WaveCenter 84   Shelf speaker as in Hobby Hifi 4/2018

Technical data
  • impedance: 6 Ohm
  • sensivity (2,83V/1m): 84 dB
  • size (HxWxD): 125 x 560 x 350 mm
  • frequency range (-8dB): 88 - 30000 Hz
  • crossover frequency(s): 400 Hz
  • speaker type: closed box

WaveCenter 84 is a two way compact speaker.

WaveCenter 84 is a closed-cabinet loudspeaker with drivers of Wavecor .

The kit is delivered with the following drivers:
- a Wavecor FR084WA02 full range driver
- four Wavecor FR084WA02 woofers

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 full range driver.
- a first order low-pass filter (6 dB per octave slope) for the woofer. A RLC parallel circuit and a RLC series circuit are used to smooth the frequency response of the full range driver.

The frequency response of this speaker is perfectly linear below 10 kHz.

The decay spectrum as shown in the waterfall diagram is exemplary, free of any disturbing resonance.

At medium volume, i.e. 90 dB at 1 m, the nonlinear distortions are below 0,3% above 200 Hz.

Our kit consists of

  • 5x Wavecor Fullrange FR084WA02, 8 Ohm
  • 0,5x Damping Sonofil 100 x 35 cm for 20 litres
  • Binding Post PK31, gold plated (one pair, red and black)
  • 3m Speaker cable 2x1.5 mm2, transparent
  • 2,5x Pan screws 3.5x17 black, 8 pieces
  • Plan for DIY kit

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

  • Audaphon MKP CAP Superior 2.2 uF / 400 Vdc
  • Mundorf, electrolytic capacitor, unetched, 22uF / 70 Vdc
  • Mundorf, electrolytic capacitor, unetched, 33uF / 70 Vdc
  • 1.0 mm air core coil, 0.47 mH/0.32 Ohm
  • Mundorf Aronit core coil a100 2.2mH/0.49Ohm
  • Mundorf ferrite core coil F50 3.3mH/1.71Ohm
  • Mundorf ferrite core coil F71 1mH/0.46Ohm
  • ceramic resistor 6.8 Ohm/20 Watt
  • Metal-oxide resistor, 5W 2.2 Ohm (red-red-gold)
  • Metal-oxide resistor, 5W 10 Ohm (brown-black-black)

Kit without cabinet, price per speaker   EUR 312,00 excl. VAT: € 262.18 / $ 301.51

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 fullrange driver are of type polypropylen (MKP) Clarity-Cap PWA 160.

Kit with high-end-crossover without cabinet, price per speaker   EUR 334,00 excl. VAT: € 280.67 / $ 322.77

universal PCB

If you prefer to mount the crossover components on a 159 x 127 mm universal PCB instead on wood:
Universal PCB RA160, order no.. I-2766, price per unit:   EUR 5,10 excl. VAT: € 4.29 / $ 4.93
We recommend one board per kit (two boards for a speaker pair)


Home   Hobby HiFi Overview