Housing
The housing is enclosed by a lavishly milled aluminum frame, which lends the loudspeaker solid support at all frequencies. The dimensions are 1889 x 1000 x 420 millimeters and it weighs more than 420 kg.
Design principle
The BC350 Loudspeaker is able to reproduce music in two different tunings. A switchover of the discrete crossovers, which are set up in a precisely separated configuration, allows the listener to select between intricate detail in Pure Mode and high-level performance and involvement with a psycho-acoustically lifted stage in Live Mode. Thus the BC350 offers the opportunity to realize different focal points in the sound image according to particular listening situations. The elaborately constructed switchover is designed for high power rating and longevity. It enables minimum contact resistances to reach a high damping factor, which is scalable to a maximum with the Burmester 159 Power Amplifier. Two 32 cm woofers, precisely defined in terms of surface and mass and perfectly matched to the bass reflex design with one bass reflex tube per woofer provide powerful bass depth, two 22 cm mid-woofers with light glass fiber papyrus membranes offer superior sound clarity and two AMT (Air Motion Transformer) tweeters with folded foil membranes allow for a naturally nuanced sonic image at the higher frequencies. In this way, a large AMT sends its sound directly to the listeners, while a smaller one is directed upwards to provide, on request, spaciousness of the music playback by means of indirect sound.
Pure mode
For audiophile enjoyment of music, the loudspeaker is used in “Pure Mode”. This audio tuning focuses on the priorities of a pure high-end music experience: authenticity, tonal balance, highest resolution, precision and agility. In this mode, the tweeter at the front, one of the two midrange drivers and both woofers are active. The stage presentation allows the differentiated placement of individual instruments and voices, yet at the same time captivates by means of its homogeneity. Audio and voice playback benefit from vastly superior resolution and fine dynamic reproduction.
Live mode
In “Live Mode”, the speaker offers a truly immersing ‘live’ audio experience. The focus of the tuning here concentrates on dynamism, involvement and spaciousness. To increase the sense of space according to individual preferences, an adjustable tweeter is activated at the top of the housing. Additionally, in this arrangement both mid-range speakers are switched in parallel in accordance with the D’Appolito principle. In this way, the membrane surface is increased and, in the midrange at a constant volume, only half as much individual driver movement is necessary. The sound in this mode is dynamic and powerful yet at the same time impresses with its differentiated stage and the ability to perform at very high sound levels without distortion.
