Subito   Shelf speaker as in Hobby Hifi 2/2018

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 85 dB
  • size (HxWxD): 360 x 170 x 250 mm
  • frequency range (-8dB): 45 - 28000 Hz
  • crossover frequency(s): Hz
  • speaker type: bass reflex

Subito is a compact loudspeaker with a full range driver.

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

The kit is delivered with a full range driver

The loudspeaker has been developed by Bernd Timmermanns.

The crossover consists of:
-a high-shelf filter and two absorption circuits

The frequency response of this speaker is nearly linear.

The decay spectrum is perfect.

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

Our kit consists of

  • Visaton B 100 - 6 Ohm
  • Bass reflex tube HP50, 50x145 mm, black
  • 0,5x PE sealing tape, 5x2 mm, 7.5 m
  • 0,5x Damping Sonofil 100 x 35 cm for 20 litres
  • 0,5x Audaphon Damping 10, 970 x 470 mm, adhesive
  • Binding Post PK31, gold plated (one pair, red and black)
  • 1m Speaker cable 2x1.5 mm2, transparent
  • 0,5x Pan screws 4x20 black, cross recess, 8 pieces
  • Plan for DIY kit

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

  • Audaphon MKT CAP 0.33 uF / 160 Vdc
  • Audaphon MKT CAP 0.68 uF / 160 Vdc
  • Mundorf air core coil L50, 0.47 mH/0.93 0hm
  • Mundorf air core coil L50, 0.82 mH/1.29 0hm
  • 1.0 mm air core coil, 1.5 mH/0.63 Ohm
  • Metal-oxide resistor, 10W 8.2 Ohm (grey-red-gold)
  • 2x Metal-oxide resistor, 3W 2.7 Ohm (red-purple-gold)

Kit without cabinet, price per speaker   EUR 131,00 excl. VAT: € 110.08 / $ 124.39

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 142,00 excl. VAT: € 119.33 / $ 134.84

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 3,35 excl. VAT: € 2.82 / $ 3.18

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 / $ 4.84
We recommend one board per kit (two boards for a speaker pair)


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