What makes the Klipsch KL-6504-THX distinct in this architectural lineup is its quad-woofer array — four 5.25" fiberglass woofers working together to deliver music and home theater performance closer to a high-end floorstanding tower than a typical in-wall speaker, sized specifically to sit behind 42-inch and larger flat-panel TVs.
This model is catalogued in Klipsch’s “THX Ultra2” architectural product family, but its actual certification is THX® Select2 — the KL-6504-THX was one of the first THX Select2-certified in-wall speakers Klipsch produced. Select2 targets mid-sized rooms rather than the larger spaces Ultra2 is rated for, so it’s worth confirming which certification tier actually fits your room during a design consultation.
A 1" titanium tweeter mated to a symmetrical 90° x 90° square Tractrix® horn delivers flat in-room response with high efficiency and low distortion, and because the horn pattern is symmetrical, the KL-6504-THX performs consistently whether it’s mounted horizontally above a TV or vertically along a wall.
Speakers like the KL-6504-THX are typically specified around a specific TV size and wall cavity, so I’d invite you to book a design and installation consultation with our Ottawa team before any walls are opened up.
Its actual certification is THX® Select2, even though it’s grouped with Klipsch’s THX Ultra2 architectural family in our catalog. We’re happy to explain the practical difference during a consultation.
It’s sized to sit behind 42-inch and larger flat-panel TVs, with a tall, narrow footprint built to hide behind the display.