BURMESTER BA31

PW23.03.2016

Floorstanding loudspeakers

The BA31 loudspeakers are part of Burmester's Ambience range that has been premiered just few months ago. Personally, I cannot clearly see who is the target group for this new range - the speakers look less luxurious than we are used to with Burmester but they still keep rather hostile consumer pricing.

 

Function and form

96%
Ease of use
69%
Sound
98%
Appearance

The BA31 is a two-and-half way speaker that features two Air Motion Transformer tweeters – one is front-firing, the other is rear-firing. The combination of the two should ensure the ideal listening ambiance through system of wall reflections. The AMT principle was developed by legendary Oskar Heil. The AMT moves air in an augmented, semi-perpendicular motion using a folded sheet structured around a series of struts positioned in a high-intensity magnetic field, not unlike accordeon movement. The AMTs have great efficiency so the speakers with them usually exhibit serious HF lift, but they are also very fast and low-distorting. How much of each the AMT in the BA31 should be heard can be adjusted by a knob. The midrange/bass drivers have 170mm impregnated paper cones. The cross-over is set differently for each driver, one at 3kHz, the other at 400Hz. The rear-firing bassreflex port is quite high above floor. Despite that there is much less of polished aluminum that I would expect from Burmester, there is still some - the front baffle, the rear AMT baffle and the base of the speaker is aluminum. The latter also features bi-wirable binding posts.

Bass management

Weight
90
Slam
77
Articulation
75

At their nominal sensitivity of 87dB the BA31s were driven by the partnering amplifier with ease (Burmester 032 amplifier provides 2x170 watts of power). y rohodně neměl – leč předpokládám, že burmestrovský sound výrazně ovlivnil moje závěry. A jakýže to sound?

The bass of the Burmester BA31s,is quite deep, subjectively much deeper than the specified 38Hz/-3dB. The bass is contoured and is very transparent, if I may say so. The cabinets rigidity helps the speakers not contain any energy so everything is clean and fast. I was more than satisfied with what I heard from bottom octaves through the Burmester BA31s.

Clarity & delicacy

Detail
91
Air
81
Transparency
81

I could not detect any audible seams between bass and midrange. The midrange was - unlike the muscular bass and sparkling highs - a bit reticent in the positive sense of this word. Some may call it strict neutrality, the sonic attribute that I prefer to showing off. Vocals were on the illuminating and cooler side of the neutrality and they exhibited tons of inner detail. I did not hear the faintest traces of coloration from the BA31s.

Tonal accuracy

Timbre
75
Dynamics
75
Temporal resolution
72

I recommend to any future owner to experiment with the front wall treatments. Because of the rear-firing Air Motion Transformer the BA31s offer unusually wide range of implementing the speakers into a room - the result will be depending on how sensitive the owner will be in finding the right balance. I know some listeners that use the AMT drivers at full throttle and like the high amount of detail. Personally I find them a bit fatiguing so the option of the regulation and bidirectional radiation is something that I see as a step in the good direction.

Spatial resolution

Holography
80
Soundstage width
71
Soundstage depth
78

In my room the proximity of a large French window plays an important role. I could vary the performance of the Burmester BA31s from hyperdetailed and pin-sharp presentation to aurally pleasing experience that was not much different from what I use to hear from omnipolar speakers. After a full week of experiments I found my sweetspot and could enjoy even harsh sounding music without actually sounding harsh. The sound is great from the BA31s, so their price will be the most prohibiting factor if you consider the buy as there are many other - and better - speakers out there for this amount.

Price as reviewed:480 000,- Kč

Recommended resellers

Perfect Sound Group, Praha, tel. +420 722 960 690

Associated components

  • Sources: Burmester 089
  • Amplifiers: Burmester 032
  • Interconnects and speaker cables: InAkustik Reference NF-2404, InAkustik Reference LS-2404

Gallery

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