellular (MRC) cone and why does it matter?
Unlike paper cones that flex and deteriorate over time, Mica Reinforced Cellular (MRC) fiber woofers are rigid and hold their shape even when moving at high pressure and speed. This lets you drive the bass harder without compromising audio quality.
Is the SA-CS9 suitable for a home theater setup?
Yes, the SA-CS9 is designed to reinforce low-frequency effects in multi-channel home theater systems, enhancing impact in movie soundtracks and depth in music playback. It's part of Sony's 5.1.2ch Home Theater CS Speakers Lineup and is compatible with High-Resolution Audio.
How does the SA-CS9 keep bass tight and free of distortion?
Suppressing cabinet vibration is vital for tight, accurate bass, so unwanted vibrations are handled by acoustically absorbing waves from the rear pressure of the unit and damping vibrations within the cabinet. Designers optimized the type and layout of sound-absorbing materials to keep cabinet vibration to a minimum.
Is the SA-CS9 a good fit for smaller rooms?
Yes, the SA-CS9 is powerful yet compact, making it perfect for easy installation in tight spots. Its reduced baffle area minimizes sound field distortion for optimum clarity and precision.
What finish does the SA-CS9 have?
The SA-CS9 has a smart black finish that blends with most contemporary interiors. Its wood veneer retains its shape well, ensuring the sound won't be influenced by changes in temperature and humidity.
How much does the Sony SA-CS9 Active Subwoofer cost?
MSRP is listed as $249.99. Given that, these models can go on sale from time to time, and there are several other opportunities to save on price like through their group discounts for education, healthcare and military/veterans (ID.me & Unidays) along with their free loyalty program that gives up to 5% back in points.
*FAQ generated on 07/23/2026. Financing, pricing and promotions may no longer apply.