Cobra-Horn 2   Floorstanding as in Hobby Hifi 5/2017

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 92 dB
  • size (HxWxD): 991 x 338 x 500 mm
  • frequency range (-8dB): 48 - 20000 Hz
  • crossover frequency(s): Hz
  • speaker type: de bocina

Cobra-Horn 2 is a floorstanding loudspeaker with a full range driver.

Cobra-Horn 2 is a back-loaded horn loudspeaker with Tang Band driver.

The loudspeaker has been developed by Bernd Timmermanns.

The crossover consists of a notch filter to reduce the level in the midrange

The frequency response is linear. The decay spectrum as shown in the waterfall diagram is free of any disturbing pronounced resonance. At volume of 90 dB at 1 m, the nonlinear distortions are lower than 1% above 100 Hz.

Our kit consists of

  • Tang Band W8-2145 full range
  • 0,5x PE sealing tape, 5x2 mm, 7.5 m
  • 2x Damping Sonofil 100 x 35 cm for 20 litres
  • Binding Post PK31, gold plated (one pair, red and black)
  • 2m Speaker cable 2x2.5 mm2, transparent
  • Pan screws 4x20 black, cross recess, 8 pieces
  • Plan for DIY kit

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

  • Mundorf MCAP Supreme 4.70 uF / 600 V
  • Mundorf baked varnish air core coil BL140, 1.0 mH/0.30 Ohm
  • Metal-oxide resistor, 10W 3.9 Ohm (orange-white-gold)

Kit without cabinet, price per speaker   EUR 197,00 excl. VAT: € 165.55 / $ 188.72

Kit with high-end crossover

The high-end kit is delivered with a copper foil coil 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. The capacitor is a Mundorf polypropylen Supreme Silver/oil capacitor.

Kit with high-end-crossover without cabinet, price per speaker   EUR 268,00 excl. VAT: € 225.21 / $ 256.74

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.. I-2765, price per unit:   EUR 3,70 excl. VAT: € 3.11 / $ 3.54
We recommend one board per kit (two boards for a speaker pair)


Home   Hobby HiFi Overview