CT 293 (Basserweiterung für CT292)   Subwoofer as in K+T 5/2017

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 86 dB
  • size (HxWxD): 650 x 216 x 272 mm
  • frequency range (-8dB): 36 - 200 Hz
  • crossover frequency(s): 200 Hz
  • speaker type: bass reflex

CT 293 is a bass extension for the CT 292.

CT 293 (Basserweiterung für CT292) is a bass-reflex cabinet loudspeaker with drivers of SB Acoustics .

The kit is delivered with a woofer.

The loudspeaker has been developed by Thomas Schmidt.

The crossover consists of:
- a 2nd order low-pass filter (12 dB per octave slope) for the woofer.
- a 2nd order high-pass filter (12 dB per octave slope) for the CT 292.

The frequency response of this speaker is nearly linear. The decay spectrum is perfect. At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 0.5% above 300 Hz and doesn't exceed 1.5% at 95 dB at 1 m between 300 and 15000 Hz.

Our kit consists of

  • SB Acoustics SB16PFC25-4
  • Bass reflex tube Streamline 45
  • Damping Sonofil 100 x 35 cm for 20 litres
  • 0,5x Foam N25, 100x50x4 cm, black
  • 2x Binding Post PK31, gold plated (one pair, red and black)
  • 2m Speaker cable 2x1.5 mm2, transparent
  • 0,5x Pan screws 3.5x17 black, 8 pieces
  • Plan for DIY kit

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

  • Audaphon MKT CAP 68 uF / 160 Vdc
  • 3x Mundorf, electrolytic capacitor, unetched, 100uF / 50 Vdc
  • Mundorf H core coil H71, 27 mH/1.68 0hm
  • Mundorf H core coil H100, 5.6 mH/0.39 0hm
  • Mundorf ferrite core coil H132, 5.6 mH/0.36 Ohm
  • ceramic resistor 3.3 Ohm/20 Watt
  • Metal-oxide resistor, 10W 1.0 Ohm (brown-black-gold)

Kit without cabinet, price per speaker   EUR 164,00 excl. VAT: € 137.82 / $ 155.73

Kit with high-end crossover

The high-end kit is delivered with components of high quality:.

Kit with high-end-crossover without cabinet, price per speaker   EUR 191,00 excl. VAT: € 160.50 / $ 181.37

universal PCB

If you prefer to mount the crossover components on a universal PCB instead on wood
PCB 220x155 mm, order no. I-8805002, price per unit:   EUR 11,70 excl. VAT: € 9.83 / $ 11.11
We recommend one board per kit (2 boards per speaker pair)


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