Viking (CT 312)   Floorstanding as in K+T 6/2020

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 85 dB
  • size (HxWxD): 1000 x 260 x 340 mm
  • frequency range (-8dB): 28 - 20000 Hz
  • crossover frequency(s): 1600 Hz
  • speaker type: bass reflex

Viking (CT312) is a two way floorstanding speaker.

Viking (CT312) is a bass-reflex cabinet loudspeaker with drivers of Kenford and Visaton.

The kit is delivered with the following drivers:
- a Kenford COMP-44A mit Dayton H08RW horn with driver
- a Visaton W 200 S 8 Ohm woofer

The loudspeaker has been developed by Frank Zeppelin and Thomas Schmidt.

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

The frequency response of this speaker is mostly linear.

The decay spectrum is nearly perfect.

At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 1% above 250 Hz and doesn't exceed 2% at 95 dB at 1 m between 300 and 15000 Hz.

Our kit consists of

  • Dayton H08RW 8 inch Round Waveguide 1 inch threaded
  • Visaton W200 S, 8 Ohm
  • Kenford COMP-44A
  • Bass reflex tube HP70, 70x220m, black
  • 5x Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 0,5x PE sealing tape, 5x2 mm, 7.5 m
  • Damping Sonofil 100 x 35 cm for 20 litres
  • Bitumex board 32.5 x 24.5 cm, 5,5 mm
  • Binding Post PK31, gold plated (one pair, red and black)
  • 2m Speaker cable 2x1.5 mm2, transparent
  • Pan screws 4x20 black, cross recess, 8 pieces
  • 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 2.2 μF; / 400 Vdc
  • Audaphon MKT CAP 8.2 μF; / 160 Vdc
  • Audaphon MKT CAP 22 μF; / 160 Vdc
  • Mundorf air core coil L140, 1.2 mH/0.33 Ohm
  • 2x 1.0 mm air core coil, 0.27 mH/0.23 Ohm
  • Metal-oxide resistor, 10W 2.7 Ohm (red-purple-gold)
  • Metal-oxide resistor, 10W 8.2 Ohm (grey-red-gold)
  • Metal-oxide resistor, 10W 10 Ohm (brown-black-black)

Kit without cabinet, price per speaker   EUR 187,00 excl. VAT: € 161.21 / $ 188.61

Kit with high-end crossover

The high-end kit is delivered with baked varnish air core coils 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 Kenford COMP-44A mit Dayton H08RW are of type polypropylen (MKP) Clarity-Cap CSA 630 V.

  • ClarityCap CSA capacitor 2.2 μF; / 630 Vdc
  • Audaphon MKP CAP Superior 8.2 μF; / 400 Vdc
  • Audaphon MKP CAP Superior 22 μF; / 400 Vdc
  • 2x Mundorf baked varnish air core coil BL100, 0.27 mH/0.23 Ohm
  • Mundorf baked varnish air core coil BL140, 1.2 mH/0.34 Ohm
  • Metal-oxide resistor, 10W 2.7 Ohm (red-purple-gold)
  • Metal-oxide resistor, 10W 8.2 Ohm (grey-red-gold)
  • Metal-oxide resistor, 10W 10 Ohm (brown-black-black)

Kit with high-end-crossover without cabinet, price per speaker   EUR 215,00 excl. VAT: € 185.34 / $ 216.85

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).

  • Audaphon MKT CAP 15 μF; / 160 Vdc
  • 0.7 mm air core coil, 0.15 mH/0.28 Ohm
  • ceramic resistor 8.2 Ohm/20 Watt

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 11,31 excl. VAT: € 9.75 / $ 11.41

universal PCB

If you prefer to mount the crossover components on a universal PCB instead on wood
PCB 150x115 mm, tin plated, price per unit:   EUR 4,58 excl. VAT: € 3.95 / $ 4.62
We recommend one board per kit (2 boards per speaker pair)


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