Mikro Desktop is a small loudspeaker that employs a Wavecor full range loudspeaker FR070WA04. Mikro Desktop has been developed by Bernd Timmermanns.
Mikro Desktop is a compact speaker with closed cabinet. Below 160 Hz it should be enhanced by a subwoofer.
The crossover consists of a LRC notch filter wired in series. Also in series a capacitor is employed. In parallel to the full range driver a RL circuit is arranged.
Between 50 Hz and 17 kHz, the frequency response of this loudspeaker is nearly flat on axis together with a subwoofer. The decay spectrum is nearly perfect below 17 kHz. At low volume, i.e. 80 dB at 1 m, the nonlinear distortions are below 0.1% above 600 Hz.
Below 160 Hz Mikro Desktop should be supported by a subwoofer.
the crossover components (right),
to be mounted on a small wooden board.
Kit without cabinet, price per speaker - not available
The high-end kit comes with two Audaphon MKP CAP superior capacitors. Two of the inductances are baked varnished 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.
Kit with high-end-crossover without cabinet, price per speaker EUR 123,00 excl. VAT: € 103.36 / $ 110.60
Kit with high-end-crossover without cabinet, price per speaker EUR 174,00 excl. VAT: € 146.22 / $ 156.45
If you prefer to mount the crossover components on a 140 x 102 mm universal PCB instead on wood:
Universal PCB RA140, order no.. str-RA140, price per unit: EUR 4,20 excl. VAT: € 3.53 / $ 3.78
We recommend one board per kit (two boards for a speaker pair)
Hobby HiFi Overview