BA 71

Breathtaking spaciousness. Meticulous reproduction of even the most subtle musical details.
Complemented by a mighty dynamics, warmth and substance in genuine Burmester quality.
The Ambience BA71 owes its lean elegance and elemental bass power to the partition
of its diaphragm surface area into four identical, compact, front-firing woofers that are
vigorously supported in the sub-low storey by a bass reflex port.
Two low-mid drivers per loudspeaker guarantee the unfailingly sovereign and tonally
well-balanced reproduction up to the treble register for which a new Air Motion Transformer
(AMT) was custom-developed. For many years the Burmester AMTs have been regarded as
a benchmark for ultimate precision, neutrality, power handling and dynamics in the high
frequency range.

The BA71 owes its spacious sound talents to a second back-firing AMT on the rear of the
cabinet, which optimises the omnidirectional behaviour and involves the listening room
more strongly into the sound experience.
The Ambience BA71 is a loudspeaker for real aficionados who value impressive musicality,
absolute precision and almost infinite power reserves. Perfect adaptation to room and
taste: the Ambience tweeter may be adjusted to your personal preferences, requirements
and the listening room acoustics or turned off completely. It helps to render the imaginary
stage wider and deeper, as can normally be achieved only with omnidirectional or dipole
speakers, yet in the BA71 it is at the same time also variable.
The front is made of solid aluminium and available in silver, medium bronze or black.
The elaborately braced solid wood (MDF) body is available in these finishes: macassar
high gloss, light walnut high gloss, dark walnut high gloss, high gloss white and high
glossblack. Of course, the front walls and cabinet finishes may be individually combined.
Other finishes are available upon request at a premium.

FEATURES
∙ 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)
Measurements
                                            (W x H x D)
                                            303 x 1.232 x 500 mm
                                            (11.9" x 48.5" x 19.7")