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Klipsch R-40SA Dolby Atmos elevation speakers, pair review

A horn-loaded height module with its dispersion pattern published — 90 by 90 degrees — which is the figure that says where the reflection lands.

The bottom line A horn-loaded height module that publishes its dispersion — the right figure for the job — and not the sensitivity that is the brand's usual argument.

The figure that suits the job

90° × 90° dispersion. For an up-firing speaker, the pattern decides which part of the ceiling reflects and therefore where the height information appears to come from. It is a more relevant specification for this product than frequency response would be, and almost nobody publishes it.

Horn loading, and why it matters here

Klipsch uses horns throughout its range, and horns are efficient: more output for a given amplifier power. Height channels are driven by a receiver’s last and least generous amplifiers, so efficiency is worth more in this position than in almost any other.

What is missing

The sensitivity figure. It is the number that would quantify the paragraph above, and it is Klipsch’s central technical argument elsewhere. Its absence from this listing is a real omission.

The ceiling condition

Flat, hard, horizontal. Under a sloped or absorbent ceiling this speaker has nothing to reflect from, and unlike the Teufel it cannot be repurposed as a rear channel.

Where it belongs

On top of Klipsch floorstanders, in a Klipsch system, in a room with an ordinary ceiling. Inside those three conditions it is the right module; outside any of them, it is not.

Availability

On sale from 289 € to 397 € on the German, American, British, French, Italian and Spanish Amazon stores at the time of checking.

The French and Italian Amazon listings are priced above 1.6× the cheapest store, which is normally a reshipping offer rather than a local price; they are left out of the range above.

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

  • Publishes a dispersion pattern — 90° × 90° — which is the specification that decides where a reflection goes
  • Horn loading, which Klipsch uses throughout its range and which generally means high sensitivity
  • Designed to sit on top of Klipsch floorstanders from the same range

Compromises

  • No sensitivity figure in this listing, on a brand whose sensitivity is its main technical argument
  • Requires a flat, hard ceiling — the same condition as every up-firing module
  • Only works as a height module, unlike the Teufel which also serves as a rear

Specifications

HornTractrix, 90° × 90° dispersion — stated
UseDolby Atmos elevation, ceiling reflection — stated
RangeUses technology from the Reference Premiere range — stated
TypeSold as a pair — stated
SensitivityNot stated in this listing, though Klipsch designs are typically high
Amazon referenceB09PPKX16G (same reference on 6 Amazon marketplaces)
EAN0743878046366

Questions people actually ask

What does 90° × 90° dispersion mean?

The horn directs sound into a square-ish cone 90 degrees wide in both planes. On an up-firing speaker that determines the size and position of the ceiling patch the sound reflects from, which in turn decides where the height effect appears to come from.

Why do Klipsch speakers use horns?

Horn loading raises efficiency: the speaker plays louder for a given amplifier power. In a height channel driven by a receiver's last amplifiers, that is a practical advantage rather than a philosophical one.