Klipsch RP-504C II - Ebony

Klipsch RP-504C II - Ebony Center Channel — Horn-Loaded Dialogue Authority

The Klipsch RP-504C II - Ebony center channel speaker serves as the anchor for the front of a Reference Premiere home theater setup, delivering horn-loaded vocal clarity. A larger 90° x 90° silicone composite hybrid Tractrix horn loads the 1" LTS titanium tweeter and efficiently transfers high-frequency energy into the listening area. Flanking the horn, four 5.25" Cerametallic woofers handle midrange and bass duties.

What Sets the RP-504C II Apart

Highlighting the design, an enlarged Tractrix horn geometry improves high-frequency coupling over the previous Reference Premiere generation. Behind the LTS diaphragm, a vented tweeter housing reduces standing waves. The four-woofer array and rear-firing Tractrix port grant the cabinet low-end authority down to 50 Hz, so dialogue remains anchored even with conservative subwoofer crossovers.

Driver Array — Why Four Woofers Matter for a Center Channel

Because center channels reproduce the majority of a film's vocal content, total driver surface area matters. This model employs four 5.25" Cerametallic woofers in a 2.5-way configuration for greater output and reduced distortion.

• LF Drivers: 4 × 5.25" Cerametallic woofers — high rigidity, low mass for clean midrange and bass
• With a 1" LTS titanium diaphragm tweeter, distortion is minimized for detailed highs
• The 90° x 90° silicone composite hybrid Tractrix horn delivers controlled directivity, focusing dialogue imaging for the listener

Performance Specs — Power Handling and Frequency Reach

Engineered for 600 W of power handling, this center has substantial headroom for dynamic movie soundtracks. The 50 Hz to 25 kHz frequency response ensures deep male vocals and sparkling high-frequency detail are reproduced without relying entirely on the subwoofer.

• Power Handling: 600 W — substantial headroom for dynamic peaks in movie soundtracks
• Frequency response from 50 Hz – 25 kHz extends low enough to anchor effects without subwoofer support
• Thanks to the horn-loaded design, theater SPLs are reached with modest amplifier power

Cabinet and Connectivity — Built for Real-World Installations

Additional internal bracing in the cabinet minimizes resonance that could smear dialogue. Its ebony vinyl finish and satin-painted baffle lend a furniture-grade appearance, complemented by a magnetic grille for easy attachment.

• Cabinet: ebony vinyl with satin-painted baffle and additional internal bracing — reduces resonance for cleaner dialogue
• Aluminum binding posts accept banana plugs and bare speaker wire, ensuring clean signal transfer
• Grille: magnetic, removable, with cork isolation pads on the base — shields drivers without altering the sound

Who Should Choose the RP-504C II

This model is ideal for home theater builders seeking a center channel that keeps pace with full-size Reference Premiere towers. Medium to large rooms benefit most, especially when dialogue intelligibility is a priority. Audiophiles configuring a 5.1.2 or larger Atmos layout will appreciate the horn-loaded efficiency, which allows for cinema-level SPLs without a high-wattage amplifier.

Klipsch Reference Premiere — Horn-Loaded Heritage, Second Generation

Reference Premiere from Klipsch blends the company’s signature acoustic expertise with contemporary horn technology. Now in its second generation, the RP-504C II benefits from a larger Tractrix horn and updated Cerametallic woofers, further boosting efficiency. The broader Reference Premiere II lineup was named a 2022 Editor’s Choice by Home Theater Review.