CT 248XXL, Shelf speaker   as in K+T 5/2010

   
Technical data
- impedance: 8 Ohm
- sensivity (2,83V/1m): 84 dB
- size (HxWxD): 1018 x 308 x 388 mm
- frequency range (-8dB): 18 - 25000 Hz
- crossover frequency(s): 500, 2800 Hz
- speaker type: bass reflex

The high-end version 248 XL was derived from theCT248.

This speaker was improved again with this particular kit:bass is now supported with a Seas Excel W22 EX001.

All three speakers are controlled by a passive crossover.

An excerpt from the Klang+Ton review

... "This speaker is not only more in control and more complete than we expected, it's a completely different speaker. To be full of energy and relaxed at the same time is fairly rare. Guitar strings, bass strings, drum heads - everything is tight, explosive and powerful, but at the same time also completely relaxed and easy-going. Vocals are reproduced realistically and without even a hint of unnatural harshness. The bass is deep, punchy, tight and fast, exactly as it is required by the music. The tweeter resolves beautifully and sounds more expensive than it is. The transitions between the individual drivers are seamless, everything is flawless. Power handling is astonishingly high and the sound remains pleasant even at the limit: the limits are noticeable but the ears are not hurting; you just reduce the volume a little. The extension of the musical stage is just right, exactly how it should be and the performers are are staggered accurately. This all might sound quite unemotional, but means nothing else than the illusion of being there and the gooseflesh that goes with it."

Our kit consists of

  • Seas 22 TAF/G (H 1283)
  • Seas Excel W15 CH 001
  • Seas Excel woofer W22EX001
  • 4 pcs Bondum 800
  • 2,5 pcs Polyester damping material, 125 g for 20L volume
  • 2 pairs Binding Posts
  • 4m Speaker cable 2x2.5 mm2, highly flexible, transparent
  • Pan screws 3.5x17 black, 12 pieces
  • Allen wood screws, black, 4X25MM, 8 pieces
  • Plan for DIY kit

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

  • MKT capacitor 8.2uF
  • MKT capacitor 47uF
  • MKP capacitor 33uF / 400V (Audyn-Cap)
  • MKP capacitor Q4 2.2uF / 400V
  • MKP capacitor Q4 15uF / 400V
  • 2 pcs Clarity CAP ESA 3.3uF / 800V
  • Baked varnish air core coil 0.15 mH/0.21 Ohm
  • Baked varnish air core coil 0.33 mH/0.32 Ohm
  • Baked varnish air core coil 0.39 mH/0.37 Ohm
  • I-core coil 4.7 mH/0.26 Ohm
  • Ceramic resistor 10 Ohm/20 Watt
  • MOX10 resistor 1.0 Ohm/10Watt (brown-black-gold)
  • MOX10 resistor 2.7 Ohm/10Watt (red-purple-gold)
  • MOX10 resistor 3.3 Ohm/10Watt (orange-orange-gold)
  • MOX10 resistor 6.8 Ohm/10Watt (blue-grey-gold)
  • MOX10 resistor 12 Ohm/10Watt (brown-red-black)

Kit without cabinet, price per speaker EUR 719,00 excl. VAT: € 604.20 / $ 688.79

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 / $ 7.28
We recommend one board per kit (two boards for a speaker pair)

Kit with high-end crossover

In our high-end version Jantzen Z-Superior capacitors are used in the signal path to the tweeter. In the signal path to the woofer baked varnish air coils are used; in parallel to the woofer foil capacitors are delivered.

  • MKP capacitor 8.2 uF / 400V
  • 2 pcs MKP capacitor 33 uF / 400V
  • Jantzen Z-Superior MKP capacitor 4.7 uF / 800 VDC
  • Jantzen Z-Superior MKP capacitor 15 uF / 800 VDC
  • 0.7 mm air core coil, 0.68 mH/0.70 Ohm
  • 0.7 mm air core coil, 0.05 mH
  • Mundorf baked varnish air core coil BL100, 0.27 mH/0.23 Ohm
  • Mundorf baked varnish air core coil BL100, 1.0 mH/0.49 Ohm
  • MOX10 resistor 0.47 Ohm/10Watt (yellow-purple-silver)
  • MOX10 resistor 1.0 Ohm/10Watt (brown-black-gold)
  • MOX10 resistor 3.9 Ohm/10Watt (orange-white-gold)
  • MOX10 resistor 8.2 Ohm/10Watt (grey-red-gold)

Kit with high-end crossover without cabinet, price per speaker EUR 809,00 excl. VAT: € 679.83 / $ 775.01

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 / $ 7.28
We recommend one board per kit (two boards for a speaker pair)
 


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