Alcone Cauchy MK2       Lab Results   Building Instruction  

The Cauchy was designed with those customers in mind who prefer shelf speakers that are not taller than 65 cm, but still have a powerful bass. Alcone Cauchy
 

The Cauchy shows the following characteristics:

  • 3 way bass reflex speaker in compact design
  • well balanced sound and excellent three-dimensionality
  • high power handling with substantial bass
  • high quality components (at least MKP capacitors)
  • compact size (height x width x depth): 61 x 31 x 39 cm

Alcone AC 6.5 HE

Technical data:

  • frequency response: 30-25 000 Hz (-8dB)
  • crossover frequency: 250, 2200 Hz
  • average SPL: 88 dB (2.83V/1m)
  • impedance: 5 Ohm

The Alcone Cauchy kit contains:

  • 1 x Seas TWS 27-6 tweeter
  • 1 x AC 6.5 midrange / bass driver
  • 1 x Alcone AC 10 HE high-end bass driver
  • 1 x terminal with gold plated brass binding posts
  • 3 x bags damping material
  • 1 x crossover, as kit see below
  • 18 x screws 4 x 20 mm
  • foam sealing tape for drivers
  • 4 metre cable for internal wiring 2x2.5 mm2)
  • 6 x HP 50 bass reflex tubes
  • description and building instruction
The crossover consists of:
  • 3.9 mH i-point coil/0.24 Ohm
  • 6.8 mH core coil
  • 1 mH air core coil/1.4 mm
  • 0.27 mH air core coil/0.7 mm
  • resistor 10 Ohm/20 Watt
  • 1.8 Ohm MOX10.resistor (brown-grey-gold)
  • 1.5 Ohm MOX4 resistor (brown-green-gold)
  • 0.1 mH air core coil/0.7 mm
  • 33 μF MKP capacitor/400V
  • 68 μF MKP capacitor/400V
  • 2x 6.8 μF MKP capacitor/400V
  • 8.2 μF Mundorf MCAP capacitor/400V
  • 15 μF Mundorf MCAP capacitor/400V
Frequenzgang Cauchy
 
Picture left: frequency response.

response is flat
the speaker goes
down to
29 Hz (DIN,
-10 dB)

Alcone AC 10 HE
Review: Despite the small size the Cauchy produces an enormous bass that is not boomy but exceptionally clean and dry. A masterpiece in a small cabinet .

Price per speaker without cabinet - not available

If you prefer to mount the crossover components on a universal PCB instead on wood:
PCB 220x155 mm, Order No. I-8805002,     price   EUR 11,80 excl. VAT: € 9.92 / $ 11.30

High-end version

If you wish to use high quality components we recommend the following changes:
- the high frequency signal path of the crossover may be equipped with Mundorf Supreme CAP or oil capacitors.

Further tweaking components upon request

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