CT 283   Floorstanding as in K+T 1/2016

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 84 dB
  • size (HxWxD): 240 x 170 x 172 mm
  • frequency range (-8dB): 60 - 25000 Hz
  • crossover frequency(s): Hz
  • speaker type: closed box

Compact loudspeaker CT 283 (cheap trick 283) is a small 2 way speaker. The kit is delivered with Visaton tweeter and Visaton woofer. CT283 has been developed by Frank Zeppelin.

The crossover consists of a 2nd order high-pass filter (12 dB per octave slope) for the tweeter and a 2nd order low-pass filter for the woofer. A parallel RC circuit is smoothing the impedance of the woofer.

The frequency response of this speaker is nearly linear. The decay spectrum is nearly perfect. At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are lower than 1% above 300 Hz and rarely exceeds 2% at 95 dB at 1 m .

Our kit consists of

  • Visaton tweeter G20 SC
  • Visaton W100 S, 4 Ohm
  • 0,5x PE sealing tape, 5x2 mm, 7.5 m
  • 0,25x Damping Sonofil 100 x 35 cm for 20 litres
  • 2x Bitumex board 32.5 x 24.5 cm, 5,5 mm
  • 0,5x Cutting of needle fleece 1100 g/m2 1000x400, 10mm
  • Binding Post PK31, gold plated (one pair, red and black)
  • 2m Speaker cable 2x1.5 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 3.9 uF / 400 Vdc
  • Audaphon MKT CAP 2.2 uF / 160 Vdc
  • 2x Audaphon MKT CAP 10 uF / 160 Vdc
  • Audaphon MKT CAP 15 uF / 160 Vdc
  • Mundorf, electrolytic capacitor, etched, 680 uF/63 Vdc
  • Mundorf air core coil L50, 0.33 mH/0.75 0hm
  • Mundorf ferrite core coil F50 2.2mH/1.31Ohm
  • Mundorf H core coil H100, 0.82 mH/0.12 0hm
  • Metal-oxide resistor, 10W 1.0 Ohm (brown-black-gold)
  • Metal-oxide resistor, 10W 4.7 Ohm (yellow-violet-gold)
  • Metal-oxide resistor, 10W 10 Ohm (brown-black-black)

Kit without cabinet, price per speaker   EUR 148,00 excl. VAT: € 124.37 / $ 144.27

Kit with high-end crossover

Kit with high-end-crossover without cabinet, price per speaker   EUR 178,00 excl. VAT: € 149.58 / $ 173.51

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 9,93 excl. VAT: € 8.34 / $ 9.68

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.. I-2765, price per unit:   EUR 3,70 excl. VAT: € 3.11 / $ 3.61
We recommend one board per kit (two boards for a speaker pair)


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