Celeste K+T   Shelf speaker as in K+T 6/2014

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 94 dB
  • size (HxWxD): 610 x 520 x 387 mm
  • frequency range (-8dB): 35 - 20000 Hz
  • crossover frequency(s): 1900 Hz
  • speaker type: bass reflex

Celeste is a big compact loudspeaker with Celestion coaxial driver. It is developed by Thomas Schmidt and Holger Barske as bass reflex system.

The coaxial system is as such no longer identifiable because the tweeter is hidden under the dust protection.

The crossover consists of a second order high pass filter (12 dB per octave slope) and a 3rd order low pass filter..

An excerpt from the Klang+Ton review

Our kit consists of

  • Celestion coaxial loudspeaker TF1225CX
  • 2x Damping Sonofil 100 x 35 cm for 20 litres
  • Foam N25, 100x50x4 cm, black
  • Binding Post PK31, gold plated (one pair, red and black)
  • 2m Speaker cable 2x1.5 mm2, transparent
  • Allen wood screws, black, 5x30 mm, 4 pieces
  • Plan for DIY kit

the crossover components (right),
to be mounted on a small wooden board.
  • Audaphon MKP CAP Superior 2.2 uF / 400 Vdc
  • Audaphon MKP CAP Superior 12 uF / 400 Vdc
  • Mundorf, electrolytic capacitor, unetched, 22uF / 70 Vdc
  • 0.7 mm air core coil, 0.33 mH/0.48 Ohm
  • 0.7 mm air core coil, 0.82 mH/0.89 Ohm
  • 1.4 mm air core coil, 0.82 mH/0.26 Ohm
  • 1.4 mm air core coil, 1.8 mH/0.43 Ohm
  • 2x Metal-oxide resistor, 10W 10 Ohm (brown-black-black)

Note: The coils L3 and L4 are delivered with 0.7 mm wire instead of 0.5 mm in the description of magazin K+T.

Kit without cabinet, price per speaker   EUR 319,00 excl. VAT: € 268.07 / $ 310.96

Kit with high-end crossover

Our high-end version employs Mundorf baked varnish air core coils. In series to the tweeter a ClarityCap capacitor of type ESA is used. Elsewhere we deliver Audaphon polypropylen capacitors.

Kit without cabinet, price per speaker   EUR 348,00 excl. VAT: € 292.44 / $ 339.23

Kit with high-end crossover for high electrical stress

Our high-end version for higher levels employs Mundorf copper foil coils. In series to the tweeter instead of one 10 Ohm resistor two resistors of 18 and 22 Ohm in parallel are used.

Kit without cabinet, price per speaker   EUR 431,00 excl. VAT: € 362.18 / $ 420.13

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 15,40 excl. VAT: € 12.94 / $ 15.01

universal PCB

If you prefer to mount the crossover components on a 240 x 165 mm universal PCB instead on wood:
Universal PCB RA240, order no.. I-2767, price per unit:   EUR 7,60 excl. VAT: € 6.39 / $ 7.41
We recommend one board per kit (two boards for a speaker pair)


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