WaveOnWall 84   wall-mounted speaker as in Hobby Hifi 1/2019

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 85,5 dB
  • size (HxWxD): 33 x 440 x 66 mm
  • frequency range (-8dB): 170 - 28000 Hz
  • crossover frequency(s): Hz
  • speaker type: closed box

WaveOnWall 84 is a wall-mounted loudspeaker with a full range driver.

WaveOnWall is designed in such a way that it has enormous level stability, but should be supported by a subwoofer up to approx. 180 Hz. Such subwoofers are:

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

The kit is delivered with Wavecor FR084WA01 full range drivers

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.
- two a blocking circuits in series with the full range drivers.

The frequency response of this speaker is perfectly linear.

The decay spectrum is perfect.

At medium volume, i.e. 90 dB at 1 m, the nonlinear distortions are below 0,5% above 200 Hz.

Our kit consists of

  • 3x Wavecor Fullrange FR084WA01, 4 Ohm
  • 0,25x Damping Sonofil 100 x 35 cm for 20 litres
  • Female banana jacks, red and black
  • 2m Speaker cable 2x1.5 mm2, transparent
  • 1,5x Pan screws 3.5x17 black, 8 pieces
  • Plan for DIY kit

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

  • electrolytic capacitor, etched, 15 μF/100 Vdc
  • 2x electrolytic capacitor, etched, 47 μF/100 Vdc
  • electrolytic capacitor, etched, 68 μF/100 Vdc
  • Mundorf baked varnish air core coil BL71, 0.18 mH/0.34 Ohm
  • 1.0 mm air core coil, 0.68 mH/0.39 Ohm
  • Mundorf Aronit core coil a71 6.8mH/1.65Ohm
  • Mundorf ferrite core coil F50 15mH/4,79 Ohm
  • Metal-oxide resistor, 5W 4.7 Ohm (yellow-violet-gold)
  • Metal-oxide resistor, 5W 6.8 Ohm (blue-grey-gold)
  • Metal-oxide resistor, 5W 8.2 Ohm (grey-red-gold)

Kit without cabinet, price per speaker   EUR 299,00 excl. VAT: € 251.26 / $ 268.85

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 electrolytic plain.

Kit with high-end-crossover without cabinet, price per speaker   EUR 321,00 excl. VAT: € 269.75 / $ 288.63

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 4,50 excl. VAT: € 3.78 / $ 4.05

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 / $ 3.78
We recommend one board per kit (two boards for a speaker pair)


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