Rank #5 in Best Bookshelf Speakers 2026: 10 Ranked, From £94.99
Cambridge Audio SX-50 Compact Passive Bookshelf Speakers, Matte Black
Price and rating as shown on Amazon when we collected them. Both change.
The Cambridge Audio SX-50 is a pair of passive bookshelf speakers in matte black, listed at £149.00 and sitting at number five in this guide. Cambridge Audio describes a two-way design with a 135mm treated paper cone woofer and a 25mm silk dome tweeter, a rear bass reflex port, bass extension down to 50Hz and an 8 Ohm load that the listing pairs with amplifiers rated between 10 and 100 watts. The Amazon page carries a 4.6 rating from 197 ratings, and the reviewers who wrote the entries below describe using them in small rooms and with inexpensive amplifiers.
The SX-50 earns its place here because of what its own specification table does to itself. One field states "Is Waterproof: True"; another states "Water Resistance Level: Not Water Resistant". One says the control method is touch; another says there is no controller. A "Battery Average Life" of "1 days" is listed for a speaker that runs off an amplifier. And the rating is given as 4.6 from 197 ratings, while the star breakdown further down the same page accounts for only 100 of them. Everything on this page comes from the Amazon listing, not from testing of our own.
How those 197 ratings break down
An average hides its own shape. This is the spread behind the 4.6 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £149.00 |
|---|---|
| Amazon rating | 4.6 out of 5 from 197 ratings |
| Drivers | 135mm treated paper cone woofer, 25mm silk dome tweeter |
| Amplifier compatibility | 10-100W, 8 Ohm speaker outputs (as listed) |
| Bass extension | Down to 50Hz, rear bass reflex port |
| Dimensions and weight | 16.1D x 22.5W x 24H cm, 3 kg |
| Waterproofing | Is Waterproof: True, but Water Resistance Level: Not Water Resistant (as listed) |
| Battery Average Life | 1 days (as listed) |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“Excellent speakers have paired them with a Fosi BT20A Pro amp and a Cambridge Audio Minx x201 subwoofer. The sound from these including the bass even pre the subwoofer is fantastic, with good clarity, detail and separation of vocals and instruments and their tones where needed. I did get these due to their size for my study but they never made it past the lounge, will certainly be buying this setup again for my study (probably minus the sub as the study is a much smaller room).Would fully recommend the speakers and linked the the Fosi amp it makes for a great sounding system, without breaking the bank.”
Verified purchase“Sounds luscious in a small room even with a cheap ampEasy to set up - Just plug into an amp with banana cables”
What it is up against
The rivals it was ranked against in Best Bookshelf Speakers 2026: 10 Ranked, From £94.99.
Questions people ask
Are the Cambridge Audio SX-50 speakers active or passive?
They are passive bookshelf speakers, so they need an amplifier. Cambridge Audio lists compatibility with amplifiers rated between 10 and 100 watts and 8 Ohm speaker outputs.
How much do the Cambridge Audio SX-50 speakers cost?
The Amazon listing shows £149.00 for the pair in matte black.
Can the Cambridge Audio SX-50 speakers be used outdoors or in a bathroom?
The listing gives no consistent answer: one field says "Is Waterproof: True" and another says "Water Resistance Level: Not Water Resistant".
Do the Cambridge Audio SX-50 speakers have a battery?
They are passive speakers that run from an amplifier, but the listing still includes a "Battery Average Life" field of "1 days".
How low does the bass go on the Cambridge Audio SX-50?
The listing says the rear bass reflex port and optimised woofer magnet system extend low frequencies down to 50Hz.
What size room are the Cambridge Audio SX-50 speakers meant for?
Cambridge Audio lists them for smaller rooms, shelves, desks and media units, and the listing's uses field names small rooms, home cinemas and surround sound systems.
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