Naos   Floorstanding as in K+T 5/2017

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 90 dB
  • size (HxWxD): 1350 x 250 x 360 mm
  • frequency range (-8dB): 30 - 24000 Hz
  • crossover frequency(s): 2000 Hz
  • speaker type: bass reflex

Naos is a two way floorstanding speaker.

Naos is a bass-reflex cabinet loudspeaker with drivers of Alcone and Wavecor.

The kit is delivered with the following drivers:
- a Alcone AC15 tweeter
- two Wavecor WF182CU13 midrange / bass driver

The loudspeaker has been developed by Thomas Schmidt, Daniel Gattig and Dennis Frank.

The crossover consists of:
- a 2nd order high-pass filter (12 dB per octave slope) for the tweeter.
- a 3rd order low-pass filter (18 dB per octave slope) for the woofer.

The frequency response of this speaker is linear. The decay spectrum is perfect. At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 0.2% above 400 Hz and doesn't exceed 0.5% at 95 dB at 1 m between 500 and 8000 Hz. That is quite splendid.

Our kit consists of

  • Alcone tweeter AC15, fabric tweeter 95 dB
  • 2x WF182CU13, Wavecor Mid/Woofer, 8 Ohm, paper cone, BD, phase plug
  • Bass reflex tube HP100, 100x200 mm, black
  • 3x Damping Sonofil 100 x 35 cm for 20 litres
  • Binding Post PK28 I, gold plated (one pair, red and black)
  • 3m Speaker cable 2x1.5 mm2 black/red
  • 1,5x Pan screws 3.5x17 black, 8 pieces
  • 0,5x Pan screws 4x20 black, 8 pieces
  • Plan for DIY kit

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

  • Audaphon MKP CAP Superior 6.8 uF / 400 Vdc
  • Audaphon MKT CAP 8.2 uF / 160 Vdc
  • Audaphon MKT CAP 10 uF / 160 Vdc
  • Mundorf air core coil L140, 0.47 mH/0.19 Ohm
  • Mundorf air core coil L140, 1.5 mH/0.38 Ohm
  • 0.7 mm air core coil, 0.68 mH/0.70 Ohm
  • Metal-oxide resistor, 10W 3.9 Ohm (orange-white-gold)
  • Metal-oxide resistor, 10W 15 Ohm (brown-green-black)

Kit without cabinet, price per speaker   EUR 560,00 excl. VAT: € 470.59 / $ 531.76

Kit with high-end crossover

The high-end kit is delivered with baked varnish air core coils 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 driver are of type polypropylen (MKP) Clarity-Cap CSA and Audaphon MKP.

Kit with high-end-crossover without cabinet, price per speaker   EUR 593,00 excl. VAT: € 498.32 / $ 563.10

Impedance correction

If you want to use a valve amplifier with this speaker an impedance correction should be employed. In this case the component quality is less important; therefore, we offer only one kit (upon request higher quality components are available).


Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 13,60 excl. VAT: € 11.43 / $ 12.91

universal PCB

If you prefer to mount the crossover components on a universal PCB instead on wood
PCB 150x115 mm, tin plated, price per unit:   EUR 4,70 excl. VAT: € 3.95 / $ 4.46
We recommend one board per kit (2 boards per speaker pair)


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