Klipsch Pro-6504-L THX In-Wall Speaker - Each


$1,099.00 $600.00

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  • THX® Select2 certification guarantees accurate sound
  • sized to match 42″ and larger flat-panel TVs
  • Tractrix® horn with 1″ titanium tweeter
  • four 5-1/4″ woven fiberglass woofers
  • power handling: up to 150 watts RMS (600 watts peak)
  • frequency response 46-20,000 Hz (±3dB)
  • sensitivity 92 dB
  • 8-ohm impedance
  • paintable aluminum grille
  • cutout dimensions: 27-1/8″H x 6-9/16″W
  • mounting depth: 3-5/8″

Additional information


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Speaker Placement

Front – Left / Center / Right, Front – Left / Right

SKU: PRO6504L Category: Tag: Brand:

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Tweeter Horn-loaded dome
Midrange Size N/A
Woofer Size 5.25
Cutout Size 6.5625 x 27.125
Woofer Composition Woven fiberglass
Woofer Surround Rubber
Power Range (Watts) 150
Sensitivity 92 dB
Impedance (Ohms) 8
Frequency Response 46-20kHz
Connector Type Spring posts
Bi-Amp Inputs No
Built-in Back-box No

High Efficiency: The KL-6504-THX’s titanium horn-loaded tweeter is mated to the woofers using precision-voiced high-definition crossover networks creating high sensitivity. This makes the speaker easier to drive so it requires a lot less amplification power than conventional designs. The high-efficiency design of the Kirsch in-wall speakers allows you to get much more output than most in-wall and in-ceiling speakers. Due to the long speaker wire runs that are common in whole-house audio systems, the power coming from the amplifier is significantly reduced by the time it reaches the speakers. The 92dB efficiency of this speaker means it will play much louder at low power than other less-efficient speakers.

3-Way Speaker Design: The KL-6504-THX uses a premium 1″ Titanium compression driver (tweeter) mated to an exclusive Tracery Horn, combined with four 5.25″ fiberglass woofers in a 3-way design.

  • 1″ Titanium Tweeter: The KL-6504-THX utilizes a 1″ Titanium dome compression tweeter mated to a 4″ square, Tracery Horn, which disperses the sound 90° horizontally and 90° vertically into the room. The horn design dramatically increases efficiency by enabling the speaker to produce more output using less energy.
  • Four 5.25″ Woofers: The KL-6504-THX employs four high-output 5.25-inch fiberglass woofer cones for powerful bass impact.

ABS Frame/Metal Grille: The KL-6504-THX has a sturdy ABS frame assembly and a deluxe MDF baffle with brushed aluminum fascia. The frame and metal mesh grille can be painted to match any decor.

Speaker Terminals: The speaker has a gold-plated pair of spring-loaded binding posts that can accept up to 12-gauge wire, single banana plugs, or pin connectors.

Power Specifications Note: The manufacturer has specified the maximum power handling of this speaker as 150 watts RMS (600 W Peak). Klipsch has also published a recommended amplifier power specification as 200 watts.


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  • Orders outside the 48 continental States require Second Day or Next Day Air service.
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