Technics SB-G90M2 Speaker System

To reproduce the sound of music with a high S/N ratio, sources of all undesirable or unwanted sound have been eliminated completely.
To that end, the balanced driver mounting architecture adopted by the previous SB-G90 model was further optimised through the extensive CAE analysis and the speaker mount baffle was newly developed for the secure mounting of the speaker units. In addition, the rigidity of the entire cabinet was strengthened to take advantage of the balanced driver mounting architecture. The strength and shape of each and every one of the parts composing the coaxial speaker was reviewed painstakingly in order to remove unwanted vibrations and noise as completely as possible. What’s more, a sound path structure is provided inside the cabinet. This new and unique structure effectively eliminate standing waves that cause a resonance peak.

Balanced Driver Mounting Architecture

Unwanted vibrations generated by the speaker mount baffle have been further reduced by improving the vent holes using CAE and by allowing the one-piece woofer amount baffle to penetrate the bottom board for achieving higher rigidity. What’s more, the optimised vent holes improve the distribution of sound radiated from the back sides of speakers for enhanced response. In addition, the coaxial speaker mount baffle is separated from the woofer mount baffle to eliminate the mutual interference.
Together, they further enhance the crispness of sound and three dimensional presentation of sound field.

Standing Wave Termination Structure

A resonance called standing wave is usually generated inside the speaker cabinet by the sound of a certain frequency determined by the cabinet size. The most common method to eliminate the standing wave is to install a sound absorbing material inside the cabinet. However, since sound absorbing material also absorbs sound at frequencies other than the one that generates a standing wave, it somewhat removes dynamism or vividness from the reproduced sound.
As a countermeasure, a sound path structure is provided at the bottom of the woofer cabinet to guide the standing waves. As a countermeasure, a sound path structure is provided at the bottom of the woofer cabinet to guide the standing waves. Sound absorbing material is installed at the location in the sound path where the speed of sound becomes fastest. This enables the efficient removal of standing waves, which are the cause of resonance peaks, with a minimum amount of sound absorbing material. (Patented)
This structure allows the use of all information necessary for accurately reproducing music so the speaker system realises more vivid and natural medium- and low-frequency sound.

Other Technologies

High-rigidity Cabinet

Inside the cabinet, the speaker mount baffle is combined with a lateral reinforcement board to provide a robust cross structure and eliminate unwanted resonance.

Highly Analysed and Optimised Components

To achieve accurate sound image localisation, structural parts such as spacers and wire grommets were analysed extensively for the elimination of undesirable vibrations and noise.

Low-distortion and Long-stroke 16cm Woofer

Two long-stroke 16cm woofer units are mounted. The magnetic circuit features double magnet, long voice coil and copper ring to produce ample driving power.

Bi-Wiring Speaker Terminal

Two long-stroke 16cm woofer units are mounted. The magnetic circuit features double magnet, long voice coil and copper ring to produce ample driving power.

Advanced Phase Precision Driver with Linear Phase Plug

Smooth Flow Diaphragm

Silent Construction with Balanced Driver Mounting Architecture

High-rigidity Cabinet and Standing Wave Termination Structure

Low-distortion and Long-stroke 16cm Woofer

Bi-Wiring Speaker Terminal

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