Omnes Audio Exclusiv 3/8   Shelf speaker as in K+T 5/2016

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 86 dB
  • size (HxWxD): 470 x 290 x 370 mm
  • frequency range (-8dB): 55 - 22000 Hz
  • crossover frequency(s): 4000 Hz
  • speaker type: bass reflex

The Exclusiv 3/8 is an speaker you can build in two versions, as a compact bassreflex speaker, or as a TQWT floorstanding speaker. The plans for both are delivered with the kit. Both are delivered with the Omnes Audio CX 3.0 coax and the Omnes Audio Exclusiv 8 woofer.

Omnes Audio Exclusive 3/8 is developed by Thorsten Fischer.

The crossover consists of a 2nd order high-pass filter (12 dB per octave slope) for the tweeter-part of the coaxial loudspeaker. The midrange part is connected to a 2nd order bandpass filter (12 dB per octave slope). The woofer is connected to a 3rd order low pass filter (18 dB per octave slope).

The frequency response of this speaker is linear. The decay spectrum is nearly perfect. At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are lower than 0.5% above 500 Hz and stays below 1% at 95 dB at 1 m .

Our Exclusive 3/8 kompakt kit consists of

  • Omnes Audio Exclusive 8
  • Omnes Audio, coax driver CX 3.0
  • 2,5x Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 0,5x PE sealing tape, 5x2 mm, 7.5 m
  • Terminal T105 Au, with brass, gold plated
  • 2m Speaker cable 2x1.5 mm2, transparent
  • Pan screws 3.5x17 black, cross recess, 8 pieces
  • Pan screws 4x20 black, cross recess, 8 pieces
  • Plan for DIY kit

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

  • ClarityCap PWA capacitor 33 μF / 250 Vdc
  • Audaphon MKP CAP Superior 3.9 μF / 400 Vdc
  • Audaphon MKP CAP Superior 12 μF / 400 Vdc
  • electrolytic capacitor, unetched, 3.3 μF / 70 Vdc
  • electrolytic capacitor, unetched, 68uF / 50 Vdc
  • 1.0 mm air core coil, 0.56 mH/0.36 Ohm
  • 0.7 mm air core coil, 0.22 mH/0.39 Ohm
  • Audaphon M core coil M12, 2.2 mH/0.2 0hm
  • Audaphon M core coil M14, 4.7 mH/0.24 0hm
  • Mundorf H core coil H71, 1.2 mH/0.27 0hm
  • Metal-oxide resistor, 10W 3.9 Ohm (orange-white-gold)
  • Metal-oxide resistor, 10W 10 Ohm (brown-black-black)

Kit without cabinet, price per speaker   EUR 393,00 excl. VAT: € 330.25 / $ 353.37

Exclusive 3/8 kompakt Kit with high-end crossover

The high-end kit is delivered complete 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. All capacitors are polypropylen or polystyrol type and for the midrange and tweeter Clarity-Cap PX 250V and ESA 630 V are employed.

universal PCBs

If you prefer to mount the crossover components on a universal PCB instead on wood
PCB 220x155 mm, order no. I-8805002, price per unit:   EUR 11,80 excl. VAT: € 9.92 / $ 10.61
We recommend two boards per kit (four boards for a speaker pair)

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