Leonis   wall-mounted speaker as in K+T 1/2020

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 85 dB
  • size (HxWxD): 550 x 550 x 90 mm
  • frequency range (-8dB): 38 - 24000 Hz
  • crossover frequency(s): 1700 Hz
  • speaker type: bass reflex

Leonis is a two way wall-mounted speaker.

Leonis is a bass-reflex cabinet loudspeaker with drivers of Wavecor .

The kit is delivered with the following drivers:
- a Wavecor TW022WA5 tweeter
- a Wavecor WF152CU14 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 nearly perfect.

At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 0.5% above 400 Hz and doesn't exceed 0.5% at 95 dB at 1 m between 400 and 15000 Hz.

Our kit consists of

  • Wavecor silk dome tweeter TW022WA05, 4 Ohm
  • WF152CU14, Wavecor Mid/Woofer, 8 Ohm, paper cone, BD, phase plug
  • 8x Bass reflex tube HP35, 35x125 mm, black
  • 0,5x Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • Damping Sonofil 100 x 35 cm for 20 litres
  • Female banana jacks, red and black
  • 2m Speaker cable 2x1.5 mm2 black/red
  • Pan screws 3.5x17 black, torx, 8 pieces
  • Plan for DIY kit

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

  • Audaphon MKP CAP Superior 2.7 μF / 400 Vdc
  • Audaphon MKP CAP Superior 5.6 μF / 400 Vdc
  • Audaphon MKP CAP Superior 15 μF / 400 Vdc
  • Audaphon MKT CAP 10 μF / 160 Vdc
  • Audaphon MKT CAP 47 μF / 160 Vdc
  • 1.0 mm air core coil, 1.2 mH/0.54 Ohm
  • 1.3 mm air core coil, 1.8 mH/0.45 Ohm
  • 0.7 mm air core coil, 0.56 mH/0.55 Ohm
  • ceramic resistor 6.8 Ohm/20 Watt
  • Metal-oxide resistor, 10W 3.3 Ohm (orange-orange-gold)

Kit without cabinet, price per speaker   EUR 315,83 excl. VAT: € 272.27 / $ 318.55

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 Wavecor TW022WA5 are of type polypropylen (MKP) Clarity-Cap ESA 250 V.

Kit with high-end-crossover without cabinet, price per speaker   EUR 362,62 excl. VAT: € 312.60 / $ 365.75

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 13,50 excl. VAT: € 11.64 / $ 13.62

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 4,58 excl. VAT: € 3.95 / $ 4.62
We recommend one board per kit (2 boards per speaker pair)

Measurements

measurmentsMeasurements on this speaker

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