Klipsch RP-504CB II 5.25″ Reference Premier Center Channel Speaker, Black, (Each)


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  • 1″ LTS (Linear Travel Suspension) titanium diaphragm tweeter with Tractrix® horn
  • Four 5-1/4″ Cerametallic™ cone woofers
  • Frequency response: 50-25,000 Hz (± 3dB)
  • Bass-reflex design with rear-firing Tractrix port
  • Magnetic grille protects drivers and looks stylish
  • Furniture-grade ebony vinyl with scratch-resistant design and satin-painted baffles
  • Aluminum binding post speaker terminals with audiophile-grade internal speaker wiring
  • Cork pads on bottom add stability and security while helping decouple the speaker from surfaces

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Product Description

Klipsch RP504CB II Reference Premier Quad 5.25″ Center Black

Top-tier center-channel performance from Klipsch

Klipsch’s Reference Premiere speaker line was one of my go-tos as a Crutchfield Product Advisor. For 2022, the company has revamped the line and added a slew of new driver enhancements. The RP504CB II is the new RP lineup’s flagship centre channel speaker, with an updated tweeter and improved driver motors.

Refined horn and updated tweeter

The most important speaker in a home theatre system is the centre channel speaker. It handles two important aspects of a film’s soundtrack: dialogue and centre channel effects (like explosions). Klipsch improved the tweeter on the speaker for better home theatre performance than ever before.

The vented housing of the 1″ LTS (Linear Travel Suspension) tweeter helps to reduce standing waves, which can degrade sound quality. It’s housed in a Tractrix® horn with a widened mouth for improved soundstaging and directivity. To keep the highs smooth and non-fatiguing, the horn has a soft silicone face and a unique phase plug.

Punchy drivers for maximum impact

Both sides of the central tweeter are flanked by two 5-1/4″ Ceremetallic woofers. Larger woofers give sound effects like explosions plenty of punch. Metallic woofers aren’t new to Klipsch speakers, but the motor structures behind the cones have been significantly improved.

Each woofer has a voice coil that is 70% larger for improved control, speed, and accuracy. The woofers also have new aluminium shorting rings, which help to reduce distortion and allow the drivers to handle slightly more power.

A ported cabinet for deeper bass

The RP504CB II’s cabinet features a rear-firing Tractrix port that contributes to the speaker’s deep bass response. The horn shape of the port encourages more efficient airflow into and out of the cabinet, reducing port noise and low-frequency distortion.

It is critical to consider where and how you will position your centre channel speaker. Because this speaker has a ported cabinet, it should not be placed against a wall or against the back of your entertainment centre. Instead, I recommend pulling the speaker away from the wall to give it some “breathing room.” The bass response of the speaker will appreciate it.

Additional information



Bass Reflex

Tweeter Type

Tractrix Horn

Tweeter Size (inches)


Woofer size (inches)


Connector Type

Binding post

Power Range

up to 150


96 dB

Impedance (Ohms)


Frequency Response

50-25k Hz

Height (inches)


Width (inches)


Depth (inches)



36.3 lbs



Bracket Included