Omnes Audio Power Duo   Shelf speaker as in K+T 1/2018

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 87 dB
  • size (HxWxD): 700 x 540 x 280 mm
  • frequency range (-8dB): 48 - 22000 Hz
  • crossover frequency(s): Hz
  • speaker type: dipol

Omnes Audio Power Duo is a two way compact speaker.

Omnes Audio Power Duo is a closed-cabinet loudspeaker with drivers of Omnes Audio and Tang Band.

The kit is delivered with the following drivers:
- a Tang Band W5-1880 full range driver
- a Omnes Audio OBW15PA woofer

The loudspeaker has been developed by Blue Planet Acoustic.

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

The frequency response of this speaker is nearly linear.

The decay spectrum (waterfall spectrum) shows a decelerated swing-out behaviour in the mid-range.

At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 0.8% above 250 Hz and doesn't exceed 0.8% at 95 dB.

Our kit consists of

  • Tang Band W5-1880
  • Omnes Audio OBW15PA
  • Binding post terminal PK2-LS, gold plated
  • 2m Speaker cable 2x1.5 mm2, transparent
  • 1,5x Pan screws 4x20 black, cross recess, 8 pieces
  • Plan for DIY kit

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

  • ClarityCap PWA capacitor 8.2 uF / 160 Vdc
  • ClarityCap PWA capacitor 33 uF / 160 Vdc
  • Mundorf, electrolytic capacitor, etched, 56 uF/100 Vdc
  • Mundorf, electrolytic capacitor, unetched, 100uF / 50 Vdc
  • 0.7 mm air core coil, 0.27 mH/0.44 Ohm
  • 0.7 mm air core coil, 2.7 mH/1.53 Ohm
  • Mundorf H core coil H100, 3.9 mH/0.3 0hm
  • Mundorf H core coil H100, 6.8 mH/0.46 0hm
  • Metal-oxide resistor, 10W 5.6 Ohm (green-blue-gold)
  • Metal-oxide resistor, 10W 6.8 Ohm (blue-grey-gold)

Kit without cabinet, price per speaker   - not available

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 fullrange driver are of type polypropylen (MKP) Clarity-Cap SA 630 V.

Kit with high-end-crossover without cabinet, price per speaker   - not available

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 27,35 excl. VAT: € 22.98 / $ 26.66

universal PCB

If you prefer to mount the crossover components on a 240 x 165 mm universal PCB instead on wood:
Universal PCB RA240, order no.. I-2767, price per unit:   EUR 7,60 excl. VAT: € 6.39 / $ 7.41
We recommend one board per kit (two boards for a speaker pair)


Home   Klang+Ton Overview