Omnes Audio No.4 Royal   Shelf speaker as in K+T 3/2016

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 83 dB
  • size (HxWxD): 230 x 162 x 200 mm
  • frequency range (-8dB): 52 - 38000 Hz
  • crossover frequency(s): Hz
  • speaker type: bass reflex

No.4 Royal is an high quality compact speaker with fullrange driver. The fullrange speaker is the Tang Band W4-1879.

No.4 Royal is developed by Thorsten Fischer.

The crossover consists of two wave trap circuits smoothing the frequency response.

The frequency response of this speaker is linear. The decay spectrum shows small artifacts in the midrange, but this artifacts are no problem for the sound. At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are lower than 0.5% above 500 Hz and doesn't exceed 1% at 95 dB at 1 m .

Our kit consists of

  • Tang Band W4-1879
  • Bass reflex tube Streamline 30
  • Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 0,5x PE sealing tape, 5x2 mm, 7.5 m
  • Binding Post PK31, gold plated (one pair, red and black)
  • 1m Speaker cable 2x1.5 mm2, transparent
  • 0,5x Pan screws 4x20 black, cross recess, 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 18 μF / 400 Vdc
  • Mundorf air core coil L140, 0.12 mH/0.1 Ohm
  • Mundorf air core coil L140, 0.47 mH/0.19 Ohm
  • Metal-oxide resistor, 10W 3.9 Ohm (orange-white-gold)
  • Metal-oxide resistor, 10W 5.6 Ohm (green-blue-gold)

Kit without cabinet, price per speaker   EUR 293,00 excl. VAT: € 246.22 / $ 263.45

Kit with high-end crossover

The high-end kit is delivered with backlack air 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. All capacitors are Clarity-Cap ESA 250 V.

Kit with high-end-crossover without cabinet, price per speaker   EUR 331,00 excl. VAT: € 278.15 / $ 297.62

universal PCBs

If you prefer to mount the crossover components on a 140 x 102 mm universal PCB instead on wood:
Universal PCB RA140, order no.. str-RA140, price per unit:   EUR 4,20 excl. VAT: € 3.53 / $ 3.78
We recommend one board per kit (two boards for a speaker pair)

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