Description
Infinite Versatility. Breathtaking Accuracy. The Ultimate Multi-Role Performer.
While many speakers are locked into a single position, the RBH Reference 661-SF/R is a versatile LCR (Left, Center, Right) monitor designed to conquer any role in a high-fidelity home theater. Thanks to its symmetrical, horizontally and vertically optimized MTM (Mid-Tweeter-Mid) driver array, this powerhouse can be oriented vertically as high-resolution left and right mains, or turned horizontally to act as a world-class center channel speaker.
By bringing RBH’s absolute finest reference-grade transducers to a compact, high-density cabinet, the 661-SF/R delivers a seamless, perfectly timbre-matched front soundstage where panning sound effects and razor-sharp dialogue blend flawlessly.
The Power of Reference Technology
The “Reference” upgrade elevates standard theater speakers to a breathtaking tier of acoustic transparency and transient speed:
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Proprietary Reference AMT Tweeter: A large, highly efficient Air Motion Transformer (AMT) ribbon tweeter sits at the acoustic center. By squeezing air rather than pushing it, this ultra-responsive driver reproduces clean, effortless high frequencies up to 40kHz with near-zero distortion and zero listener fatigue.
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Dual 6.5-Inch Reference Aluminum Woofers: Flanking the AMT tweeter are dual proprietary 6.5-inch black-anodized aluminum cone woofers. These drivers are upgraded with machined solid metal phase plugs instead of traditional dust caps. The phase plugs drastically improve off-axis midrange dispersion (crucial for keeping dialogue clear in every seat) and act as heat sinks to keep the drivers cool under heavy dynamic loads.
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Acoustically Dead HDF Cabinetry: Built with a heavily braced ¾-inch High-Density Fiberboard (HDF) enclosure rather than cheap MDF. The cabinet remains completely inert, preventing “boxy” resonances from coloring dialogue or vocals, so you only hear pure, natural audio.
Key Product Highlights
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Flawless LCR Integration: Buy three identical 661-SF/R speakers to handle your left, center, and right channels. This creates the ultimate, perfectly unified “wall of sound” behind an acoustically transparent projection screen.
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Symmetrical MTM Soundstage: The D’Appolito MTM configuration focuses vertical dispersion to reduce reflections from floors and ceilings, while keeping horizontal dispersion wide to maximize your home theater’s sweet spot.
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Compact Footprint, Massive Sound: Delivers the sheer output and dynamic weight of a floorstanding tower from a compact bookshelf design that easily integrates into custom cabinetry, shelves, or speaker stands.
