Felis   Shelf speaker as in K+T 6/2021

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 84 dB
  • size (HxWxD): 410 x 210 x 245 mm
  • frequency range (-8dB): 48 - 40000 Hz
  • crossover frequency(s): 2800 Hz
  • speaker type: bass reflex

Felis is a two way compact speaker.

Felis is a bass-reflex cabinet loudspeaker with drivers of Audaphon and Wavecor.

The kit is delivered with the following drivers:
- a Audaphon Neo CD 2.0 ribbon-tweeter
- a Wavecor WF152CU13 woofer

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

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

The frequency response of this speaker is perfectly linear.

The decay spectrum is perfect.

At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 0,8% above 500 Hz and doesn't exceed 1,1% at 95 dB at 1 m between 300 and 15000 Hz.

An excerpt from the Klang+Ton review (Translation of the author into English)

"Didnít I mention it before: I like small boxes with large ribbons. And Felis gives me a lot of arguments for liking her. The bass, which is already deep in the open air, goes a whole lot deeper in the listening room: The 15-centimeter Wavecor also optimally reproduces dynamic bass attacks and implements them with ease. Right up to the midrange, the chassis is extremely linear and balanced, while also being absolutely precise in terms of fine dynamics. The transition to the tweeter is absolutely seamless. This ribbon plays with an absolute ease and dynamism that only this type of chassis is able to implement. The spatial representation is extremely precise - especially with a well-recorded orchestra, it is really fun to soak up the concert hall atmosphere. And when things get a little rough with rock and pop, Felis goes along with it."

Conclusion of the magazine Klang+Ton:

"The Felis is a very elegant loudspeaker, who also goes along with everything acoustically, what you feed it with and that on a very high standard. "

Our kit consists of

  • WF152CU13, Wavecor Mid/Woofer, 8 Ohm, paper / glass fiber, BD, phase plug
  • Audaphon ribbon Neo CD 2.0 aluminium, black, 1/2 package
  • Bass reflex tube HP50, 50x143mm, black
  • Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 0,25x Damping Sonofil 100 x 35 cm for 20 litres
  • Binding Post PK28 I, gold plated (one pair, red and black)
  • 1,5m Speaker cable 2x1.5 mm2 black/red
  • 0,5x Pan screws 3.5x17 black, torx, 8 pieces
  • 0,5x 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 1.0 μF / 400 Vdc
  • Audaphon MKP CAP Superior 2.2 μF / 400 Vdc
  • Audaphon MKP CAP Superior 6.8 μF / 400 Vdc
  • Audaphon MKT CAP 6.8 μF / 160 Vdc
  • Audaphon MKT CAP 15 μF / 160 Vdc
  • 1.3 mm air core coil, 1.5 mH/0.40 Ohm
  • 0.7 mm air core coil, 0.68 mH/0.70 Ohm
  • Mundorf ferrite core coil P50 3.9 mH/1.81Ohm
  • Metal-oxide resistor, 10W 5.6 Ohm (green-blue-gold)
  • Metal-oxide resistor, 10W 10 Ohm (brown-black-black)
  • Metal-oxide resistor, 10W 12 Ohm (brown-red-black)

Kit without cabinet, price per speaker   EUR 422,00 excl. VAT: € 354.62 / $ 397.18

Price for a pair of custom speakers of any color   EUR 2427,00 excl. VAT: € 2039.50 / $ 2284.24

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 Audaphon Neo CD 2.0 are of type polypropylen (MKP) Clarity-Cap ESA 250 V.

  • ClarityCap ESA capacitor 1 μF / 250 Vdc
  • ClarityCap ESA capacitor 2.2 μF / 250 Vdc
  • ClarityCap ESA capacitor 6.8 μF / 250 Vdc
  • Audaphon MKT CAP 6.8 μF / 160 Vdc
  • Audaphon MKT CAP 15 μF / 160 Vdc
  • Mundorf baked varnish air core coil BL71, 0.68 mH/0.71 Ohm
  • Mundorf baked varnish air core coil BL140, 1.5 mH/0.38 Ohm
  • Mundorf ferrite core coil P50 3.9 mH/1.81Ohm
  • Metal-oxide resistor, 10W 5.6 Ohm (green-blue-gold)
  • Metal-oxide resistor, 10W 10 Ohm (brown-black-black)
  • Metal-oxide resistor, 10W 12 Ohm (brown-red-black)

Kit with high-end-crossover without cabinet, price per speaker   EUR 458,00 excl. VAT: € 384.87 / $ 431.06

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).

  • Audaphon MKT CAP 22 μF / 160 Vdc
  • 0.7 mm air core coil, 0.10 mH/0.27 Ohm
  • ceramic resistor 12 Ohm/20 Watt

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 12,20 excl. VAT: € 10.25 / $ 11.48

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 / $ 4.42
We recommend one board per kit (2 boards per speaker pair)

Measurements

measurmentsMeasurements on this speaker

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