Base V   Subwoofer as in Hobby Hifi 3/2021

Technical data
  • impedance: 2x4 Ohm
  • sensivity (2,83V/1m): 86 dB
  • size (HxWxD): 570 x 350 x 450 mm
  • frequency range (-8dB): 25 - Hz
  • crossover frequency(s): Hz
  • speaker type: bass reflex

Base V is a versatile subwoofer which complements the rest of the loudspeakers with a powerful and deep bass.

Base V is a bass-reflex cabinet loudspeaker with drivers of Visaton .

The kit is delivered with a GF200 woofer

The loudspeaker has been developed by Bernd Timmermanns.

Matching speakers to this subwoofer.

The crossover consists of:
- two 2nd order low-pass filter (12 dB per octave slope) for the woofer for the left and the right channel. The woofer has two voice coils.

The frequency response of this speaker is nearly linear.

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 1% above 60 Hz.

Our kit with 120 Hz crossover consists of

  • Visaton woofer GF 200, 2 x 4 Ohm
  • 0,5x Damping 30 1100 x 470 mm, adhesive
  • PE sealing tape MDM-5, 5x2 mm, 5 pieces 1.5 m
  • Binding Post PK31, gold plated (one pair, red and black)
  • 1m Speaker cable 2x1.5 mm2, transparent
  • Allen wood screws, black, 5x30 mm, 8 pieces
  • Plan for DIY kit

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

  • Electrolytic capacitor, etched 390 μF / 63V
  • JB, electrolytic capacitor, bipolar, 330 μF/50 Vdc
  • Mundorf ferrite core coil F50 12mH/4.31Ohm
  • Mundorf H core coil H100, 6.8 mH/0.46 0hm
  • Metal-oxide resistor, 10W 0.39 Ohm 5% (orange-white-silver)

Kit without cabinet, price per speaker   EUR 182,00 excl. VAT: € 152.94 / $ 180.47

Our kit with 150 Hz crossover consists of

  • Visaton woofer GF 200, 2 x 4 Ohm
  • 0,5x Damping 30 1100 x 470 mm, adhesive
  • PE sealing tape MDM-5, 5x2 mm, 5 pieces 1.5 m
  • Binding Post PK31, gold plated (one pair, red and black)
  • 1m Speaker cable 2x1.5 mm2, transparent
  • Allen wood screws, black, 5x30 mm, 8 pieces
  • Plan for DIY kit

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

  • 2x JB, electrolytic capacitor, bipolar, 330 μF/50 Vdc
  • Mundorf ferrite core coil F50 12mH/4.31Ohm
  • Mundorf H core coil H100, 5.6 mH/0.39 0hm
  • Metal-oxide resistor, 10W 0.39 Ohm 5% (orange-white-silver)

Kit without cabinet, price per speaker   EUR 182,00 excl. VAT: € 152.94 / $ 180.47

Our kit with 190 Hz crossover consists of

  • Visaton woofer GF 200, 2 x 4 Ohm
  • 0,5x Damping 30 1100 x 470 mm, adhesive
  • PE sealing tape MDM-5, 5x2 mm, 5 pieces 1.5 m
  • Binding Post PK31, gold plated (one pair, red and black)
  • 1m Speaker cable 2x1.5 mm2, transparent
  • Allen wood screws, black, 5x30 mm, 8 pieces
  • Plan for DIY kit

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

  • Mundorf, electrolytic capacitor, etched, 270 μF/63 Vdc
  • JB, electrolytic capacitor, bipolar, 330 μF/50 Vdc
  • Mundorf ferrite core coil F50 12mH/4.31Ohm
  • Mundorf H core coil H71, 4.7 mH/0.46 0hm
  • Metal-oxide resistor, 10W 0.39 Ohm 5% (orange-white-silver)

Kit without cabinet, price per speaker   EUR 174,00 excl. VAT: € 146.22 / $ 172.54

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 5,60 excl. VAT: € 4.71 / $ 5.55
We recommend one board per kit (two boards for a speaker pair)


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