RBH Signature Reference 661-SF/R – Stand Mount Bookshelf Speaker, white cabinet, silver drivers

RBH Reference 621 – Stand Mount Bookshelf LCR Speaker

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Description

RBH Sound Reference 621 – Freestanding Bookshelf Speaker

The Reference 621 provides an abundance of full, precise, room-filling sound with its dual 6½-inch reference aluminum cone woofers with solid aluminum phase plugs and AMT tweeter. Ideal for bookshelves or wherever traditional, floor-standing speakers just aren't practical; the Reference 621 is equally adept for audiophile music systems as well as multi-channel home theater installation.

  • (1) 1.38" x 1" (35mm x 25mm) Reference AMT tweeter
  • (2) 6½" aluminum woofers, solid aluminum phase plugs
  • Dual rear ported cabinet
  • 6 ohm impedance
  • 2-way crossover
  • 50–40,000 Hz (±3dB) Frequency Response
  • 90 dB Sensitivity
  • Made in USA
  • 10 Year Limited Warranty

Highlights & Key Technologies

RBH Sound Reference Driver Package
The Reference 621 further enhances the capability of the Signature 621 by replacing the signature drivers with the RBH Sound Reference Driver package. This upgrade includes the RBH Reference AMT tweeter — measuring 1.38" x 1" (35mm x 25mm) — and dual RBH Reference 6½-inch aluminum cone woofers with solid aluminum phase plugs, available in silver or black-anodized. This driver package also includes an enhanced crossover circuit. Together, these changes extend clarity, detail, and imaging relative to the standard Signature 621.

Vented HDF Cabinet
The Reference 621 cabinet is constructed from ¾-inch High Density Fiberboard (HDF) with heavy internal bracing, individually hand assembled and tested in the USA, and is available in satin black or white. The cabinet features dual rear ports. A magnetically attached black or white high quality fabric grille with a ½" MDF frame is included.

Series Compatibility
The Reference 621 provides timbre-matched options for multi-channel sound across all freestanding, bookshelf, on-wall, and in-wall products in the SF, SV, and SI Series.

Details & Specifications

MODEL INFORMATION
Model: Reference 621
Series: Signature Reference Series | Freestanding Speaker
System Type: Freestanding Loudspeaker

DRIVE UNITS
(1) 1.38" x 1" (35mm x 25mm) AMT Tweeter; (2) 6.5" Aluminum Cone Phase Plug Woofer

PERFORMANCE
Frequency Response: 50Hz–40kHz (±3dB)
Sensitivity: 90 dB
Recommended Power: 75-250 Watts
Impedance: 6 Ω
Tweeter Protection: Yes

CROSSOVER
Crossover Frequency: 2700Hz
Crossover Slope: 24dB/Octave

CABINET
Cabinet Material: High Density Fiberboard (HDF), ¾" construction, Satin Black or Satin White
Grille: White or Black high quality cloth

PHYSICAL SPECIFICATIONS
Finished Dimensions: 7-3/4" x 22-3/8" x12-3/8" (197 x 569 x 315mm)
Weight: 21 lbs (9.53 kg)

WARRANTY
10 Year Limited

ORIGIN
Designed, Engineered, Tested and Assembled in USA from American and Imported Parts

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