RBH Signature 621 – Stand Mount Bookshelf LCR Speaker

RBH Sound Signature 621 – Freestanding Bookshelf Speaker

The reality of a perfectly timbre-matched home theater is possible when using the Signature 621. This speaker can be used as left and right main channels for music and home theater systems, or can also be used as a center channel or surround channel. The versatile 621 utilizes dual 6½-inch aluminum cone woofers and a 1‑inch soft dome tweeter to deliver clear dialog and vibrant on-screen sound effects with superb clarity.

• (1) 1" fabric dome tweeter
• (2) 6½" aluminum cone woofers
• Dual rear ported cabinet
• 6 ohm impedance
• 2-way crossover
• 50–20,000 Hz (±3dB) Frequency Response
• 90 dB Sensitivity
• Made in USA
• 10 Year Limited Warranty

Highlights & Key Technologies

MTM Driver Configuration
The Signature 621 features a mid-tweeter-mid (MTM) configuration, combining dual 6½-inch cast aluminum basket aluminum cone woofers — available in silver or black-anodized — with a centrally positioned 1-inch fabric dome tweeter with tweeter protection. The two-way crossover is set at 2700 Hz with a 24 dB/Octave slope. This configuration combines the power of multiple drivers for greater dynamic response and directivity, making the Signature 621 equally suited as left and right main channels, a center channel, or surround channels in home theater applications.

Vented HDF Cabinet
The Signature 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.

SF Series Compatibility
The Signature 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: Signature 621
Series: Signature Series | Freestanding Speaker
System Type: Vented / LCR 2-way Speaker

DRIVE UNITS
(2) 6-1/2" (165mm) cast aluminum basket, aluminum cone (silver or black-anodized)
(1) 1" (25mm) Fabric Dome Tweeter

PERFORMANCE
Frequency Response: 50–20k Hz (+/- 3 dB)
Sensitivity: 90 dB (2.83V @ 1 Meter)
Recommended Power: 75–200 Watts
Impedance: 6 Ohms
Tweeter Protection: Yes

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

CABINET
Cabinet Material: High Density Fiberboard (HDF), ¾" construction, heavy internal bracing
Cabinet Color: Satin Black or White
Grille: White or Black high quality fabric, ½" MDF frame, magnetically attached

PHYSICAL SPECIFICATIONS
Finished Dimensions: 7-3/4" x 22-3/8" x 12-3/8" (197 x 569 x 315mm)
Weight: 30.65 lbs (13.9 kg)

WARRANTY
10 Year Limited

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