RBH Obelisk Active – Powered Floorstanding Tower Speaker

RBH Obelisk – Active Tower Speaker

With its extraordinary debut at AXPONA 2026, the RBH Obelisk active tower took audiences by storm. With its impressive 14Hz in-room response and spectacular mid-range, Obelisk stood out as a contender for best loudspeaker system at the show. Featuring the illustrious large AMT tweeter and a 10" planar magnetic driver with dual opposing 8" long throw aluminum drivers, Obelisk is the complete package. Obelisk excels at virtually anything you throw at it. Enjoy a fully active speaker system with perfect time alignment and phase accurate reproduction for a truly immersive sound. Designed with a minimalistic footprint, Obelisk is meant to integrate into your décor with a stealth approach.

• 1" x 4.72" (25 x 120mm) Reference AMT Tweeter
• 10" (254mm) planar magnetic midrange
• (2) 8" (203mm) cast aluminum basket, aluminum cone woofers (silver or black anodized)
• 2 x 600W DSP/FIR amplifiers onboard
• HDF cabinet with acrylic polymer bezel, satin black or white finish
• 6 Ohm Impedance
• 350 Hz, 2000 Hz Crossover
• 20Hz - 35kHz (±3 dB) Frequency Response
• 92 dB Sensitivity
• 10 Year Limited Warranty

Highlights & Key Technologies

Fully Active Tower System
Obelisk is offered as a fully active speaker system featuring two 600W DSP/FIR amplifiers onboard, delivering perfect time alignment and phase accurate reproduction for a truly immersive sound. As part of the 50th Anniversary Series, this configuration provides tower performance with statement-level presence — authority, openness, and lifelike scale — capable of 14Hz in-room response.

Driver Complement
Obelisk pairs a 1" x 4.72" Reference AMT tweeter with a premium 10" planar magnetic mid-transducer for openness and detail through the critical midband. Bass is handled by two RBH 8" cast aluminum basket, aluminum cone long-throw woofers in an opposing configuration, available with silver or black anodized cones. Together with the onboard DSP/FIR amplification, the driver array enables Obelisk to excel at virtually anything you throw at it.

Cabinet, Grille & Plinth
The cabinet is constructed from High Density Fiberboard (HDF) with an acrylic polymer bezel, finished in satin black or white paint. A 1/2" HDF magnetic grille (black or white fabric) is included. The speaker is supported by spiked feet in a plinth for a minimalistic footprint that integrates discreetly into the room.

Details & Specifications

SERIES
50th Anniversary Series

SYSTEM TYPE
Active Tower Speaker

DRIVE UNITS
(2) 8” (203mm) cast aluminum basket, aluminum cone woofer (silver or black anodized)
(1) 10" (254mm) planar magnetic midrange
(1) 1" x 4.72" (25 x 120mm) AMT Tweeter

AMPLIFICATION
2 x 600W DSP/FIR Amps onboard

FREQUENCY RESPONSE
20Hz-35kHz (±3dB)

SENSITIVITY
92dB

IMPEDANCE
6 Ohms

CROSSOVER FREQUENCY
350 Hz, 2000 Hz

CROSSOVER SLOPE
80dB/Octave

CABINET DETAILS
High Density Fiberboard (HDF)
Satin Black or White Paint

GRILLE DETAILS
Magnetic Grille (black or white fabric)

FINISHED DIMENSIONS
7”W x 47”H x 15.5” D
(178 x 1194 x 394mm)

WEIGHT
105 lb (47.6 kg)

WARRANTY
*10 year limited