WaveBySide 223 AMT   Floorstanding as in Hobby Hifi 4-5/2024

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 85 dB
  • size (HxWxD): 1000 x 220 x 360 mm
  • frequency range (-8dB): 30 - 35000 Hz
  • crossover frequency(s): 150, 2400 Hz
  • speaker type: bass reflex

WaveBySide 223 AMT is a three way floorstanding speaker.

WaveBySide 223 AMT is a bass-reflex cabinet loudspeaker with drivers of Mundorf and Wavecor.

The kit is delivered with the following drivers:
- a Mundorf AMTU80W1.1 air motion transformer (ribbon-tweeter)
- a Wavecor WF182BD09 mids driver
- a Wavecor WF223BD02 woofer

The loudspeaker has been developed by Bernd Timmermanns.

The crossover consists of:
- a 3rd order high-pass filter (18 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 medium volume, i.e. 90 dB at 1 m, the nonlinear distortions are below 0,5% above 200 Hz.

An excerpt from the Hobby HiFi review

Conclusion of the magazine Hobby HiFi:

Our kit consists of

  • Mundorf AMTU80W1.1
  • Wavecor Mid/Woofer WF182BD09 glass fiber, die cast, 4 Ohm
  • Wavecor Mid/Woofer WF223BD02 paper / glass fiber, 8 Ohm
  • 2x Bass reflex tube HP100, 100x197 mm, black
  • Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 0,5x PE sealing tape, 5x2 mm, 7.5 m
  • Damping Sonofil 100 x 35 cm for 20 litres
  • 0,5x Audaphon Damping 10, 970 x 470 mm, adhesive
  • Binding Post PK28 I, gold plated (one pair, red and black)
  • 3m Speaker cable 2x2.5 mm2, transparent
  • Plan for DIY kit

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

  • Audaphon MKP CAP Superior 1.0 μF / 400 Vdc
  • Audaphon MKP CAP Superior 2.2 μF / 400 Vdc
  • Audaphon MKP CAP Superior 6.8 μF / 400 Vdc
  • Audaphon MKP CAP Superior 10 μF / 400 Vdc
  • Audaphon MKP CAP Superior 12 μF / 400 Vdc
  • Audaphon MKT CAP 47 μF / 160 Vdc
  • Audaphon MKT CAP 100 μF / 160 Vdc
  • Mundorf, electrolytic capacitor, etched, 180 μF/63 Vdc
  • Mundorf, electrolytic capacitor, etched, 330 μF/63 Vdc
  • Mundorf, electrolytic capacitor, etched, 470 μF/63 Vdc
  • 1.0 mm air core coil, 0.68 mH/0.39 Ohm
  • 1.0 mm air core coil, 1.0 mH/0.49 Ohm
  • 0.7 mm air core coil, 0.33 mH/0.48 Ohm
  • 0.7 mm air core coil, 0.47 mH/0.50 Ohm
  • Mundorf bs140 core coil 10 mH/0.38Ohm
  • Mundorf ferrite core coil P50 10 mH/3.49Ohm
  • Mundorf H core coil H71, 4.7 mH/0.46 0hm
  • Mundorf H core coil H71, 27 mH/1.68 0hm
  • Metal-oxide resistor, 10W 6.8 Ohm (blue-grey-gold)
  • Metal-oxide resistor, 10W 10 Ohm (brown-black-black)
  • Metal-oxide resistor, 5W 1.5 Ohm (brown-green-gold)
  • Metal-oxide resistor, 5W 2.2 Ohm (red-red-gold)
  • Metal-oxide resistor, 5W 22 Ohm (red-red-black)

Kit without cabinet, price per speaker   EUR 982,00 excl. VAT: € 825.21 / $ 899.48

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 Mundorf AMTU80W1.1 are of type polypropylen (MKP) Clarity-Cap CSA.

  • ClarityCap CSA capacitor 6.8 μF / 630 Vdc
  • ClarityCap CSA capacitor 10 μF / 250 Vdc
  • Mundorf MKP capacitor 47 μF / 250 V
  • Audaphon MKP CAP Superior 1.0 μF / 400 Vdc
  • Audaphon MKP CAP Superior 2.2 μF / 400 Vdc
  • Audaphon MKP CAP Superior 12 μF / 400 Vdc
  • Audaphon MKT CAP 100 μF / 160 Vdc
  • Mundorf, electrolytic capacitor, etched, 180 μF/63 Vdc
  • Mundorf, electrolytic capacitor, etched, 330 μF/63 Vdc
  • Mundorf, electrolytic capacitor, etched, 470 μF/63 Vdc
  • Mundorf Hepta Coil II45, 0.68 mH/0.34 Ohm
  • Mundorf Hepta Coil II45, 1.0 mH/0.42 Ohm
  • Mundorf baked varnish air core coil BL71, 0.33 mH/0.48 Ohm
  • Mundorf baked varnish air core coil BL71, 0.47 mH/0.57 Ohm
  • Mundorf baked varnish air core coil BL71, 10 mH/3.62 Ohm
  • Mundorf bs100 core coil 4.7 mH/0.46Ohm
  • Mundorf bs180 core coil 10 mH/0.23 Ohm
  • Mundorf ferrite core coil P50 10 mH/3.49Ohm
  • Mundorf H core baked varnish coil BH71, 27 mH/1.68 0hm
  • Mresist Classic 10 Ohm / 10 Watt
  • Metal-oxide resistor, 10W 6.8 Ohm (blue-grey-gold)
  • Metal-oxide resistor, 5W 1.5 Ohm (brown-green-gold)
  • Metal-oxide resistor, 5W 2.2 Ohm (red-red-gold)
  • Metal-oxide resistor, 5W 22 Ohm (red-red-black)

Kit with high-end-crossover without cabinet, price per speaker   EUR 1182,00 excl. VAT: € 993.28 / $ 1082.67

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).

  • Jantzen Cross Cap MKP capacitor 3.3 μF / 400V
  • Jantzen Cross Cap MKP capacitor 39 μF / 400V
  • 0.7 mm air core coil, 0.68 mH/0.70 Ohm
  • 0.7 mm air core coil, 0.05 mH
  • ceramic resistor 5.6 Ohm/20 Watt
  • ceramic resistor 8.2 Ohm/20 Watt

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 29,50 excl. VAT: € 24.79 / $ 27.02

universal PCB

For one speaker you need 1 pc. of RA240 and 1 pc. of RA160 pcb.

If you prefer to mount the crossover components on a 159 x 127 mm universal PCB instead on wood:
Universal PCB RA160, order no.. str-RA160, price per unit:   EUR 5,90 excl. VAT: € 4.96 / $ 5.40
Universal PCB RA240, order no.. str-RA240, price per unit:   EUR 8,60 excl. VAT: € 7.23 / $ 7.88
We recommend one board (each) per kit (two boards (each) for a speaker pair)


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