Aluminium enables loudspeaker cabinets to be small and powerful. If only it weren't for physics... For a long time, the use of solid aluminium as a cabinet material was considered almost impossible. With our rib technology, we have completely eliminated sound conduction and the associated "bell sound". The result is a loudspeaker with a dynamic and sound purity that is unparalleled in hi-fi. The implementation was supported by the Federal Ministry for Research and Development.

The Double Vision version adds the finest tonal nuances to the sound of the standard product by using the highest quality components inside the DARC.
You can find an overview of all models here

of the editors


Press reports

Technical details

  • Enclosure made of solid aluminium ribs with intermediate dampers
  • Accuton/Gauder acoustic speaker chassis 
  • WBT BiWiring Terminal 
  • Nine-way room adjustment system 
  • All-aluminium base with integrated spikes 
  • Optional (retrofittable) diamond tweeter 
  • Bass extension plug-in bridge system 
  • DARC 60/80/100 optional with large base 
  • ultra-sloping, balanced crossovers

Loudspeaker cones have to be very light (keyword: acceleration) to be able to follow the music signals and yet very stiff and hard to be able to compress the air in front of and behind them. That's why we only use aluminium, ceramic or even diamond diaphragms. 

These materials do not sound hard or aggressive at all! On the contrary: the more precisely a diaphragm can follow the electrical music signal, the less distortion it produces and the more natural it sounds! So just please forget all prejudices and just listen! 

"The truth is in the music!" a renowned critic once said. We see it the same way. Forget everything you've been told about loudspeakers, but only pay attention to the sound experience. Because that's what counts! 


One-way loudspeakers with a full-range chassis can unfortunately only be used to a very limited extent, as the physical conditions for emitting bass and treble at the same time are diametrically opposed. That is why there are multi-way loudspeakers that cleverly divide the 10 octaves audible by humans: Large, heavy bass cones with small magnets, light midrange cones with extra-strong magnets and small, extremely light but hard tweeter cones with strong FeNd magnets.

The important thing here, as with all ensembles, is their interaction. This is controlled by a crossover. A crossover is an electrical circuit consisting of passive components such as coils (inductors), capacitors (capacitances) and ohmic resistors. With their help, the corresponding frequencies are conducted to their suitable loudspeaker chassis. There is only one catch, this separation is unfortunately very imperfect, so that frequency ranges are often radiated by two loudspeaker chassis at the same time. And that is the big problem, because this grinds out many impulses in the music and worsens the dynamics, making music reproduction bland and boring.

The remedy is "steeper" filters that increase the separation strength (keyword: slope). However, such filters are complex and expensive and extremely difficult to calculate. But: There is no alternative!

That's why we only use steep-edged, phase-linear filters with corrected group delay times with slopes of 50 to 60 dB/octave, which is a multiple of conventional filters, in all our loudspeakers.

Our speakers therefore sound very lively, spatial and extremely natural, unlike many others. You can hear this after just a few seconds. Therefore, compare our loudspeakers with your well-known pieces of music and let yourself be convinced by this fine, lively music reproduction.

Double Vision

With the Double Vision version of our DARC loudspeakers, we offer you the possibility of acquiring some extraordinary equipment details at an extra charge, which were only available on the market after the end of development. These include components from Mundorf on the crossovers, improved connection sockets from WBT or diversified internal cabling and a few other little secrets... The gain in sound quality is really impressive and even amazed us. However, the Double Vision version cannot be retrofitted, but must be ordered directly at the time of purchase. 

We therefore recommend buying the DARC rather as a Double Vision and ordering only the ceramic tweeter at first, as you can retrofit the diamond at any time without disadvantage.

Bass Extension
Elaborately developed Bass Extension

By pulling the "Bass Extension" bridge, the impedance of the speaker cabinet is increased in the low bass range. As a result, the speaker demands considerably less power from the amplifier, so that even small transistor amplifiers or tube amplifiers with low nominal power can be operated without problems. 

About the theory of bass extension 
In the filter theory of electrical engineering, circuits that influence the frequency response are also called electrical filters. In a loudspeaker, the electrical filters are partial filters of an entire acoustic transmission system. In addition to the electrical filters, there are also mechanical and acoustic filters. In its entirety, this results in an acoustic filter that describes the characteristics of a loudspeaker in its entirety, i.e. what we call frequency response, phase response and time response (impulse response). Filters have different blocking effects and efficiencies depending on how elaborately they are constructed. The simplest loudspeaker filter is the closed box with a blocking effect of 12 dB/octave. This is called a 2nd order filter because each order causes a slope of the blocking effect of 6 dB/octave. Since a bass reflex speaker has two oscillating mass-spring systems (speaker cone and oscillating air column in the tube), the bass reflex system is a 4th order filter system with a blocking effect downwards of 24 dB/octave and an increased efficiency in the bass range. It is therefore very popular and effective. Because a bass reflex speaker has an enclosure opening, enclosure air resonances can be excited by the diaphragm, which are radiated outwards through the tube and cause severe sound colouration, especially in the midrange. In two-way systems this can be a serious problem. For a two-way system, it is therefore advisable to increase the filter order with electrical filters. For example, a 1st order electrical high-pass filter, if properly sized, can extend the bass range downwards by more than half an octave, which will certainly give a small bookshelf speaker a strong foundation. A 2nd order electrical filter even causes a bass extension of almost a whole octave, making a subwoofer superfluous. In addition, such electrical high-pass filters increase the impedance at the very bottom of the low bass range (1 Hz -20 Hz), thus sparing the chassis extreme excursions if the recording is overloaded with subsonic components or extreme low bass. A shelf speaker is not designed for this. Such electrical filters have astonishing effects in combination with bass speakers, which is why we don't want to do without them. Of course, one thing is clear: the law of conservation of energy in physics also applies here. The low bass extension is bought by a reduction of the impedance in the range 25 Hz - 35 Hz, whereby the speaker draws more current (energy) from the amplifier to fill up the bass range. For larger tube amplifiers, transistor amplifiers or switching amplifiers this is generally not a problem, unless you want to listen extremely loud. Smaller tube amplifiers, on the other hand, can run out of steam. You can then deactivate the high-pass filtering by pulling the bass extension jumper. This increases the impedance and the required energy is significantly lower. And so you can also operate our loudspeaker cabinets with a smaller tube amplifier.

RC rib technology - enclosure made of solid aluminium ribs

Due to its stiffness, hardness, sound velocity and mass density, aluminium is more suitable than wood or MDF for the construction of loudspeaker cabinets. On the other hand, the low internal damping leads to a very long cabinet resonance in the high frequency range, which is annoying and disturbing. The conventional construction method (side, front and rear panels) leads to exactly this problem, so it seemed impossible to use aluminium until now.  
By using the ribbed construction, as we already do successfully in the Berlina series, this disadvantage can be completely eliminated. Due to the long-fibre dampers between the aluminium ribs, sound propagation between the ribs and reverberation is completely prevented. The result is an acoustically perfect cabinet that adds no distortion to the music signal.


Your room is booming ? Determine the droning frequency with our Gauder Akustik CD and we will build a de-droning filter into your Gauder Akustik loudspeaker box, which you can activate by means of a jumper.

Due to its geometry, every living room has fixed eigenmodes, so-called room resonances. Due to their long reverberation, they produce a very unpleasant, annoying droning noise that permanently disturbs the enjoyment of music. 

This is what a typical waterfall diagram of a living room looks like. Note how long the 50 Hz room resonance resonates and how much energy it carries. 

We build a custom-made filter into your Gauder Akustik loudspeaker cabinet that suppresses these resonances and thus linearises the bass impression. This way, you can finally listen to low bass without an annoying drone. A completely new listening experience opens up! 

Our filter works directly in the speaker cabinet, i.e. analogue. Digital filtering by a DSP is much worse in terms of sound, because the entire music signal is digitised and subjected to the filter raking procedure. This always leads to digital errors such as jitter, rounding and calculation errors. Afterwards, the entire signal still has to pass through the digital-to-analogue converter, which leads to further time, phase and frequency response errors. Therefore, an analogue filter in the loudspeaker is generally preferable. 

In order to be able to see for yourself how this filter, which we have built in for you, works, we install an additional activation bridge at the back or bottom of the loudspeaker. By pulling the bridge plug, you deactivate the filter. In this way, you can now compare your Gauder acoustic speaker with and without the special filter and thus see how outstandingly the filter improves the reproduction. 


DARC 200


DARC 100

DARC 100 Testreferenz

Darc 60

DARC 200


Darc 40

Quality and service promise

Highend – 
Made in Germany

From development and production to the final inspection with listening test - every loudspeaker is manufactured in Renningen.


With our unique GAUDER Lifetime-Update your loudspeaker will always be technically and sonically up to date.


Upgrade possible at any time (BERLINA, DARC, CERAMIC). The surcharge is no higher than at the time of purchase.

10 years warranty

We know about the quality of our speakers. Therefore we grant for registered loudspeakers
10 years warranty.


Would you like more information about our speakers? Would you like to visit our factory or test a loudspeaker?

Please feel free to call us (phone +49 7159 920161) or send us this contact form. We will get back to you as soon as possible.


Vielen Dank für Ihre Nachricht. Wir kümmern uns schnellstmöglich um Ihr Anliegen.
Ihre Nachricht konnte nicht gesendet werden. Bitte beheben Sie den Fehler und versuchen Sie es erneut.
To the privacy policy