The B80 has been designed and constructed for natural musical reproduction at any volume level and even hurricane-like sound pressure levels of around 115 dB will not faze this speaker weighing almost 65 kg. Its inner chamber is made of up to 37 mm thick ultra-stiff MDF board with an additional complex internal bracing system and brought into its rounded shape with great skill. The rounded shape and the chamber system drastically reduce sound reflexions within the cabinet. Separate compartments for mid-range driver and tweeter give additional stiffness. Like all Burmester speakers, the B80 is not damped by wool stuffing but by felt-like mats and mats of special foam material of varying thickness on the inside of the speaker cabinet walls. The thickness of these mats has been calculated precisely in relation to their placement within the cabinet. This special procedure by Burmester gives the B80 an extremely fast and well-defined bass. Due to the low damping of the woofer the bass remains fully audible even at very low volume levels. The crossover of the B80 has been designed for high performance and transfer of the signal to the various drivers with minimal loss. With a weight of app. 5 kg it is one of the most sophisticated designs on the world market today. The crossover sits in its own completely sealed enclosure at the bottom of the speaker cabinet. The binding posts are located invisibly on the underside of the speaker. The crossover allows bi-amping as well as bi-wiring. The overriding goal behind this liberal use of top-class material was to create an extremely low-resistance crossover allowing the high internal damping of the amplifiers to pass to the drivers with minimal loss. Only then are the amps able to tightly control the various drivers. The circuit boards of the crossover have been covered with a 2 x 70mm-thick layer of copper. While the bass drivers are connected with 10 mm² high-purity copper litz, the mid-range drivers with 4 mm² and tweeters are coupled to the crossover using a new Burmester speaker cable of pure silver.