Mikro-Horn 2018   Shelf speaker as in Hobby Hifi 5/2017

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 85 dB
  • size (HxWxD): 440 x 188 x 370 mm
  • frequency range (-8dB): 50 - 40000 Hz
  • crossover frequency(s): Hz
  • speaker type: de bocina

MIkro-Horn 2018 is a two way compact speaker.

MIkro-Horn 2018 is a horn loudspeaker with drivers of Wavecor.

The kit is delivered with the following drivers:
- a Wavecor TW013WA01 tweeter
- a Wavecor WF118WA05 midrange / bass driver

The loudspeaker has been developed by Bernd Timmermanns.

The crossover consists of:
- a 2nd order high-pass filter (12 dB per octave slope) for the tweeter.
- a 2nd order low-pass filter (12 dB per octave slope) for the woofer.

In series to the woofer a notch filter is used.

response is linear except un aberration at 150 Hz. The decay spectrum as shown in the waterfall diagram is free of disturbing resonances. At a volume of 90 dB at 1 m, the nonlinear distortions are lower than 3% above 200 Hz.

Our kit consists of

  • Wavecor silk dome tweeter TW013WA01, 4 Ohm
  • Wavecor Mid/Woofer WF118WA05 glass fiber, 4 Ohm
  • 0,5x Damping Sonofil 100 x 35 cm for 20 litres
  • 0,25x Audaphon Damping 10, 970 x 470 mm, adhesive
  • Binding Post PK31, gold plated (one pair, red and black)
  • 1,5m Speaker cable 2x2.5 mm2, transparent
  • 0,5x Pan screws 3x17 dark-copper, cross recess, 8 pieces
  • 0,5x Pan screws 4x20 black, cross recess, 8 pieces
  • Plan for DIY kit

the crossover components (right),
to be mounted on a small wooden board.

  • Audaphon MKP CAP Superior 0.68 μF / 400 Vdc
  • Audaphon MKP CAP Superior 3.9 μF / 400 Vdc
  • Audaphon MKP CAP Superior 4.7 μF / 400 Vdc
  • Audaphon MKP CAP Superior 10 μF / 400 Vdc
  • electrolytic capacitor, unetched, 47uF / 50 Vdc
  • 1.0 mm air core coil, 0.18 mH/0.19 Ohm
  • 1.0 mm air core coil, 0.27 mH/0.23 Ohm
  • 1.0 mm air core coil, 0.39 mH/0.29 Ohm
  • Metal-oxide resistor, 10W 2.2 Ohm (red-red-gold)
  • Metal-oxide resistor, 5W 1.0 Ohm (brown-black-gold)
  • Metal-oxide resistor, 5W 6.8 Ohm (blue-grey-gold)

Kit without cabinet, price per speaker   EUR 247,00 excl. VAT: € 207.56 / $ 226.24

Kit with high-end crossover

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. Four capacitors for the fullrange driver are of type polypropylen (MKP) Clarity-Cap PWA 160.

Kit with high-end-crossover without cabinet, price per speaker   EUR 282,00 excl. VAT: € 236.97 / $ 258.30

Impedance correction

If you want to use a valve amplifier with this speaker an impedance correction should be employed. In this case the component quality is less important; therefore, we offer only one kit (upon request higher quality components are available).


Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 15,70 excl. VAT: € 13.19 / $ 14.38

universal PCB

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 / $ 3.85
We recommend one board per kit (two boards for a speaker pair)


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