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Descartes II

The review in Klang + Ton 2/2006 was excellent.

After the Descartes I, his first masterpiece, Dennis Frank developed the Descartes II. His goal was to produce a loudspeaker with an extremely high efficiency. For this the Alcone AC 15 with 94 dB (2.83V/1m) is just the right thing.

The two Alcone AC 6.5 HE also reach the required efficiency. Since this driver does an excellent job in a speaker like the Pascal, it was the natural choice for the Descartes II.

There was still the question which bass driver should be used: sure, there are quite a few that have an efficiency of 94 dB, but then the cabinet might get too big or there is not enough low bass. Dennis Frank chose a different way. The bass had to be active. Two Alcone AC 8 HE are the perfect solution.

Alcone Descartes II aus K+T 2/2006

The Descartes II shows the following characteristics:

  • extremely clean bass
  • excellent bass peak handling
  • well balanced sound and exemplary three-dimensionality
  • exceptional transparency
  • extremely low bass

Technical data:

  • Masse (HxWxD): 1345 x 258 x 630 mm
  • power handling: 140 / 250 W continuous/programme
  • with active bass 80/160 Watt continuous/programme
  • frequency response: adjustable-20 000 Hz (-8dB)
  • crossover frequencies: 150 and 2200 Hz
  • average SPL: 93 dB (2.83V/1m)
  • impedance: 4 Ohm
Alcone AC 15
Alcone AC 6.5 HE
Alcone AC 8 HE
The Alcone Descartes II kit contains:

The crossover consists of:

  • 5.6 mH core coil
  • 0.82 mH air core coil, 1.4 mm
  • 0.15 mH air core coil, 1 mm
  • 0.27 mH baked varnish coil, 0.9 mm
  • 100 uF + 2x 82 uF ELCO non-etched
  • 2x Mundorf MKP capacitors 15 uF / 400 V
  • Mundorf MKP capacitor 6.8 uF / 400 V
  • Mundorf MKP capacitor 4.7 uF / 400 V
  • MOX10 resistor 1 Ohm
Price per speaker without cabinet EUR 698,00 excl. VAT: € 586.55 / $ 662.81

If you prefer to mount the crossover components on a universal PCB instead on wood:
PCB, non tin plated, Order No. I-8805002,     Price   EUR 11,70 excl. VAT: € 9.83 / $ 11.11

Building Instruction

Descartes II, high-end version with digital signal processor

Audaphon AMP-24
 

The Descartes II is available with a digital signal processor and two power amplifiers (one for each subwoofer channel).

The DSP plate amplifier provides:

Additional information on digital signal processors (DSP): what is a DSP?, Tuning according to room conditions and Examples Of DSP use (e.g. in subwoofers).

In addition we deliver for the mid speaker and the tweeter a highend passive crossover.

The crossover consists of:

For internal wiring 6 metres of Inakustik Premium Silver (silver plated) with 2x2.5 mm2 are included.

Price per high-end speaker without cabinet EUR 1135,00 excl. VAT: € 953.78 / $ 1077.77

If you prefer to mount the crossover components on a universal PCB instead on wood we recommend 2 PCB's per speaker:
PCB, partly non tin plated, Order No. I-8805002,     Price   EUR 11,70 excl. VAT: € 9.83 / $ 11.11

Building Instruction
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