Skip to content

JBL Cinema SB 550 3.1 soundbar with built-in subwoofer review

A 3.1 bar with the subwoofer inside it — the third channel is a dedicated centre, which is the specification that answers the dialogue complaint.

The bottom line The bar to buy when the problem is dialogue: a real centre channel in one box, without the second cabinet and the second mains socket.

What the third number buys

3.1. Three channels around you and a subwoofer. The third is a dedicated centre, and that is where a film’s dialogue lives. It is the difference between a bar that makes the television louder and one that makes speech intelligible.

Why the subwoofer being inside is a feature here

One box, one power cable, one thing to place. A separate wireless subwoofer reaches lower and needs a socket and a corner. In a room where the television sits on a sideboard and nothing else fits, the integrated design is the one that gets used.

What the listing does not publish

A power figure with conditions. That is common on soundbars and it means this bar cannot be compared on power with one stating “W RMS into 8 ohms” — and this page will not treat an unconditioned figure as though it were one.

The format support

Dolby Audio. Not Atmos, not DTS:X. On a bar at this price that is honest rather than deficient: the formats it decodes are the ones that arrive from most sources, and a badge it does not carry is a badge it does not claim.

What to check on your television

That the audio output is set correctly. A television sending stereo to a 3.1 bar wastes the centre channel entirely, and that setting is the most common reason a new bar disappoints.

Availability

On sale from 141 € to 179 € on the German, French, Italian and Spanish Amazon stores at the time of checking.

Not found on the American and British Amazon stores, where the buy link falls back to a local search rather than to a page that does not exist.

Prices and availability are what Keepa reported on the date this page was updated; both move.

Prices quoted in this text were read on 4 September 2026. The live price is at the top of the page.

What we like, and what we don't

Strengths

  • A genuine centre channel, which is what most people are actually buying a soundbar to fix
  • One box: the subwoofer is inside, so there is nothing else to place or power
  • Bluetooth streaming, so the bar has a use when the television is off

Compromises

  • A built-in subwoofer cannot reach as low as a separate cabinet, whatever the tuning
  • No power figure with stated conditions in this listing
  • Dolby Audio rather than Atmos: the format list is basic

Specifications

Channels3.1 — stated; the third channel is a dedicated centre
SubwooferBuilt into the bar — stated
FormatsDolby Audio — stated
WirelessBluetooth music streaming — stated
PowerNot stated with conditions in this listing
Amazon referenceB0CXJJY1M1 (same reference on 4 Amazon marketplaces)
EAN1200130009174

Questions people actually ask

Why does 3.1 matter more than 5.1?

Because the third channel is the centre, and most of a film's dialogue is mixed to it. A 2.1 bar reproduces the centre as a phantom image between its drivers, which works from the middle seat and degrades as you move. Surround channels add ambience; the centre adds intelligibility.

Is a built-in subwoofer enough?

For most rooms and most content, yes — it removes the bass work from the small drivers, which is most of what a subwoofer does for clarity. What it cannot do is reach the lowest octave, and a separate cabinet does that better because it has more air behind the driver.