First patent application
Josef Manger returned from a 3 year stay in Australia to take over the family business at home in Germany. He decided to start importing PA systems from famous US brands like Marshall, Fender, Klipsch for the classic radio and TV shop.
While mainly selling these products to bands and musicians he got introduced to the sound of instruments and its reproduction through audio systems. He soon realized that the reproduction of music through state-of-the-art technology was not the same experience that you could have during a live concert.
Wondering why, he began his meticulous research by measuring the frequency response of various speakers. When compared it became obvious that they are technically all quite similar, even though the sound is quite different. Josef W. Manger started to drill down on his idea to investigate the time behaviour and step response. He quickly noticed huge differences between the tested speakers.
In his relentless pursuit for better solutions, Josef W. Manger started to look for alternative setups for electroacoustics and materials. The easy part was to figure out that conventional drivers work like mass-spring systems, swinging after excitation. This problem led him to his first solution and patent: a woofer with a free air resonance of 7 Hz.
Push-pull moving coil loudspeaker having electromagnetic centering means
An electrodynamic acoustic transducer such as a loudspeaker or a microphone in which the datum or center position of the diaphragm is determined by two voice coils. The coils are fixed to one another and to the diaphragm and cut magnetic fields. Datum currents are provided for the coils and the coilds are of non-uniform density of winding and/or the magnetic fields are nun-uniform. The coils and the datum currents are arranged to proved the balanced forces on the coils only when the diaphragm is in the datum position.
W01 - the first generation
In 1969, the idea of the resistance-inhibited transducer was born. After the sobering realization that the first idea, which was the basis for the first patent, came at the wrong end, namely at the slow movements, ie low frequencies.
According to the principle Josef W. Manger: "There is nothing bad, which would not have any good". He had developed the drive for his bending wave converter with the first patent.
2nd patent - Membrane
After being granted his first patent, Josf W. Manger soon realized that the main limit to natural audio reproduction cannot be found in the slow motion movements of the low end, but in the fast movements of the tweeter. His reasearch took him to a paper from the inventors of the piston driver: Rice and Kellogg. In their paper, the two described the idea of a mechanical resistor being the prime principle for sound reproduction. Since “no” has never been an option for the entrepreneur Josef W Manger, his vision was now supported by a clear aim which led him to his second patent:
An electro-acoustic transducer has a diaphragm with a moving coil. The diaphragm consists of a flat textile carrier impregnated with a highly attenuating filling material and is highly elastic in its plane but inelastic in bending.
The German special interest magazine "Funkschau" features the fully functional Manger Sound Transducer W02 along with detailled theoretical background information.
47th AES Convention, Copenhagen
First technical presentation of the Manger® sound transducer during the 47th AES (Audio Engineering Society) Convention in Copenhagen, Denmark
"AN IMPULSEXACT TRANSDUCER WITH ELECTRODYNAMIC DRIVING UNIT"
In this paper the principals of a new transducer system are given. This new idea is governed by the rules, that ther must be no time delaying energy storaging during the transformation of the electrical form of energy into the mechanical form of energy as fa as the audio range is concerned. How this is achieved is described in details and measured results are represented and compared with conventional loudspeakers.
First international presentation
Presentation at the IEE (The Institution of Electrical Engineers) in London by Josef W. Manger
W02 - the next Generation
The unique and remarkable time behaviour of the bending wave principle is demonstrated by the W02.
Continued development & international patents
Further developments on the diaphragm result in a 3-layer sandwich diaphragm - This leads to considerable improvements of the bending wave behaviour and already at this time the driver cover a frequency range up to 30kHz. The Manger Sound Transducer W03 reached a considerable sensitivity of appr. 84dB/1W/1m.
Further worldwide patents applications follow.
Manger Sound Transducer® and Manger Sound System® become trademarks in Germany
Proof from the expert
Theoretical proof of the bending wave principle by Prof.Dr. Manfred Heckl (†), Berlin (author of "Structure borne sound").
See our full feature on Prof.Dr. Manfred Heckl's mathematical proof here.
This picture shows the movement of the diaphragm and air referred to the theoretical calculations at one frequency.
Legendary S05 Discus recognized with a design award
This year marks the development of the iconic Manger Sound System S05 which has also been awarded a design price.
Several patent applications to follow worldwide.
If you are curious, take a look into the S05 brochure (German)
S05 further improved
S05 - the 'flying disc' with its extraordinary look creates a lot of attention
and from the beginning it was one of the quality criteria of the Manger sound system:
"You can listen at low levels without missing nothing."
Josef W. Manger is honored with Diesel Medaille
Diesel Medaille in silver for Josef W. Manger - Award for extraordinary developments and inventions by the German institute of inventions
The German magazine STEREO reported in detail about the new prototype of the coming Manger sound system. Josef W. Manger visited the magazine with the prototype and the complete measuring equipment for showing the time response of it.
AES talk in Montreux
"Free-field pressure stepfunction tests acoustic transformation chain" by Josef W. Manger - Talk at the 80th AES convention in Montreux
First full active monitor system
Presentation of the Manger Sound System MSS, a fully active floorstanding studio monitor at the 15th Tonmeistertagung (Conference of Sound Engineers) in Munich. The talk "Transient behaviour of microphones and loudspeakers" by Josef W. Manger, was widely discussed.
The Manger Sound System MSS is the ancestor of the Zeroboxes and was soon used at many studios and institutes in Germany, Austria and Switzerland as a reference monitor system.
- Hochschule für Musik und Theater, Munich
- Hochschule für Musik, Wuerzburg
- Hochschule der Künste, Berlin
- Staatliches Institut für Musikforschung, Berlin
- ZKM, Karlsruhe
- Musikakademie der Stadt, Basel
The Manger Sound Transducer enters serial production
Begin of the serial production of the Manger Sound Transducer in Mellrichstadt (Germany)
Here you can read more about the efforts and production steps until a Manger Sound Transducer is ready.
Introducing a new line: the Zerobox
Development of the Zeroboxes - Zerobox 103, Zerobox 107 and Zerobox 109
Zerobox means: "There is no cabinet footprint by a pressure change, which normally appears and is known as baffle step.
Side-mounted drivers support pneumatically the front driver and create an infinite baffle."
Introducing even stronger Neodymium magnets
The induction in the 0,95 mm small air gap reaches 1,3 Tesla through the new Neodymium magnet. This new rare earth magnet material finally pushes the sensititvity up to 91 dB (1 W/ 1m).
Another chief use of neodymium is as the free pure element. It is used as a component in the alloys used to make high-strength neodymium magnets—powerful permanent magnets. These magnets are widely used in such products as microphones, professional loudspeakers, in-ear headphones, and computer hard disks, where low magnet mass or volume, or strong magnetic fields are required. Larger neodymium magnets are used in high power versus weight electric motors (for example in hybrid cars) and generators (for example aircraft and wind turbine electric generators). (excerpt from Wikipedia)
Josef W. Manger and Ulrich Kraus (Tonmeister and Professor at Hochschule fuer Musik, Munich) preparing the test assembly for their speech at Tonmeistertagung 1992.
DAGA 1998 - Lecture by Josef W. Manger
"Verbesserte Möglichkeit für die Untersuchung aperiodischer Druckverläufe als Basis für Ortung und Quellenerkennung" by Josef W. Manger - Lecture at DAGA congress in Zurich (German Acoustic Congress)
"Improved possibility for the investigation of aperiodic pressure changes as a basis for location and source detection" by Josef W. Manger - Lecture at DAGA congress in Zurich (German Acoustic Congress)(
ASA 1999 - lecture by Daniela Manger
"A sound transducer with a flat, flexible diaphragm working with bending waves" by Daniela L. Manger at the Joint Meeting "Berlin 99": 137th regular meeting of the Acoustical Society of America; 2nd convention of the EAA: Forum Acusticum; integrating the 25th German Acoustics DAGA Conference
Release of the Manger CD ‘Music from a different star’
We decided two or three years earlier to put together our own music sampler. Not because we wanted to do one, because it is popular in the high-end sector, but because we were not satisfied with those which were there. We invested a lot of time in this CD and are pleased that this CD is still in use today as a reference by numerous manufacturers and end users, not just as a pure CD sampler.
We have received and continue to receive a lot of compliments, including from Gunnar Rasmussen, owner of Gryphon Audio.
He simply wrote: "It's the best in business."
Patent pending for the Manger Holoprofile® - a dedicated sound guide for the Manger sound transducer
If you want to go deeper, you can read the patent application: here
Manger hits the clubs
Never say Never! That was our answer when we were approached by the well-known acoustician Willsingh Wilson in Berlin to design a sound system with Manger sound transducers. The result can still be seen and heard even nowadays.
As we already were told from proaudio users' expereince the Manger sound transducers' lack of transient response does not create a threshold shift and no 'ringing' in the ears, although 18 sound transducers on the dance floor generate a sound pressure of 120 dB. becomes.
In the photo you can see the custom-made steel sandwich housing, each equipped with three Manger sound transducers and a 10-inch woofer.
The club itself is a room-in-room construction; the rectangular modules recognizable in the picture are absorbers.
Manger technology in demand for public locations
Manger planned and installed a complete sound reinforcement system for a market and event hall in Nuremberg-Fuerth.
The star of opening concert was Rebekka Bakken.
Installaiton of forther customized sound reinforcement systems
The Südsternkirche in Berlin is even bigger than the Green Hall in Fürth. Here, too, Manger planned the entire sound reinforcement project. The installation was carried out under our supervision by many community members themselves.
c1 - “The best studio monitor in the world”
After a longer absence from the Proaudio market we decided to return.
So over a time of 3 years we developed the reference studio monitor c1 - and it seems that we made it right since the 'Professional audio' magazine titled it as "The best studio monitor in the world"
- 1000 Volt Production, Istanbul
- Peter Gorges, Bremen - Music technologies
- Claudius Bruese, Cologne - Composer
- WERYTON, Munich - Music production
- Schallplattenscheidtechnik Brüggemann, Frankfurt - Vinyl mastering
- Moscow NTV, Moscow - Post production
- Sanbreeze, Berlin - DVD Authoring
- Hubert von Goisern, Salzburg - Composer
- et al.
Manger branches out into microphone technology
Patent pending of a new microphone technique - Abstract of the German patent application
"3D-Stereospaltmikrofon zum Umwandeln von Schallbewegungen der Umgebungsluft in zwei elektrische Spannungen, bestehend aus einer Mikrofonkapsel in der Form eines Hohlkörpers, die eine einzige Öffnung aufweist und die mit einer Membrane als Elektrode abgedeckt ist, die aus einer flexiblen und einer elektrisch leitfähigen Folie besteht und die elektrisch isoliert befestigt ist und die zu einer Metallplatte als Gegenelektrode beabstandet ist, die innerhalb der Mikrofonkapsel befestigt ist, wobei die Metallplatte durch einen Spalt in eine linke Metallplatte als linke Gegenelektrode und eine rechte Metallplatte als rechte Gegenelektrode aufgeteilt ist, die elektrisch voneinander isoliert sind und je einen eigenen elektrischen Anschluss aufweisen."
s1 - First active floorstanding speaker
First presentation of the full active floor standing speaker MSMs1 at Klangschloss in Switzerland
The MSMs1 wins several awards in Germany and abroad.
Manger goes Bauhaus Dessau
The auditorium gets four custom-made Manger speakers just beside the columns. The planning and installation was done by the team of Manger.
c1 wins Focus open gold design award
Active speaker model c1 wins the Focus Open Gold - Indepedent international design award
On the pic beside Daniela Manger, the designer Stefan Harlé
Manger is chosen by Francksche Stiftungen Halle
"We are extremely happy that we chose Manger as sound reinforcement system.
We now have a much higher speech intelligibility at lower volumes" -
Director Thomas Müller-Bahlke, Francksche Stiftung
image hifi award 2013
The s1 received the image hifi award 2013 in the category loudspeakers.
German Design Award
The c1 is beside many other awards in Germany and abroad also a nominee for the German Design Award 2014.
i1 - the first in-wall speaker
i1 - in-wall speaker
An innovative solution of an in-wall cabinet and
the Manger Sound Transducer. As it is predicted by its
bandwidth and the low depth for in-wall. In 2015 we
decided to start with a design of an in-wall speaker.
The in-wall cabinet is a dedicated sandwich
construction, which combines materials for
a high sound reduction.
A clever mounting mechanism let adjust the depth
of the Manger driver with our without cover.
The explosion graphiques below visualize all the
details of this innovative cabinet construction.
25th company anniversary for Daniela Manger
Daniela Manger got the honorary certificate for her 25 years company anniversary in Mellrichstadt. The company, which she overtook from her parents started was actually established by her grand parents. The speaker business was established by her father Josef W. Manger, the inventor of the Manger sound transducer in the late 60's.
Death of Josef W. Manger
The inventor Josef W. Manger dies at the age of 87 years after a short illness. The magazine 'fidelity' honors him with a wonderful obituary "Der Zeit voraus"
In 2017 a thorough upgrade has been worked out for all speaker models and is standard since June 2017. The upgrade is retrofittable.
p2 - ‘Auspicious Debut’
Successful world premiere of the new floorstanding reference speaker p2 during High End show in Munich.
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