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October 28, 2022Usher Diamond DMD technology:
Uncovering the key to superlative diamond sound
Because of its extreme hardness and excellent thermal conductivity diamond has always been considered an excellent material for
loudspeaker diaphragms. Tweeters with a diaphragm made of synthetic diamond, from the CVD (chemical vapor deposition) method have been around for quite some time. At Usher , we saw the promise of diamond as an ideal diaphragm material, but we also realized it would take some original thinking and an innovative approach to the engineering in order to bring out the best of this unusual material for application in audio.
Today after years of research we are pleased to present our exciting result the new Usher Diamond DMD series loudspeakers.
A perfect mix: An Usher Diamond dome has a proprietary metal alloy base layer with an amorphous diamond carbon layer on both sides.
A Bookshelf Speaker That Defies Its Size
A Bookshelf Speaker That Defies Its Size The USHER DMD tweeter, with its amorphous diamond coating, has been recognized by audiophiles and reviewers worldwide as one of the highest performance tweeters of today, and until now has been featured only on USHER’s premium range speakers. Over the years, however, we’ve received numerous requests for putting the DMD tweeter in an ultra-compact speaker system for smaller listening environments. The engineering team at USHER have been hard at work in developing an ultra-compact woofer, crossover and cabinet worthy of the DMD tweeter, and the SD-500 is the result.
A Beautiful Form That Follows Function
The SD-500 features a slightly angled front baffle that’s time-aligned for the tweeter and woofer. It’s available in four finishes: Walnut, Pearl Red, Jet Black and Pearl White. All four are finished with high-gloss piano lacquer and have a removable grille that’s discreetly yet securely attached to the baffle by magnet insets. The SD-500 is a treat both for the ear and for the eye.
The SD-500 is the smallest model with the DMD tweeter, but is nonetheless the culmination of decades of engineering excellence at USHER. Its performance defies its ultra-compact size and one will be hard-pressed to find another speaker of this size, regardless of price, with the same level of technology and musical satisfaction.
https://www.audiophilia.com/reviews/2020/11/30/usher-sd-500-loudspeaker
Technical data
- System : Bookshelf 2-way Bass Reflex Type
- Tweeter : 1.25″ DMD Dome
- Bass : 5.5″Paperfiber Complex Cone
- Frequency Range : 45Hz~40KHz
- Impedence : 8 Ohm
- Sensitivity : 86 dB/w/m
- Crossover frequencies : 2.1kHz
- Weight : 8.5 kg
- Dimensions (w x d x h): 19 cm x 32 cm x 36 cm
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