CT 271   Floorstanding as in K+T 2/2014

Technical data
  • impedance: 12 Ohm
  • sensivity (2,83V/1m): 82 dB
  • size (HxWxD): 944 x 152 x 215 mm
  • frequency range (-8dB): 50 - 29000 Hz
  • crossover frequency(s): - Hz
  • speaker type: closed box

Looking for a cheap Kit (cheap trick) Thomas Schmidt encountered Visaton chassis. Thomas Schmidt chose Visaton woofer W170S4 and the Visaton dome tweeter SC10N. These are used in a closed, easy-to-install housing.

A second-order crossover is used (slope 12 dB/octave).

Our kit consists of

  • Visaton FR 10, 8 Ohm
  • Bass reflex tube BR50, 50x145 mm, black
  • PE sealing tape, 5x2 mm
  • 0,5x Damping Sonofil 100 x 35 cm for 20 litres
  • 0,5x Foam N25, 100x50x4 cm, black
  • Terminal T105 Au, with brass, gold plated
  • 1,5m Speaker cable 2x1.5 mm2, transparent
  • Plan for DIY kit

the crossover components (right),
to be mounted on a small wooden board.
  • Audaphon MKT CAP 2.2 uF / 160 Vdc
  • Audaphon MKT CAP 6.8 uF / 160 Vdc
  • Mundorf, electrolytic capacitor, unetched, 47uF / 50 Vdc
  • 0.7 mm air core coil, 0.15 mH/0.28 Ohm
  • 1.0 mm air core coil, 0.56 mH/0.36 Ohm
  • 1.0 mm air core coil, 0.68 mH/0.39 Ohm
  • Metal-oxide resistor, 10W 12 Ohm (brown-red-black)
  • 2x Metal-oxide resistor, 10W 22 Ohm (red-red-black)

Kit without cabinet, price per speaker   EUR 55,00 excl. VAT: € 46.22 / $ 53.61

Kit with low-cost crossover

The low cost kit contains instead of metal oxide resistors only ceramic resistors and instead of a big terminal a small one:

Kit without cabinet, price per speaker   EUR 51,50 excl. VAT: € 43.28 / $ 50.20

Kit with high-end crossover

In the kit with high end crossover Audaphon capacitors are used. All coils are designed as baked varnish air core coils to suppress vibrations in the coil.

Kit without cabinet, price per speaker   EUR 76,30 excl. VAT: € 64.12 / $ 74.38

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 15,34 excl. VAT: € 12.89 / $ 14.95

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 / $ 4.97
We recommend one board per kit (two boards for a speaker pair)


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