LECUA的全名是Luxman電子終極音量控制器(Luxman Electric Controlled Ultimate Attenuator),最早出現在1996年發表的C-10前級中,運作原理是以兩組數值經過精密計算的電阻陣列互相搭配,達到調整(衰減)音量大小的目的。這種設計可以看做是傳統級進式音量控制器的進化型態,傳統作法必須靠旋鈕切換電阻的接點,達到改變音量的目的,LECUA則是利用晶片感知旋鈕位置,進而控制兩組電阻的搭配。LECUA有三大優點,一是沒有接點氧化問題,使用再久也不會出現雜音。二是每一級音量只經過兩顆電阻,將失真降到最低。三是LECUA的線路板是垂直立體架構,將訊號路徑縮到最短,將雜訊干擾降到最低。目前Luxman C-900u旗艦前級使用的是LECUA 1000,這是了全平衡架構的頂級製作。最入門的DA-150 USB DAC同樣配備LECUA技術,雖然是將電阻陣列做在晶片裡面,但是特性仍比一般音量控制器好上許多。
LxDTM – 徹底排除轉盤振動干擾
LxDTM轉盤機構由厚鋼板與鋁合金板構成 重量級轉盤外殼,整體重達7公斤。
Luxman原創轉盤機構(Luxman Original Disc Transport Mechanism)的縮寫,由厚鋼板與鋁合金板構成重量級轉盤外殼,外殼厚達9mm,整體重達7公斤,鋼板與鋁合金兩種材料的組合,是經過無數次實驗之後,抑振效果最好的選擇,可以同時抑制拾取機構的馬達振動,以及外界振動干擾。旗艦D-08u SACD唱盤所使用的LxDTM轉盤,還附帶一個會自動開闔的「門」,承盤進出動作無比精密優雅,日本的機械工藝,實在無話可說。曾有國外訊源廠商想要購買這個轉盤機構,可惜產量有限,只能Luxman獨享,就算有錢也買不到。
早川齊接任社長之後,做了一個重大決定,成為Luxman成功進軍歐美市場的關鍵,那就是大膽任用年輕工程師Tim de Paravicini進入研發部門。如今音響迷都知道Tim是音響大師,但是在1972年,Tim只是個二十多歲的小伙子,在南非音響界發展,曾經替幾個搖滾樂團設計過音響系統,並且替一些音響店擔任諮詢工作,雖然擁有一間小工廠,在當地小有名號,但是絕對稱不上大師。那時他在南非工作的一間音響店,剛好是Luxman的當地總代理,Luxman慧眼視英雄,發掘了Tim的音響設計才華,於是延聘他到大阪工作。
It takes Spendor six days to build a loudspeaker and a whole year to design one. Here’s what the process looks like for a Spendor D7
Designed and manufactured in Great Britain from original designs, Spendor loudspeakers – which include the accessible A-Line and the enthusiast D-Line and Classic – deliver a transparent and musical sound that performs well above their price point. Indeed, so good are Spendor loudspeakers, the A4 floor-standers won a coveted five-star What Hi-Fi? Award earlier this year.
Creating a loudspeaker as good as a Spendor, particularly one that’s as aesthetically pleasing as it is sonically proficient, is no easy task. In the video below, each stage of the six-day build process has been beautifully documented, beginning with an initial concept that’s cleverly matched to the market need by the Spendor team.
The initial concept goes through research and development, a year-long process of experimentation to find the perfect sound for the product. Detailed drawings are made using modern CAD (computer-aided design) software, while the effects of different drivers, styles and materials are precisely calculated. At every stage of the process, the Spendor team takes comprehensive measurements and listens, listens and then listens to the loudspeaker again.
Every part of the loudspeaker has a profound effect on its sound. The cabinets, crafted with sophisticated multi-axis computer controlled machining, are assembled by skilled operators with decades of experience. The natural veneers that give the cabinets their smart, modern styling are matched from a variety of premium woods before going through a process of mirroring and laying to achieve the perfect look. The cabinet is then lacquered and polished with a meticulous attention to detail for a beautiful finish.
The heart of a loudspeaker is the drive unit. Spendor uses vacuum formed EP77 polymer cones mounted inside a die-cast magnesium alloy chassis. Aerospace-grade adhesives – as strong as steel – marry the high density ferrite magnet ring and Kevlar composite bass cones. It’s this precision alignment of cone, coil and suspension assembly – as well as premium crossovers made with precision inductor winding and gold plated four-layer circuit boards – that give Spendor speakers their sought-after sound.
The cabinets and drivers are brought together to create a fully working loudspeaker that – like at every stage of the process – is tested and calibrated against Spendor’s laboratory reference to ensure it meets the company’s meticulously high standards. Finally, the loudspeaker is packed and sent out to one very happy customer. A year of extensive design work is turned into a hand-built loudspeaker in six extremely labour-intensive days.
Such craftsmanship is why Spendor can create the innovative, elegantly engineered and beautiful sounding loudspeakers that have astonished listeners for over 40 years.