Wharfedale opus - Manual (Page 20)

opus
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THE 75mm 3” SOFT DOME MIDRANGE
A studio monitor quality large dome mid-range is used to cover the crucial midband frequencies. The key feature of this driver
is exceptionally low distortion over its entire working range, typically less than 1% when producing 100dB at 1 metre. It is
mounted in a custom matched fascia plate to provide partial horn loading and giving a broad angle of dispersion to its upper
crossover point. The fascia plate is constucted from die cast aluminium, designed to place the units as close as possible for
optimum integration and to create a point source effect. It has a large 75mm 3” voice coil again based on a rigid half hard
aluminium former. The dome is pressure equalised by an underside baffle and chamber.
THE 25mm 1” SOFT DOME TWEETER
The highest frequencies are also handled by a soft dome driver. Our extensive research has proven these are a better choice
than the metallic based domes that typically add their own character to the treble.
A feature of the tweeters, as with the mids, is wide dispersion and very low distortion, again typically less than 1% at 100dB
at 1 metre. The unit features a high flux neodymium magnet structure, producing a typical efficiency of 93dB 1W@1m. This
unit has a frequency response extending far beyond audible frequencies to around 45kHz.
THE CROSSOVER AND WIRING
Monster Cable XP is used throughout the internal wiring (USA only - other countries use alternative brands of high-quality
OFC cable). High quality printed circuit boards are used, and all connections are made to audiophile standards.
All inductors used are air-cored and use large gauge wire for very low insertion loss.
All capacitors used are either, low loss, low ERC polypropylene or high quality audio grade reversable electrolytics.