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Technics SB-G90M2 High-End Luidspreker
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Grand Class Vloerstaande Luidspreker SB-G90M2
Technics kondigt de SB-G90M2 aan, een nieuw high-end vloerspeakersysteem en opvolger van de SB-G90
De SB-G90M2 is het nieuwe vloerspeaker-systeem in de Grand Class-serie. Net als zijn voorganger, de SB-G90, is de nieuwe M2-versie een 3-waybass-reflex-speakersysteem met een 2-waycoaxiale driver gecombineerd met een dome-tweeter van 25 mm en een aluminium midrange conus van 160 mm. Daarnaast heeft hij twee woofers van 160 mm, ook beide gemaakt van aluminium. Dankzij nauwgezet onderzoek en precieze ontwikkeling is het technische team van Technics er opnieuw in geslaagd de kwaliteit van de audiofiele prestaties te verbeteren dankzij de kennis van mechanische constructies en evolutionair driverontwerp.
Voor de nieuwe SB-G90M2 werden grondige CAE-analyses uitgevoerd om de drivers, elementen en behuizingte optimaliseren en ongewenste trillingen en vervormingen efficiënt te elimineren. Dit heeft ertoe geleid dat Technics de al uitstekende prestaties van de SB-G90 aanzienlijk heeft kunnen verbeteren. Het nieuwe SB-G90M2 speakersysteem bevestigt de toonaangevende positie van Technics in het vervaardigen van producten die één specifiek doel hebben: het realiseren van een akoestische weergave die het origineel zo dicht mogelijk benadert -ongeacht het muziekgenre.
Hieronder staan de punten waarop de SB-G90M2 technisch is verbeterd ten opzichte van zijn voorganger, de SB-G90:
- Geavanceerde Phase Precision Driver: Het diafragma van de coaxiale driverunit is aangepast. De constructie is opnieuw berekend met behulp van FEM (Finite Elements Method) simulatie voor verminderde resonantie en meer natuurlijke middentonen met minder vervorming. Daarnaast is een Linear Phase Plug toegevoegd die fasestoringen efficiënt elimineert, waardoor de geluidsdrukkenmerken van de tweeter natuurlijker zijn geworden.
- Architectuur met uitgebalanceerde drivermontage (BDMA): Het inwendige speakerbevestigingsschot waarop de woofers zijn bevestigd,op hetzwaartepunt rond de magneet,is nu verlengd tot één plaat die bevestigd is aan de bodemplaat, zodat trillingen kunnen 'ontsnappen' naar de vloer.
- Energiekere kastconstructie: De hele binnenste verstevigingsconstructie van het onderste deel van de kast heeft een nieuw ontwerp. De zogenaamde Standing Wave Termination Structure -een meervoudig gevouwen golfgeleider met een specifieke hoeveelheid akoestisch absorberend materiaal -elimineert staande golven efficiënt en beperkt tegelijkertijd het gebruik van akoestisch dempingsmateriaal tot een minimum.
- In reactie op verzoeken van onze klanten kunnen er op de nieuwe SB-G90M2 twee paar speakerkabels worden aangesloten (bi-wiring).
Features
Advanced Phase Precision Driver
To reproduce music with enhanced spatial sound expressivity requires that the wavefronts of sounds coming from the speaker unit are all aligned when they reach the listener regardless of the listening position. The concept of point sound source is one of the ideal approaches to achieve it.
To realise the point sound source reproduction, the coaxial configuration was adopted and then it was combined with the originally shaped Linear Phase Plug for aligning phases and the Smooth Flow Diaphragm formed with a shallow-shape diaphragm and smooth edge shape for minimum sound reflection.
The SB-G90M2’s 2-way coaxial speaker unit was newly developed for the reproduction of the mid- to high-frequency range in order to realise the clear sound image localisation and high sound quality to deliver smooth, emotion-rich music, while inheriting the concepts of point sound source and linear phase that Technics pursues relentlessly.
To realise the point sound source reproduction, the coaxial configuration was adopted and then it was combined with the originally shaped Linear Phase Plug for aligning phases and the Smooth Flow Diaphragm formed with a shallow-shape diaphragm and smooth edge shape for minimum sound reflection.
The SB-G90M2’s 2-way coaxial speaker unit was newly developed for the reproduction of the mid- to high-frequency range in order to realise the clear sound image localisation and high sound quality to deliver smooth, emotion-rich music, while inheriting the concepts of point sound source and linear phase that Technics pursues relentlessly.
Linear Phase Plug
The originally shaped acoustic plug is positioned on the front side of the tweeter diaphragm and provides a high-resolution sound reproduction capability and a wide sound stage.
The tip of the Linear Phase Plug is made from a high-modulus, high-density brass material. It prevents the plug from vibrating unnecessarily due to the effect of the vibration of the mid-range unit, thus delivering clear and low-distortion sound.
The tip of the Linear Phase Plug is made from a high-modulus, high-density brass material. It prevents the plug from vibrating unnecessarily due to the effect of the vibration of the mid-range unit, thus delivering clear and low-distortion sound.
Smooth Flow Diaphragm
When sound wave propagates along an irregular surface, its wavefront becomes disturbed due to the surface irregularities and results in the degradation of frequency characteristics.This affects particularly the characteristics of high frequencies with short wavelengths.
The diaphragm of the mid-range unit, which is part of the coaxial speaker unit, has a shallow shape with a smooth edge to reduce sound reflections so that the disturbance to the sounds radiated from the diaphragm is minimised, resulting in excellent frequency response, phase characteristic and wide directivity.
This configuration achieves a wide sound stage and smooth and rich mid- to high-frequency range.
The diaphragm of the mid-range unit, which is part of the coaxial speaker unit, has a shallow shape with a smooth edge to reduce sound reflections so that the disturbance to the sounds radiated from the diaphragm is minimised, resulting in excellent frequency response, phase characteristic and wide directivity.
This configuration achieves a wide sound stage and smooth and rich mid- to high-frequency range.
Stationary Construction
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.
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.
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 Highly Analysed and Optimised Components
Low-distortion and Long-stroke 16cm Woofer Bi-Wiring Speaker Terminal
Specificaties
Puntbron Luidsprekersysteem
Phase Precision Driver (coaxiale 2-weg luidsprekerunit)
Gebalanceerde aandrijvingsmontage (DBMA)
16 cm Long-stroke Woofer met lage vervorming
Netwerkcircuit van hoge kwaliteit
Zeer rigide behuizing
Formaat en gewicht
- Hoogte 1114mm - Breedte 302mm - Diepte 375mm - Gewicht 32kg
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Emotive Acoustic Technology
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Point Sound Source luidsprekersysteem
Groot bereik en lage geluidsvervorming
Phase Precision Driver (coaxiale 2-weg luidsprekerunit)
16 cm Long-stroke Woofer met lage vervorming
Netwerkcircuit van hoge kwaliteit
Gebalanceerde aandrijvingsmontage (DBMA)
Zeer rigide behuizing
Technics Definitive Design
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Hoogglans zwarte afwerking
Met magneten bevestigde geweven front
Type
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3-weg 4-luidspreker Bass Reflex (inclusief coaxiale 2-weg conus-units voor middensegment en tweeter)
Luidsprekers
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Woofer 16 cm-type conus x 2
Middensegment/tweeter coaxiaal, 16 cm.
Conus-type x 1 en 2,5 cm koepeltype x 1
Crossover-frequenties
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480 Hz, 3,2 kHz
Frequency Range
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27 Hz- 100 kHz (-16 dB), 32 Hz- 85 kHz (-10 dB)
Geluidsdrukniveau
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88 dB /2,83 V (m)
Impedance
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4 Ω
Input Power (IEC)
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100 W (nominaal), 200 W (max)
Aanbevolen versterker vermogen
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40 - 200 W (Luidspreker getest door IEC60268-5 Short Term Max Test)
Afmetingen B x H x D
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302 x 1114 x 375 mm (Met inbegrip van stofgrille, terminals en spikes)
Gewicht (per eenheid)
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Circa 32 kg
Accessoires
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Spike x 4, Spikeschoen x 4, Afstandsring x 4, Voetplaat x 4, Schroef voor voetplaat x 12, Rubber voet x 4, Gebruiksaanwijzing x 1, Luidsprekernet x 1, Reinigingsdoekje x 1
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