---
product_id: 236923300
title: "Cambridge Audio SX120-70 Watt Active Subwoofer for HiFi or Home Cinema System - Custom Designed 8\" Driver and Fully Adjustable Sound - Matte Black"
brand: "cambridge audio"
price: "$213.89"
currency: USD
in_stock: false
url: https://www.desertcart.us/products/236923300-cambridge-audio-sx120-70-watt-active-subwoofer-for-hifi-home
store_origin: US
region: United States of America
---

# Auto Detect 8" Driver 70W Power Cambridge Audio SX120-70 Watt Active Subwoofer for HiFi or Home Cinema System - Custom Designed 8" Driver and Fully Adjustable Sound - Matte Black

**Brand:** cambridge audio
**Price:** $213.89
**Availability:** ❌ Out of Stock

## Summary

> 🎉 Feel the Beat, Own the Room!

## Quick Answers

- **What is this?** Cambridge Audio SX120-70 Watt Active Subwoofer for HiFi or Home Cinema System - Custom Designed 8" Driver and Fully Adjustable Sound - Matte Black by cambridge audio
- **How much does it cost?** $213.89 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/236923300-cambridge-audio-sx120-70-watt-active-subwoofer-for-hifi-home)

## Best For

- cambridge audio enthusiasts

## Why This Product

- Trusted cambridge audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unleash the Bass:** Experience deep, rich sound with a powerful 70W amplifier.
- • **Crafted in the UK:** Trust in award-winning British engineering for superior audio performance.
- • **Minimalist Aesthetic:** Elevate your space with a sleek, matte black design that complements any decor.
- • **Precision Engineering:** Enjoy smooth frequency response with a custom-designed 8" long-throw woofer.
- • **Smart Power Management:** Save energy with the auto detect feature that activates only when needed.

## Overview

The Cambridge Audio SX120 is a 70W active subwoofer featuring an 8" driver, designed for optimal sound quality in HiFi and home cinema systems. With its auto detect feature, low distortion cabinet, and elegant design, it delivers powerful bass while conserving energy.

## Description

Full description not available

## Features

- POWERFUL BASS: active subwoofer has a 70W amplifier that provides clean, immediate power to the driver for a rich bass extension in your hifi speakers
- SMOOTH FREQUENCY: an 8’’ (20cm) long-throw bass woofer delivers an even frequency response to your home cinema sound system with impressive audio control
- AUTO DETECT: save electricity with the speaker's auto detect feature, which wakes the subwoofer speaker up when you need it and conserves power when you don’t
- LOW DISTORTION: rigid MDF hifi cabinet is modelled using CAD so that the subwoofer speaker dimensions reduce standing waves and vibration for accurate audio
- GREAT BRITISH DESIGN: home speakers with clean, understated looks and a confident, room-filling sound, designed by our award-winning hifi engineers in London

## Product Details

- **Brand:** Cambridge Audio
- **Speaker maximum output power:** 70 Watts
- **Frequency response:** 1 Hz
- **Connectivity technology:** RCA
- **Audio output mode:** Mono
- **Input voltage:** 230 Volts
- **Mounting type:** Floor Standing
- **Material:** Engineered Wood
- **Model name:** SX-120
- **Speaker type:** Woofer

## Images

![Cambridge Audio SX120-70 Watt Active Subwoofer for HiFi or Home Cinema System - Custom Designed 8" Driver and Fully Adjustable Sound - Matte Black - Image 1](https://m.media-amazon.com/images/I/719B2Wl5P5L.jpg)
![Cambridge Audio SX120-70 Watt Active Subwoofer for HiFi or Home Cinema System - Custom Designed 8" Driver and Fully Adjustable Sound - Matte Black - Image 2](https://m.media-amazon.com/images/I/81hjAhjEZoL.jpg)
![Cambridge Audio SX120-70 Watt Active Subwoofer for HiFi or Home Cinema System - Custom Designed 8" Driver and Fully Adjustable Sound - Matte Black - Image 3](https://m.media-amazon.com/images/I/81R1w7aMcLL.jpg)
![Cambridge Audio SX120-70 Watt Active Subwoofer for HiFi or Home Cinema System - Custom Designed 8" Driver and Fully Adjustable Sound - Matte Black - Image 4](https://m.media-amazon.com/images/I/71xgzDm79jL.jpg)
![Cambridge Audio SX120-70 Watt Active Subwoofer for HiFi or Home Cinema System - Custom Designed 8" Driver and Fully Adjustable Sound - Matte Black - Image 5](https://m.media-amazon.com/images/I/714XUyVhgUL.jpg)

## Questions & Answers

**Q: Will this work with a fosi audio bt30d amplifier?**
A: Hi there,

Thank you for contacting Cambridge Audio.

Yes - this can be connected to the sub out of the Fosi.

Thank you,

Sam.

**Q: Any idea of output frequency response range in hz to khz ?**
A: According to their website its 34Hz to 150Hz. (i.e. it’s purely for bass frequencies).

**Q: Have a denon amp 7.2 and keg surrounded sons Woith subwoofer can I add this as my second subwoofer as my amp has 2 subwoofer connections**
A: Yes

**Q: Would i be able to connect this to a panasonic sc-hte80? it has aux r+l aux on it. i have tried to research and i couldn't find a definitive answer.**
A: No the Aux would be an input on the system to add sound from a Tv etc not an output for a sub. If you don’t have a subwoofer output on you device. You would ge a sub with a hi-level speaker input on it. Then you wire from the speaker output on the system to the sub

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-20*