Zaurak   Floorstanding as in K+T 4/2017

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 90 dB
  • size (HxWxD): 1350 x 280 x 420 mm
  • frequency range (-8dB): 28 - 24000 Hz
  • crossover frequency(s): 130, 1050 Hz
  • speaker type: bass reflex

Zaurak is a three way floorstanding speaker.

Zaurak is a bass-reflex cabinet loudspeaker with drivers of Wavecor .

The kit is delivered with the following drivers:
- a Wavecor TW030WA11 tweeter
- two Wavecor WF120CU08 midrange / bass drivers
- two Wavecor WF223BD02 woofers

The loudspeaker has been developed by Dennis Frank and Daniel Gattig.

The crossover consists of:
- a 3rd order high-pass filter (18 dB per octave slope) for the tweeter.
- a band pass consiting of a 2nd order high pass filter (12 dB per octave slope) and a 3rd order low-pass filter (18 dB per octave slope) for the mids-woofesr.
- a 2nd order low-pass filter (12 dB per octave slope) for the woofers.

The frequency response of this speaker is perfectly linear. The decay spectrum as shown in the waterfall diagram is exemplary, above 500 Hz free of any disturbing resonance. At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are lower than 0.2% above 400 Hz and doesn't exceed 0.5% at 95 dB at 1 m between 400 and 10000 Hz. That is quite splendid.

Our kit consists of

  • Wavecor silk dome tweeter TW030WA11, 4 Ohm
  • 2x WF120CU08, Wavecor Mid/Woofer, 8 Ohm, paper / glass fiber, BD, phase plug
  • 2x Wavecor Mid/Woofer WF223BD02 paper / glass fiber, 8 Ohm
  • Bass reflex tube HP100, 100x197 mm, black
  • 4x Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 2x Damping Sonofil 100 x 35 cm for 20 litres
  • Binding Post PK31, gold plated (one pair, red and black)
  • 5m Speaker cable 2x1.5 mm2 black/red
  • Pan screws 3.5x17 black, torx, 8 pieces
  • 2x Pan screws 4x20 black, torx, 8 pieces
  • Plan for DIY kit

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

  • ClarityCap PWA capacitor 82 μF / 160 Vdc
  • Audaphon MKP CAP Superior 3.3 μF / 400 Vdc
  • Audaphon MKP CAP Superior 15 μF / 400 Vdc
  • Audaphon MKP CAP Superior 22 μF / 400 Vdc
  • Audaphon MKT CAP 68 μF / 160 Vdc
  • Audaphon MKT CAP 100 μF / 160 Vdc
  • 2x JB, electrolytic capacitor, bipolar, 220 μF/100 Vdc
  • Mundorf air core coil L140, 1.0 mH/0.30 Ohm
  • 1.0 mm air core coil, 0.47 mH/0.32 Ohm
  • 1.4 mm air core coil, 0.68 mH/0.23 Ohm
  • Mundorf bs125 core coil 8.2 mH/0.41Ohm
  • Mundorf H core coil H71, 3.9 mH/0.5 0hm
  • Mundorf H core coil H71, 33 mH/1.93 0hm
  • 2x ceramic resistor 10 Ohm/20 Watt
  • 3x Metal-oxide resistor, 10W 2.2 Ohm (red-red-gold)

Kit without cabinet, price per speaker   EUR 1254,00 excl. VAT: € 1053.78 / $ 1127.55

Kit with high-end crossover

The high-end kit is delivered with baked varnish air core coils on important parts of the crossover 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 capacitors for the two mids-drivers and the tweeter are of type polypropylen (MKP): Clarity-Cap PWA and Clarity Cap CSA.

Kit with high-end-crossover without cabinet, price per speaker   EUR 1411,00 excl. VAT: € 1185.71 / $ 1268.71

universal PCB

If you prefer to mount the crossover components on a 240 x 165 mm universal PCB instead on wood:
Universal PCB RA240, order no.. str-RA240, price per unit:   EUR 8,60 excl. VAT: € 7.23 / $ 7.73
We recommend one board per kit (two boards for a speaker pair)

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