Ariosa is a 2 way compact speaker with AMT (air-motion-transformer). Published in K+T 3/2017.
The kit provides an air motion tranformer (AMT) and a woofer. The AMT is the Gradient AT1R and the woofer is a Seas CA15RLY.
Ariosa is developed by Thomas Schmidt.
The crossover consists of a 3rd order high-pass filter (18 dB per octave slope) for the tweeter. The woofer is connected to a 2nd order low-pass filter (12 dB per octave slope).
Between 100 Hz and 20000 Hz the frequency response of this loudspeaker is linear on axis. The decay spectrum is nearly perfect. At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are lower than 0.5% above 500 Hz and below 1% at 95 dB at 1 m .
The kit contains:
the standard variant crossover components, to be mounted on a small wooden board.
The high-end kit is delivered with baked varnish air core coils for minimizing microphonic effects. - The current flow through the coil creates a magnetic field which sets the reel of wire in motion. This motion induces a voltage in the coil which adds itself to the signal. The stiffer the reel of wire is, the less the signal will be altered. All capacitors are of type polypropylen (MKP). In series to the tweeter Clarity-Cap CSA 630 V are employed.
Data sheet
Ariosa is a 2 way compact speaker with AMT (air-motion-transformer). Published in K+T 3/2017.