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Cambridge Audio SX-120 Powered subwoofer

Item # 779SX120MB

The modestly priced SX-120 provides deep musical bass without putting a big dent in your wallet.

The modestly priced SX-120 provides deep musical bass without putting a big dent in your wallet.

1 question - 1 answer

Item # 779SX120MB

Shop all Cambridge Audio Powered Subwoofers

About the Cambridge Audio SX-120

Eric A.

A solid subwoofer

The Cambridge Audio SX-120 offers solid, musical bass at an excellent value. Its built-in 70-watt amplifier drives an 8" long-throw woofer, which is housed in a compact enclosure with dual rear-firing ports. This sub puts out low bass all the way down to 34 Hz, and its spiked feet help keep the sound tight and controlled.

A solid subwoofer

The Cambridge Audio SX-120 offers solid, musical bass at an excellent value. Its built-in 70-watt amplifier drives an 8" long-throw woofer, which is housed in a compact enclosure with dual rear-firing ports. This sub puts out low bass all the way down to 34 Hz, and its spiked feet help keep the sound tight and controlled.

Part of a complete Cambridge Audio surround sound system

The Cambridge Audio SX Series features an array of speakers that are voice-matched for compatibility in an immersive surround sound system:

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Product highlights:

  • 70-watt RMS amplifier
  • 8" front-firing woofer
  • bass reflex cabinet with dual rear-firing ports
  • frequency response: 34-150 Hz
  • continuously variable 50-150 Hz crossover
  • rear-panel volume control
  • phase switch
  • auto on/off mode
  • line-level/LFE RCA input
  • scratch-resistant vinyl finish
Dimensions and warranty:
  • 11-11/16"W x 11-11/16"H x 13-3/4"D
  • weight: 17 lbs.
  • warranty: 5 years speaker, 3 years amp and labor
  • MFR # C11211

What's in the box:

  • Powered subwoofer
  • 6' AC power cord
  • Grille
  • 4 Spiked feet
  • Installation Guide
  • Important Safety Instructions

Customer reviews for Cambridge Audio SX-120

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More details on the Cambridge Audio SX-120

Stacey B.

Features & specs

Enclosure Ported
Woofer Size (inches) 8
Woofer Composition Treated Paper
Firing Direction Front
Amplifier Output (watts) 70
Frequency Response 34-150 Hz
Connections
Preamp-Level Inputs Stereo RCA/LFE
Speaker-Level Inputs No
Speaker-Level Outputs No
Wireless No
Controls
Low-Pass Crossover Freq 50-150
High-Pass Crossover Freq None
Phase Switch Yes
App Control No
Remote No
Other Info
Height (inches) 11-5/8
Width (inches) 11-11/16
Depth (inches) 13-3/4
Weight 17 lbs
Speaker Parts Warranty 5 Years
Speaker Labor Warranty 5 years
Amplifier Parts Warranty 3 Years
Amplifier Labor Warranty 3 Years

Product Research

Features

8" Long-Throw Woofer: The Cambridge Audio SX-120 powered sub employs a custom designed 8" long-throw woofer with treated paper cone for a smooth and even frequency response.

70W Amplifier: The SX-120 powered sub uses a 70W (RMS) amplifier for dynamic bass response.

Bass Reflex Enclosure: The Cambridge Audio powered sub features a rigid MDF cabinet, expert designed to minimize standing waves and deliver deeper, tighter bass response. The enclosure features two rear-firing ports for improved efficiency and bigger bass output.

RCA/LFE Input: The powered sub has gold plated left & right RCA line-level inputs for use with receivers having a subwoofer or stereo preamp output that do not contain their own low-pass crossover. The left channel RCA input doubles as the LFE input, if your receiver has an LFE output and a built-in low-pass crossover.

Controls: The Cambridge Audio SX-120 features individual controls to tailor volume, crossover frequency. and phase adjustment.

  • Volume Control: The SX-120 powered subwoofer has a rear-panel rotary volume control to adjust the volume of the subwoofer relative to the other speakers in the system.
  • Crossover Frequency: The SX-120 offers a continuously variable low-pass filter, adjustable from 50-150 Hz.
  • Phase Adjustment: The subwoofer's phase adjustment allows you to adjust the subwoofer's phase between 0° or 180°. If the bass sounds muddy or unclear, adjusting the phase control can sometimes strengthen the bass performance.

Auto On/Off: The SX-120's Auto On/Off feature will switch the powered subwoofer On and Off automatically by signal detection. The powered sub will enter "standby" mode when there has been signal activity for 30 minutes or more.

Applications: The SX-120 is ideally suited to complement Cambridge Audio's SX series speaker line-up and other brands of speakers, adding deep and rich bass extension to your movies and music soundtracks.

Placement Options: The powered subwoofer can be placed almost anywhere in the room as bass sound is largely non-directional. For best results, place the subwoofer on the same side of the room as your front speakers. Corner placement will increase the powered subwoofer's output.

Spiked Feet: The Cambridge Audio SX-120 powered subwoofer includes four spiked feet for added stability on your carpeted floors. The spiked feet are adjustable, in case you have uneven floors. The spiked feet add 1.25" to the height of the powered sub. The powered subwoofer can be used with or without the four spiked feet, in case you have tile or hardwood floors.

SX Series: The SX Series from Cambridge Audio is an affordable and great sounding speaker line-up that consists of one floorstanding loudspeaker (SX-80), two bookshelf loudspeakers (SX-50/SX-60), a center-channel speaker (SX-70), and a powered subwoofer (SX-120) - all sold separately.

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Customer Q&A

1 question already asked

Q
Will this work on the EVO 75?
sabino  Oct 11, 2023
1 answer
A
The SX-120 provides an option for mono subwoofer input (white, left RCA connection). It would be possible to use a single-channel RCA cable to connect the EVO 75's subwoofer output to the mono input of the SX-120.
zachary  Oct 11, 2023 (Staff)

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