Elias X2 W182 SW223   as in K+T 1/2018

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 92 dB
  • size (HxWxD): 1400 x 600 x 109 mm
  • frequency range (-8dB): 33 - 40000 Hz
  • crossover frequency(s): Hz
  • speaker type: closed box
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Elias X2 W182 SW223 is a three way wall-mounted speaker.

Elias X2 W182 SW223 is a closed-cabinet loudspeaker with drivers of Audaphon and Wavecor.

The kit is delivered with the following drivers:
- a Audaphon APR 1.0 tweeter
- two Wavecor WF182CU13 mids driver
- two Wavecor WF223BD02 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 band pass consisting of a 2nd order high pass filter (12 dB per octave slope) and a 3rd order low-pass filter (18 dB per octave slope) for the mids-woofer.
- 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 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 0.1% above 500 Hz and doesn't exceed 0.3% at 95 dB at 1 m between 300 Hz and 7000 Hz. That is quite splendid.

Our kit consists of

  • Audaphon Aluminium Ribbon Tweeter APR 1.0
  • 2x WF182CU13, Wavecor Mid/Woofer, 8 Ohm, paper cone, BD, phase plug
  • 2x Wavecor Mid/Woofer WF223BD02 paper / glass fiber, 8 Ohm
  • 2x Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 2x Damping Sonofil 100 x 35 cm for 20 litres
  • Female banana jacks, red and black
  • 4m Speaker cable 2x1.5 mm2 black/red
  • 4x 8 Allen wood screws M4x40 or 4x30 with drive-in nuts, black
  • Plan for DIY kit

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

  • Audaphon MKP CAP Superior 0.47 uF / 400 Vdc
  • Audaphon MKP CAP Superior 1.0 uF / 400 Vdc
  • Audaphon MKP CAP Superior 2.2 uF / 400 Vdc
  • Audaphon MKP CAP Superior 5.6 uF / 400 Vdc
  • Audaphon MKT CAP 4.7 uF / 160 Vdc
  • Audaphon MKT CAP 8.2 uF / 160 Vdc
  • 3x Audaphon MKT CAP 47 uF / 160 Vdc
  • Mundorf, electrolytic capacitor, etched, 22 uF/100 Vdc
  • Mundorf, electrolytic capacitor, etched, 100 uF/100 Vdc
  • Mundorf air core coil L140, 0.56 mH/0.20 Ohm
  • 1.0 mm air core coil, 0.22 mH/0.21 Ohm
  • 0.7 mm air core coil, 0.47 mH/0.50 Ohm
  • 0.7 mm air core coil, 0.68 mH/0.70 Ohm
  • 0.7 mm air core coil, 0.068 mH
  • Mundorf ferrite core coil F71. 2.2 mH/0.91 Ohm
  • Mundorf H core coil H71, 3.3 mH/0.47 0hm
  • Monacor transformer coil LSI-56T, 5.6mH/0.15 Ohm
  • 2x ceramic resistor 3.9 Ohm/20 Watt
  • Metal-oxide resistor, 10W 2.2 Ohm (red-red-gold)
  • Metal-oxide resistor, 10W 3.3 Ohm (orange-orange-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 1410,00 excl. VAT: € 1184.87 / $ 1374.45

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 mids woofer are of type polypropylen (MKP) Clarity-Cap.

Kit with high-end-crossover without cabinet, price per speaker   EUR 1477,00 excl. VAT: € 1241.18 / $ 1439.76

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 8,75 excl. VAT: € 7.35 / $ 8.53

universal PCB

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 11,70 excl. VAT: € 9.83 / $ 11.41
We recommend one board per kit (2 boards per speaker pair)

You can also build the Elias X2 W182 SW223 with a finished housing from BD Audio Engineering Bernd Dörfler.


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