Klipsch Reference Premiere 4" Bookshelf Speakers, Pair (RP400M)

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KlipschSKU: RP400MB

Sale price $398.00 Regular price$699.99

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The RP-400M bookshelf speakers offer maximum versatility without sacrificing performance from a small, yet elegant audio solution. Designed as main speakers for a compact living space or surround sound to support a Reference Premiere speaker system, the RP-400M bookshelf speakers are the ideal choice for your home theater system.


Klipsch proprietary Tractrix® horn loading technology ensures high-frequency energy of the speaker is aimed directly at the listener and reduces unwanted, artificial reverb caused by indirect sound bouncing off walls - meaning you experience the most clear, detailed, lifelike sound possible.


Klipsch Reference Premiere series speakers feature a compressed molded silicon face thats matted to the 90x90 Tractrix horn to reduces horn resonance for a smoother frequency response. Klipsch computer modeled phase plugs acts as a mechanical filter to further ensure a smooth, flat frequency response while protecting the tweeter from damage.


A vented tweeter design reduces standing waves behind the tweeter diaphragm for a smoother high frequency reproduction.

The titanium tweeter diaphragm's light weight yet rigid composition exceeds the performance of aluminum, polymer or silk tweeters.

Klipsch award-winning Linear Travel Suspension technology leverages a piston motion of the titanium diaphragm that lowers distortion and delivers real-to-life sound.

A ceramic magnet housing provides premium performance, Klipsch Reference Premiere tweeters set the standard in acoustic reproduction.


Klipsch Proprietary Cerametallic™ woofers are the speaker's signature statement for both sound and aesthetics. This extremely light, rigid materials holds its shape while being able to deliver lower frequencies with maximum efficiency.


Klipsch Cerametallic™ cones are matted to a dual-layer, copper-wound voice coil for exceptional conductivity.

Reference Premiere woofers are housed in a non-resonating, stamped-steel basket that’s secured to a large magnet motor for exceptional efficiency and low distortion, and matched to our horn-loaded tweeters for optimal acoustic execution.


The rear Tractrix ports of these speakers are perfectly matched to the cabinets and woofers, creating ideal airflow with minimal distortion or turbulence even at the lowest frequencies.

Speaker Type Indoor
Color Ebony
Number of Drivers 2
Frequency Response 52 Hz - 25,000 Hz
Sensitivity 93dB @2.83V / 1m
Power Handling 50 W
Impedance 8 ohms
Additional Information • Bass-Reflex via Rear-Firing Tractrix® port
• Premium scratch-resistant finish
• Strong, flexible removable magnetic grille
High-Frequency Drivers 1" Titanium LTS Vented Tweeter with Hybrid Cross-Section Tractrix® Horn
Bass Drivers 4" Cerametallic Cone Woofer
Crossover Information 1,500 Hz
Width 5.67 inch(es) / 14.4 cm
Height 11.73 inch(es) / 29.79 cm
Depth 7.5 inch(es) / 19.05 cm
Weight 4.08 kg (each)

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