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BA71 Loudspeaker

With the Ambience BA71 Dieter Burmester created a loudspeaker that combines striking sound with highest musical fidelity and almost unlimited power reserves. Its fundamental bass power despite its lean and elegant appearance is due to the separation of the bass diaphragm into four identical, compact bass drivers, which are energetically supported in the lowest registers by a bass reflex port. Two low-to-mid range drivers in a sealed compartment for each speaker provide well-balanced, tonally correct sound up to the treble register for which a new Air Motion Transformer (AMT) tweeter has been custom developed. However, what really sets this speaker apart is its adaptability to different rooms and listening tastes. An additional, rear-firing ambience tweeter can be infinitely adjusted to adapt the sound to individual tastes or listening room acoustics. It opens up the width and depth of the soundstage in a way that heretofore seemed possible only with omnidirectional or dipole speakers. However, with Burmester’s Ambience loudspeakers this phenomenon is not only achievable but also adjustable.


Since 1977 Burmester Audiosysteme has been manufacturing high-end audio components of unsurpassed quality. From the very beginning, the objective has been to create a perfect blend of highest-quality sound, technological innovation, and timeless design. Highly trained technicians assemble all Burmester components by hand in its Berlin factory. Because “Made in Germany” is a label that is taken very seriously by Burmester. Burmester’s research and development department constantly strive to not only keep up with the latest advances but to set its own trends and standards. From the first design sketch via a number of prototypes to the final product shipped from the Berlin factory: each component that bears the Burmester name has been developed in its entirety in-house. As an audio pioneer, Burmester has created a number of legendary components that have become icons of the high-end audio universe.

Burmester considers himself as a guardian and mediator of our musical heritage. The innovative technologies and the highest-quality parts used in the audio components ultimately serve only one purpose, namely, to give full access to the music. By listening to recordings of Elvis Presley, Herbert von Karajan or the Beatles you can bring the full spirit of music into your living room that no concert stage in the world can offer you anymore.

? Four identical for enormous power handling and dynamics, coupled with high sensitivity
? Reflex design for a powerful, clean low-end
? Two identical low-mid drivers for a totally sovereign and pleasantly warm reproduction of the fundamental range
? Separate, closed chamber for the low-mid chassis to save them from the low-frequent pressure waves and thus refine the midrange
? Air Motion Transformer (AMT) with feather-light diaphragm, super strong neodymium drive, outstanding wealth of details, sonic neutrality and continuous high-level capability
? Identical Ambience tweeter on the cabinet’s rear side with level control for the individual adjustment of the spatial character of the sound image
? High-quality terminal panel suitable for massive cable lugs and e.g. low-mass hollow banana plugs
? Optional bi-wiring or bi-amping operation mode to use e.g. different power amps for the low and high/mid frequency ranges
? The cabinets with acoustically decoupled aluminium fronts and braced MDF walls enhance the low-resonance reproduction of the fundamental range
? Veneer and lacquer finishes in five different versions may be combined with alu fronts in three different colours

Design Principle 3-way bass reflex
Power rating 300 W
Sensitivity at 2.83V/1m 89 dB
Impedance 4 Ω
Frequency response +/–3 dB 35–40.000 Hz
Tweeter 2 x Air Motion Transformer
Midrange driver 2 x 170 mm fiberglass paper cone
Woofer 4 x 170 mm fiberglass paper cone
Crossover frequencies 180/2.600 Hz
Weight per piece 60 kg (132,3 lbs)
(W x H x D)
303 x 1.232 x 500 mm
(11.9" x 48.5" x 19.7")

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