Lucy Ribbon   wall-mounted speaker as in K+T 2/2020

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 85 dB
  • size (HxWxD): 1000 x 300 x 90 mm
  • frequency range (-8dB): 40 - 24000 Hz
  • crossover frequency(s): 3000 Hz
  • speaker type: bass reflex

Lucy Ribbon is a two way wall-mounted speaker.

Lucy Ribbon 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 WF152CU14 woofer

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

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 frequency response of this speaker is nearly linear.

The decay spectrum as shown in the waterfall diagram is exemplary, free of any disturbing resonance.

At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 0,4% above 300 Hz and doesn't exceed 0,6% at 95 dB at 1 m between 300 and 15000 Hz.

Our kit consists of

  • Audaphon ribbon Neo CD 2.0 aluminium, black, 1/2 package
  • WF152CU14, Wavecor Mid/Woofer, 8 Ohm, paper cone, BD, phase plug
  • 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
  • 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 2.7 μF; / 400 Vdc
  • Audaphon MKT CAP 3.3 μF; / 160 Vdc
  • Audaphon MKT CAP 6.8 μF; / 160 Vdc
  • 1.4 mm air core coil, 1.15 mH/0.32 Ohm
  • 0.7 mm air core coil, 0.47 mH/0.50 Ohm
  • Mundorf ferrite core coil F50 4.7mH/2.15Ohm
  • 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 388,94 excl. VAT: € 335.29 / $ 395.65

Price for a pair of custom speakers of any color   EUR 3740,27 excl. VAT: € 3224.37 / $ 3804.76

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 2.7 μF; / 250 Vdc
  • Audaphon MKP CAP Superior 3.3 μF; / 400 Vdc
  • Audaphon MKP CAP Superior 6.8 μF; / 400 Vdc
  • Mundorf baked varnish air core coil BL71, 0.47 mH/0.57 Ohm
  • 1.4 mm air core coil, 1.15 mH/0.32 Ohm
  • Mundorf ferrite core coil F50 4.7mH/2.15Ohm
  • 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 403,56 excl. VAT: € 347.90 / $ 410.52

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 15 μF; / 160 Vdc
  • 0.7 mm air core coil, 0.33 mH/0.48 Ohm
  • ceramic resistor 10 Ohm/20 Watt

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 11,70 excl. VAT: € 10.09 / $ 11.90

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 / $ 4.66
We recommend one board per kit (2 boards per speaker pair)

Measurements

measurmentsMeasurements on this speaker

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