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Backes & Muller BM 100 $550,000 Speakers

Backes & Muller BM 100 $550,000 Speakers
image credit: Backes & Muller

Backes & Muller BM 100 $550,000 Speakers 

BMLine 100: Vertical horn line source, in a class of its own in the high-end performance league.

Backes und Muller BM 100 belongs to the Horn series.

This is the top acoustics in the Backes&Mueller line.

Authentic reproduction in a large room is very different from reproduction in a small room and requires a completely different approach.

Listening to the acoustics at a great distance from it requires a completely different setting, and as a result of a different process and principle of sound reproduction.

The BM 100 combines state-of-the-art digital technology with time-tested classic horn technology.

The introduction of digital signal processing technologies, allowed us to fully realize the exact construction of the scene and the localization of instruments and performers on it.

All our ideas, concepts, and designs serve only one goal – the most neutral and as close as possible to the natural reproduction of music.

Backes & Muller BM 100 $550,000 Speakers
image credit: Backes & Muller

The housings of the BM 100 are made in the form of vertical horns.

Our proprietary digital crossover with  FIRTEC™ technology separates low and mid-frequency signals, corrects that signal, and feeds it so that it adds up to a single musical picture near the listening position.

S- and X-Material composite materials.

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This musical signal is completely in-phase and therefore absolutely pure and accurate.

In addition, the BM 100 can be customized and optimized for a particular room using the built-in digital equalizers.

Backes & Muller BM 100 $550,000 Speakers
image credit: Backes & Muller

The vertically positioned horn in combination with the cylindrical acoustic radiation wave leads to a noticeable increase in the “direct” sound signal.

Simply put, a person hears an absolutely clear, transparent, clear, and minimally colored sound by the room.

The latest digital crossover is equipped with an FPGA-Design system.

This digital signal processing system was developed on the basis of a mathematical model of the applied speakers, it controls their work by recalculating the data received from them several tens of thousands of times per second.

Backes & Muller BM 100 $550,000 Speakers
image credit: Backes & Muller

The FPGA system makes appropriate adjustments to the signal of amplifiers connected to the speakers.

In acoustics, DMC technology is used, which fully controls the operation of the bass speakers.

The patented “DMC” system constantly monitors and controls the position of the woofer diaphragms.

Thus, the membrane accurately follows the input signal.

The movements of the diaphragms of the bass drivers and their current position are monitored by high-precision sensors.

Backes & Muller BM 100 $550,000 Speakers
image credit: Backes & Muller

Information from the sensors is sent to the analog controller, it compares the current position of the speaker with the characteristics of the audio signal, which at this point in time are references for the controller.

As soon as there is a difference in the reference and final signals, corrective changes are sent to the output stage, which eliminates the differences.

This technology ensures that the membranes only move as necessary to reproduce the signal.

Thus, parasitic oscillations and other errors are excluded.

The installed digital processor FIRTEC ™ provides absolute, phase-linear reproduction, without time delays and any coloration of the sound.

You can change and adjust the processor presets using a special program installed on your computer with OC, Windows XP, Vista, 7 systems.

Backes & Muller BM 100 $550,000 Speakers
image credit: Backes & Muller

The acoustics comes with an SD card on which all the software and acoustics digital equalizers preset and are recorded.

The BM 100s have a built-in 24-bit A/D and D/A converter (Delta-Sigma) with an oversampling rate of 192 kHz.

All these applied technologies and materials gave us an amazing result.

The most important thing is the absolutely natural transfer of music, as it was conceived by the author and recorded by the sound engineer.

The sound is neutral, clear, and musical, with a linear amplitude of the phase frequency response, down to the lowest frequencies.

This achieves dynamics comparable to a live performance and a special “freedom” of sound.

These unique musical qualities distinguish Backes&Mueller acoustics from any other acoustic.

You can tailor the crossover to suit your acoustic conditions and the type of music being played.

All these technologies make the BM 100 very flexible to use in both high-quality stereo and home theater applications.

Acoustics has six built-in fully balanced amplifiers, with a power of 500 watts for low frequencies, 900 watts for midrange, and 300 watts for tweeters.

Amplifiers are made on completely discrete elements.

Official site: Backes & Muller

Technical specifications

A software-based digital signal processor (DSP) is implemented in the newly developed electronics in FPGA design (“Field Programmable Gate Array”), which maps the mathematical model of the loudspeaker with all relevant physical properties and the correct one thousands of times every second equalization calculated. The loudspeaker consisting of chassis, housing and electronics is considered as a complete system and completely corrected. This means exact pre-regulation for the entire mid-high range without any control loop error or dead time. The AD and DA converters used are “state of the art” and cover a range in terms of performance and dynamics that is absolutely suitable for “live”.

In the bass, B&M’s own DMC™ control, which has been further developed and patented, achieves the same exact music reproduction in an analogue way as the signal processor in the upper frequency band. The combination of digital signal processing in conjunction with B&M’s own analog DMC™ control results in an exact linearization in magnitude and phase. The BMLine thus has a constant phase curve of 0°, or to put it musically: all frequencies reach the listener’s ear at the same time. The result is an unbelievably impulse-accurate reproduction in connection with an exact spatial representation of the stage and the panorama.

Front 6 x:
  12″ International high-performance bass driver units (DMC™-controlled)

  International Pat. PCT/EP2016/053272
Front 10 x:
  6.5″-FIRTEC™-controlled

  Mid-range drivers

Front 1 x:
  1.8″ Fraunhofer line driver
  (patent DE102015102643A)

Amplifier power:
  Bass 6 x 500 W

  Mid 900W

  High 300W

Frequency range:
  22 – 24000 Hz (+/- 3 dB)

Input
  sensitivity 10 dBu

AD Converter:
  24-bit Sigma Delta DA Converter (192 KHz)

DA Converter:
  24-bit Sigma Delta DA Converter (192 KHz)

Analog IN, OUT:
  XLR balanced

  subwoofer out

Digital IN:
  Digital AES3 IN

DSP:
  FPGA with software-based digital signal processor

Room equalization:
  DSP-controlled phase-linear user EQ with 6 filters, distance shift aso
  Backes&Müller
  PPG remote control unitDMC-controlled

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