Chess Satellit   Shelf speaker as in Hobby Hifi 5/2017

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 86 dB
  • size (HxWxD): 460 x 300 x 300 mm
  • frequency range (-8dB): 65 - 30000 Hz
  • crossover frequency(s): Hz
  • speaker type: closed box

Chess Satellit is a two way compact loudspeaker.

Chess Satellit is a closed-cabinet loudspeaker with drivers of Visaton .

The kit is delivered with the following drivers:
- a Visaton G25FFL tweeter with waveguide WG148R
- a Visaton W 250 S, 4 Ohm woofer


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 band pass consisting of a 2nd order high pass filter (12 dB per octave slope) and a 2nd order low-pass filter (12 dB per octave slope) for thewoofer.

The frequency response is linear. 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 1% above 100 Hz.

Our kit consists of

  • waveguide Visaton WG 148 R
  • Visaton G 25 FFL, 8 Ohm
  • Visaton W250 S, 4 Ohm
  • 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
  • 1,5x Visaton Countersunk screws 3.5x25, 8 pcs
  • Plan for DIY kit

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

  • Audaphon MKP CAP Superior 3.3 μF / 400 Vdc
  • electrolytic capacitor, etched, 68 μF/100 Vdc
  • electrolytic capacitor, etched, 220 μF/63 Vdc
  • electrolytic capacitor, unetched, 8.2 μF / 70 Vdc
  • electrolytic capacitor, unetched, 10 μF / 70 Vdc
  • Mundorf air core coil L50, 2.7 mH/2.81 0hm
  • Mundorf air core coil L140, 2.2 mH/0.46 Ohm
  • 0.7 mm air core coil, 0.47 mH/0.50 Ohm
  • 0.7 mm air core coil, 15 mH/4,45 Ohm
  • Metal-oxide resistor, 10W 2.2 Ohm (red-red-gold)
  • Metal-oxide resistor, 10W 5.6 Ohm (green-blue-gold)
  • Metal-oxide resistor, 10W 12 Ohm (brown-red-black)

Kit without cabinet, price per speaker   EUR 350,00 excl. VAT: € 294.12 / $ 320.59

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. The capacitors for the tweeter are of type polypropylen (MKP) Clarity-Cap ESA 250V.

Kit with high-end-crossover without cabinet, price per speaker   on request

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 29,70 excl. VAT: € 24.96 / $ 27.20

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.. str-RA160, price per unit:   EUR 5,90 excl. VAT: € 4.96 / $ 5.40
We recommend one board per kit (two boards for a speaker pair)


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