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Klipsch R-52C review

A center with 5.25 inch woofers on a Tractrix horn, 95 dB sensitive, 89 Hz to 21 kHz ±3 dB.

In brief

Ninety-five decibels of sensitivity and the only frequency response on this shelf published with a tolerance. It needs one-eighth the amplifier power of the quietest speaker here. Key figures: Center channel speaker with dual 5.25 inch spun-copper IMG woofers and a 1 inch aluminum LTS tweeter mated to a 90 by 90 degree square Tractrix horn, with a published frequency response of 89 Hz to 21 kHz plus or minus 3 decibels, 95 dB sensitivity at 2.83 volts and 1 meter (3.3 ft) and 400 watts power handling. Amazon.com had an offer at $147 on October 25, 2026.

What the maker puts in writing

All five bullets, in full:

  • “Dual 5.25” Spun-copper IMG woofers”
  • “1” Aluminum lts tweeter mated to a 90x90 square tractrix Horn”
  • “89Hz - 21kHz plus /- 3dB”
  • “Sensitivity 95dB at 2.83V/1m”
  • “400 watts power handling”

Five bullets, four of them numbers. On a shelf where nine products publish no sensitivity and twelve publish no tolerance, that is the whole argument.

Plus or minus three decibels is the only one on this shelf

89Hz - 21kHz plus/- 3dB.

That tolerance is what turns a range into a measurement: output stays within three decibels of flat across the band.

Now compare the ranges quoted without one:

Goldwood AA35CB, $38.88 — “70Hz-20 kHz”, no tolerance Goldwood PSC-43, $42.88 — “85hz-25 kHz”, no tolerance Micca MB42X-C G2, $89.99 — “55Hz-20kHz”, no tolerance Micca OoO — “usable bass extension down to 60 Hz”, an honest hedge

Three of those claim to reach lower than this speaker’s 89 Hz. And every speaker produces something at its claimed floor — forty decibels down and inaudible, but something.

This is the only floor on the shelf you can rely on, and the right benchmark to judge the others against.

Eighty-nine hertz is also perfectly sensible for a center channel: in any properly configured system the receiver’s bass management sends everything below about 80 Hz to the subwoofer anyway.

Ninety-five decibels, and what it is worth

Sensitivity is how loud a speaker plays on one watt at one meter, and every 3 dB is a doubling of required power.

this 95 dB · Goldwood AA35CB 92 dB · Goldwood PSC-43 89 dB · Micca MB42X-C G2 86 dB · nine products publish nothing

Nine decibels of spread is a factor of eight. So a 25-watt amplifier drives this as loudly as a 200-watt one drives the Micca.

That decides whether a modest receiver has headroom on a loud scene. And the risk that actually kills speakers is too little power: an amplifier pushed past its limit clips, producing high-frequency energy that burns tweeter coils out.

With 400 W of stated handling and 95 dB of sensitivity, this speaker is very hard to hurt.

One note on the measurement. It is quoted as “95dB at 2.83V/1m” rather than 1 W/1 m. Those are the same thing at 8 ohms — 2.83 volts into 8 ohms is exactly one watt. Into 4 ohms it would be two watts, which would inflate the figure by 3 dB. Klipsch does not publish the impedance here, so take the 95 dB as an 8-ohm figure and verify if you can.

The horn is where much of that efficiency comes from

1” Aluminum LTS tweeter mated to a 90x90 square Tractrix Horn.

A horn does two things at once.

It aims the treble. Ninety degrees horizontally and ninety vertically — the only coverage angle published on this shelf. On a center speaker that is exactly the right thing to control, because the audience is spread sideways: a bare dome narrows sharply as frequency rises, so the person in front hears a different balance from the person at the end of the sofa.

And it raises efficiency. A horn couples the small, light dome to the much larger mass of air in the room far more effectively than a bare dome can, which is where a good part of the 95 dB comes from.

Two other products here use the principle without publishing an angle: JBL’s HDI horn and Neumitech’s waveguide, which describes the result honestly as “predictable”.

LTS is Klipsch’s own tweeter design — Linear Travel Suspension — intended to keep the dome’s motion true to the signal and reduce distortion.

Spun-copper IMG, and the width

IMG is injection-molded graphite: light and rigid, which pushes cone breakup above the crossover point. The copper color is cosmetic and a Klipsch signature.

Dual 5.25 in is the second largest driver pair on this shelf, after the Triangle’s 6.5 in at $459.

And the cabinet is 18.7 in (476 mm) wide — large for a TV unit, though well short of the JBL’s 29.1 in (739 mm), which is twenty-nine inches. At 7.64 in (194 mm) tall it needs more clearance than the Polk’s 3.50 in (89 mm) or the Yamaha’s 5.20 in (132 mm).

6,123 g is published.

What is not published

No impedance, which matters doubly here because the sensitivity is quoted in volts.

No enclosure type and no port direction. On a center speaker — the one that always lives in a confined space — that is the question worth asking: a rear port shoved into a cabinet is choked. Triangle’s BRC2 alone publishes front-facing vents; Goldwood’s AA35CB and Dayton’s C40 are sealed and do not care.

No crossover slope, where three Miccas publish one. No off-axis treatment named, though the horn addresses half of that problem directly.

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

Buying it in the United States

Amazon.com lists this model (ASIN B07FK41FGL) and had an offer at $147 on October 25, 2026. The price box on this page is refreshed live and takes precedence over that figure.

In its favor, and against it

Strengths

  • The only frequency response on this shelf published with a tolerance — which is what makes it a measurement
  • Ninety-five decibels, so it needs an eighth the power of the quietest speaker here
  • A Tractrix horn with its coverage angle published, which is exactly what a center speaker needs

Compromises

  • No impedance published, and its sensitivity is quoted in volts rather than watts
  • Eighty-nine hertz is the highest bass floor among the products that publish one
  • No enclosure type, no crossover slope and no port direction

Specifications

Frequency response89 Hz – 21 kHz ±3 dB — THE ONLY TOLERANCE ON THIS SHELF
Sensitivity95 dB at 2.83 V / 3 ft (1 m) — the highest here by three decibels
What that meansOne-eighth the amplifier power of the 86 dB speaker here
WoofersDual 5.25 in spun-copper IMG
Tweeter1 in aluminum LTS on a 90° × 90° SQUARE TRACTRIX HORN
Horn angle90° × 90° — the only coverage angle published on this shelf
Power handling400 W
Measurement note2.83 V equals 1 W only at 8 ohms; impedance is not published
Weight13.5 lb (6.1 kg)
Dimensions7.64 × 18.7 × 7.28 in (194 × 476 × 185 mm)
Published bulletsFive, and four of them carry numbers
ImpedanceNot published
Enclosure typeNot published
Crossover slopeNot published
Amazon referenceB07FK41FGL
EAN0743878035490

What gets asked most

Why is the ±3 dB more important than the numbers either side of it?

Because without it a frequency range is not a measurement. Klipsch publishes "89Hz - 21kHz plus/- 3dB", and the tolerance is what turns a claim into a fact: output stays within three decibels of flat across that band. Now compare a range quoted without one. Goldwood’s AA35CB at $38.88 publishes "70Hz-20 kHz" — nineteen hertz lower than this, with no tolerance. Goldwood’s PSC-43 publishes "85hz-25 kHz". Micca’s MB42X-C G2 publishes "55Hz-20kHz". None carries a limit, and every speaker produces *something* at its claimed floor — forty decibels down and inaudible, but something. So on paper three cheaper speakers reach lower than this one. In fact this is the only floor on the shelf you can rely on, and the one you should compare the others against.

How much does 95 dB sensitivity save me?

Seven-eighths of the amplifier power, against the quietest speaker here. Sensitivity is how loud a speaker plays with one watt at one meter, and every 3 dB is a doubling of required power. The published figures on this shelf: this at 95 dB, Goldwood AA35CB 92 dB, Goldwood PSC-43 89 dB, Micca MB42X-C G2 86 dB. Nine decibels of spread is a factor of eight in power — so a 25-watt amplifier drives this as loudly as a 200-watt one drives the Micca. That is not a marginal difference; it decides whether a modest receiver has headroom on a loud scene, and it matters because the real danger to a speaker is too little power, not too much: an amplifier pushed past its limit clips, producing high-frequency energy that burns tweeter coils out. Most of this sensitivity comes from the horn, which couples the tweeter to the air far more efficiently than a bare dome.

What does the 90 by 90 Tractrix horn do?

It aims the treble into a defined angle, and it is the only coverage figure published on this shelf. Klipsch states "1" Aluminum LTS tweeter mated to a 90x90 square Tractrix Horn" — meaning the horn is designed to spread high frequencies across 90 degrees horizontally and 90 vertically, and not much beyond. On a center speaker that is precisely the right thing to control, because the audience is spread sideways across a sofa: a bare dome narrows sharply as frequency rises, so the person directly in front hears a different balance from the person at the end. A horn makes coverage even across the stated angle. It also raises efficiency substantially, which is where much of the 95 dB comes from. Two other products here use the principle without publishing an angle: JBL’s HDI horn and Neumitech’s waveguide.

Against the center channel speakers in the same bracket

Between center channel speakers at a nearby price. Shown: what they all state. A half-filled column says nothing.

Model Price Frequency responseSensitivityTweeterPower handling
Klipsch R-52C $147 89 Hz – 21 kHz ±3 dB — THE ONLY TOLERANCE ON THIS SHELF95 dB at 2.83 V / 3 ft (1 m) — the highest here by three decibels1 in aluminum LTS on a 90° × 90° SQUARE TRACTRIX HORN400 W
Yamaha NS-C210BL $140 Not publishedNot published7/8 in balanced dome — about 0.87 in (22 mm), between the two common sizes hereNot published
Sony SS-CS8M2 $178 Not publishedNot publishedHigh-precision soft dome, size not publishedNot published
Micca MB42X-C G2 $90 55 Hz – 20 kHz (no tolerance published)86 dB at 1 W / 3 ft (1 m) — the lowest published on this shelf0.75 in silk dome100 W

What these center channel speakers do not share

  • If price decides: Micca MB42X-C G2, at $90.

Who should pick this one, among center channel speakers

A modest amplifier and a wide sofa — the sensitivity and the horn angle are the reasons

Our buying guides that pick it

What buyers actually choose

Amazon reports what buyers took in the month before this page was last checked: at least 300.

The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.

Sources

Specifications: the manufacturer sheet and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.

The method applied to these center channel speakers