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Stra To Cauchy 2

Floorstanding Speaker Alcone Cauchy 2 MK2       Lab Results   Building Instruction  

After launching the Cauchy we were asked why no floorstanding speakers with large subwoofer are available; well, here you are: Cauchy 2, showing a strong resemblance to Cauchy. Alcone Cauchy 2
 

Cauchy 2 shows the following characteristics:

  • 3 way bass reflex, floorstanding speaker with outstanding, powerful bass
  • excellent power handling with top bass foundation
  • extremely clean bass, easily adaptable to room conditions
  • well balanced sound and good three-dimensionality
  • high quality components (minimum MKP capacitors)
  • not to tall (height x width x depth): 99 x 31 x 44 cm

Alcone AC 6.5 HE

Technical data:

  • frequency response: 30-25 000 Hz (-8dB)
  • crossover frequencies: 250, 2200 Hz
  • average SPL: 88 dB (2,83V/1m)
  • impedance: 5 Ohm

The Alcone Cauchy 2 kit contains:

  • 1 x Seas TWS 27-6 tweeter
  • 1 x Alcone AC 6.5 midrange/bass driver
  • 2 x Alcone AC 10 HE high-end bass drivers
  • 1 x terminal with gold plated brass binding posts
  • 5 x bags damping material
  • 1/2 x N25 nap foam
  • 1 x crossover - as kit, see below
  • 24 x screws 4 x 20 mm
  • sealing foam tape for the drivers
  • 6m cable 2x2,5 mm2, for internal wiring)
  • 12 x HP 50 bass reflex tube
  • description and building instruction
The crossover consists of:
  • 8.2 mH i-core coil/0.49 Ohm
  • 6.8 mH core coil
  • 1 mH air core coil/1.4 mm
  • 0.27 mH air core coil/0.7 mm
  • 2x resistors 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
  • 15 uF MKP capacitor/400V
  • 68 uF MKP capacitor/400V
  • 2x 6.8 uF MKP capacitor/400V
  • 8.2 uF Mundorf MCAP capacitor/400V
  • 15 uF Mundorf MCAP capacitor/400V
Frequenzgang Cauchy 2
 
Picture left: the frequency response.

It's linear
the bass goes
down to
29 Hz (DIN,
-10 dB)

Alcone AC 10 HE
Sound description: Despite the small size the Cauchy 2 produces an enormous bass, without booming. Bass is rather clean and tight. A masterpiece for large rooms.

Price per unit without cabinet EUR 611,00 excl. VAT: € 513.45 / $ 590.46

If you prefer to mount the crossover components on a universal PCB instead on wood:
PCB 220x155 mm, Order No. I-8805002,     price   EUR 11,70 excl. VAT: € 9.83 / $ 11.31

High-End Version

If you wish to use highest quality component s we recommend the following parts:
- the high frequency section of the crossover should be equipped with Mundorf Supreme CAP or oil capacitors.

Please enquire if you request any other modification

Cauchy 2 Building Instruction   Lab Results   Home