Triple X   Shelf speaker as in K+T 6/2024

Technical data
  • impedance: 6 Ohm
  • sensivity (2,83V/1m): 87 dB
  • size (HxWxD): 430 x 250 x 350 mm
  • frequency range (-8dB): 50 - 18000 Hz
  • crossover frequency(s): Hz
  • speaker type: bass reflex

Triple X is a three way compact speaker.

Triple X is a bass-reflex cabinet loudspeaker with drivers of Celestion .

The kit is delivered with the following drivers:
- a Celestion TFX0615 coaxial driver
- a Celestion CF0820BMB woofer

The loudspeaker has been developed by Frank Kuhl.

The crossover consists of:
- a 2nd order high-pass filter (12 dB per octave slope) for the tweeter.
- a band pass consisting of a 1st order high pass filter (6 dB per octave slope) and a 1st order low-pass filter (6 dB per octave slope) for the mids-woofer.
- a 2nd order low-pass filter (12 dB per octave slope) for 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 below 0,5% above 300 Hz and doesn't exceed 1,3% at 95 dB at 1 m between 300 and 15000 Hz.

An excerpt from the Klang+Ton review (Translation of the author into English)

Conclusion of the magazine Klang+Ton:

Our kit consists of

  • Monacor BR-70TR bass reflex tube
  • Celestion CF0820BMB, 8 Ohm
  • Celestion TFX0615
  • Damping Sonofil 100 x 35 cm for 20 litres
  • Binding Post PK31, gold plated (one pair, red and black)
  • 2m Speaker cable 2x1.5 mm2, transparent
  • 1,5x Allen wood screws, black, 4x25 mm, 8 pieces
  • Plan for DIY kit

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

  • Audaphon MKP CAP Superior 4.7 μF / 400 Vdc
  • Audaphon MKP CAP Superior 8.2 μF / 400 Vdc
  • Audaphon MKT CAP 8.2 μF / 160 Vdc
  • Audaphon MKT CAP 33 μF / 160 Vdc
  • Audaphon MKT CAP 68 μF / 160 Vdc
  • 1.0 mm air core coil, 0.15 mH/0.17 Ohm
  • 1.0 mm air core coil, 0.39 mH/0.29 Ohm
  • 1.0 mm air core coil, 0.47 mH/0.32 Ohm
  • Audaphon M core coil M14, 4.7 mH/0.24 0hm
  • 2x Metal-oxide resistor, 10W 1.2 Ohm (brown-red-gold)
  • Metal-oxide resistor, 10W 3.3 Ohm (orange-orange-gold)
  • Metal-oxide resistor, 10W 4.7 Ohm (yellow-violet-gold)
  • Metal-oxide resistor, 10W 5.6 Ohm (green-blue-gold)
  • Metal-oxide resistor, 10W 8.2 Ohm (grey-red-gold)

Kit without cabinet, price per speaker   EUR 318,00 excl. VAT: € 267.23 / $ 293.95

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 Celestion TFX0615 are of type polypropylen (MKP) Clarity-Cap CSA 250 V.

  • ClarityCap PWA capacitor 68 μF / 160 Vdc
  • ClarityCap CSA capacitor 4.7 μF / 250 Vdc
  • ClarityCap CSA capacitor 8.2 μF / 250 Vdc
  • Audaphon MKT CAP 8.2 μF / 160 Vdc
  • Audaphon MKT CAP 33 μF / 160 Vdc
  • Mundorf baked varnish air core coil BL100, 0.15 mH/0.17 Ohm
  • Mundorf baked varnish air core coil BL100, 0.39 mH/0.29 Ohm
  • Mundorf baked varnish air core coil BL100, 0.47 mH/0.32 Ohm
  • Mundorf vs140 core coil 4.7 mH/0.24Ohm
  • 2x Metal-oxide resistor, 10W 1.2 Ohm (brown-red-gold)
  • Metal-oxide resistor, 10W 3.3 Ohm (orange-orange-gold)
  • Metal-oxide resistor, 10W 4.7 Ohm (yellow-violet-gold)
  • Metal-oxide resistor, 10W 5.6 Ohm (green-blue-gold)
  • Metal-oxide resistor, 10W 8.2 Ohm (grey-red-gold)

Kit with high-end-crossover without cabinet, price per speaker   EUR 384,00 excl. VAT: € 322.69 / $ 354.96

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 8.2 μF / 160 Vdc
  • 0.7 mm air core coil, 0.18 mH/0.36 Ohm
  • ceramic resistor 10 Ohm/20 Watt

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 8,90 excl. VAT: € 7.48 / $ 8.23

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 11,80 excl. VAT: € 9.92 / $ 10.91
We recommend one board per kit (2 boards per speaker pair)


Home   Klang+Ton Overview