Double Fifteen   Floorstanding as in K+T 5/2021

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 94 dB
  • size (HxWxD): 1200 x 500 x 400 mm
  • frequency range (-8dB): 38 - 20000 Hz
  • crossover frequency(s): 200, 2000 Hz
  • speaker type: dipol

Double Fifteen is a two and a half way floorstanding speaker with two 15 inch drivers.

Double Fifteen is a dipole loudspeaker with drivers of Omnes Audio .

The kit is delivered with the following drivers:
- a Omnes Audio CX15 coaxial driver
- a Omnes Audio OBW15PA woofer

The loudspeaker has been developed by Thomas Schmidt.

The crossover consists of:
- a 2nd order high-pass filter (12 dB per octave slope) for the tweeter.
- a 2nd order low-pass filter (12 dB per octave slope) for the woofer.

The decay spectrum (waterfall spectrum) shows a decelerated swing-out behaviour in the mid-range.

At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 0,9% above 300 Hz and doesn't exceed 2,7% at 95 dB at 1 m between 300 and 15000 Hz.

Our kit consists of

  • Omnes Audio OBW15PA
  • Omnes Audio CX15
  • Binding Post PK31, gold plated (one pair, red and black)
  • 3m Speaker cable 2x1.5 mm2, transparent
  • 2x Pan screws 4x20 black, torx, 8 pieces
  • Plan for DIY kit

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

  • Audaphon MKP CAP Superior 8.2 μF / 400 Vdc
  • Audaphon MKP CAP Superior 15 μF / 400 Vdc
  • Audaphon MKT CAP 33 μF / 160 Vdc
  • Audaphon MKT CAP 47 μF / 160 Vdc
  • Audaphon MKT CAP 100 μF / 160 Vdc
  • 1.0 mm air core coil, 0.68 mH/0.39 Ohm
  • 0.7 mm air core coil, 0.15 mH/0.28 Ohm
  • 0.7 mm air core coil, 0.33 mH/0.48 Ohm
  • Mundorf bs140 core coil 6.8 mH/0.3Ohm
  • ceramic resistor 1.8 Ohm/20 Watt
  • Metal-oxide resistor, 10W 4.7 Ohm (yellow-violet-gold)
  • Metal-oxide resistor, 10W 6.8 Ohm (blue-grey-gold)
  • Metal-oxide resistor, 10W 8.2 Ohm (grey-red-gold)
  • Metal-oxide resistor, 10W 10 Ohm (brown-black-black)

Kit without cabinet, price per speaker   EUR 579,00 excl. VAT: € 486.55 / $ 574.13

Kit with high-end crossover

The high-end kit is delivered with baked varnish air core coils on important parts of the crossover for minimizing microphonic effects. - The current flow through the coil creates a magnetic field which sets the reel of wire in motion. This motion induces a voltage in the coil which adds itself to the signal. The stiffer the reel of wire is, the less the signal will be altered. The capacitors for the Omnes Audio CX15 are of type polypropylen (MKP) Clarity-Cap ESA 250 V.

  • ClarityCap ESA capacitor 8.2 μF / 250 Vdc
  • ClarityCap ESA capacitor 15 μF / 250 Vdc
  • Audaphon MKT CAP 33 μF / 160 Vdc
  • Audaphon MKT CAP 47 μF / 160 Vdc
  • Audaphon MKT CAP 100 μF / 160 Vdc
  • Mundorf baked varnish air core coil BL71, 0.15 mH/0.28 Ohm
  • Mundorf baked varnish air core coil BL71, 0.33 mH/0.48 Ohm
  • Mundorf baked varnish air core coil BL100, 0.68 mH/0.39 Ohm
  • Mundorf bs180 core coil 6.8 mH/0.21 Ohm
  • ceramic resistor 1.8 Ohm/20 Watt
  • Metal-oxide resistor, 10W 4.7 Ohm (yellow-violet-gold)
  • Metal-oxide resistor, 10W 6.8 Ohm (blue-grey-gold)
  • Metal-oxide resistor, 10W 8.2 Ohm (grey-red-gold)
  • Metal-oxide resistor, 10W 10 Ohm (brown-black-black)

Kit with high-end-crossover without cabinet, price per speaker   EUR 616,00 excl. VAT: € 517.65 / $ 610.82

universal PCB

If you prefer to mount the crossover components on a universal PCB instead on wood
PCB 220x155 mm, order no. I-8805002, price per unit:   EUR 11,80 excl. VAT: € 9.92 / $ 11.70
We recommend one board per kit (2 boards per speaker pair)


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