WaveLine 120   Shelf speaker as in Hobby Hifi 1/2023

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 81 dB
  • size (HxWxD): 425 x 180 x 300 mm
  • frequency range (-8dB): 45 - 28000 Hz
  • crossover frequency(s): 2000 Hz
  • speaker type: transmission line

WaveLine 120 is a two way compact speaker.

WaveLine 120 is a transmission-line loudspeaker with drivers of Wavecor .

The kit is delivered with the following drivers:
- a Wavecor TW022WA10 tweeter
- a Wavecor WF120CU08 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 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 is nearly perfect.

At medium volume, i.e. 90 dB at 1 m, the nonlinear distortions are below 0,4% above 400 Hz.

An excerpt from the Hobby HiFi review

Conclusion of the magazine Hobby HiFi:

Our kit consists of

  • Wavecor silk dome tweeter TW022WA10
  • WF120CU08, Wavecor Mid/Woofer, 8 Ohm, paper / glass fiber, BD, phase plug
  • 0,5x Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 0,5x Damping Sonofil 100 x 35 cm for 20 litres
  • Binding Post PK31, gold plated (one pair, red and black)
  • 1,5m Speaker cable 2x1.5 mm2, transparent
  • Pan screws 3.5x17 black, torx, 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 8.2 μF / 400 Vdc
  • Audaphon MKP CAP Superior 12 μF / 400 Vdc
  • 1.0 mm air core coil, 0.47 mH/0.32 Ohm
  • 0.7 mm air core coil, 0.68 mH/0.70 Ohm
  • Mundorf H core coil H100, 2.7 mH/0.24 0hm
  • Metal-oxide resistor, 10W 6.8 Ohm (blue-grey-gold)
  • Metal-oxide resistor, 10W 15 Ohm (brown-green-black)

Kit without cabinet, price per speaker   EUR 346,00 excl. VAT: € 290.76 / $ 311.11

Price for a pair of custom speakers of any color   - 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 Wavecor TW022WA10 are of type polypropylen (MKP) Mundorf MCAP EVO Öl 450 V.

  • Mundorf MCAP EVO 12 μF / 450 V
  • Mundorf MCAP EVO Oil 2.7 μF / 450 V
  • Mundorf MCAP EVO Oil 8.2 μF / 450 V
  • Mundorf Hepta Coil II45, 0.47 mH/0.27 Ohm
  • Mundorf baked varnish air core coil BL71, 0.68 mH/0.71 Ohm
  • Mundorf bs100 core coil 2.7 mH/0.3Ohm
  • Mresist Classic 6,8 Ohm / 10 Watt
  • Mresist Classic 15 Ohm / 10 Watt

Kit with high-end-crossover without cabinet, price per speaker   EUR 446,00 excl. VAT: € 374.79 / $ 401.03

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).

  • JB, electrolytic capacitor, bipolar advanced, 33μF / 100 Vdc
  • 0.7 mm air core coil, 0.22 mH/0.34 Ohm
  • ceramic resistor 10 Ohm/20 Watt

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 10,10 excl. VAT: € 8.49 / $ 9.08

universal 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 / $ 5.31
We recommend one board per kit (two boards for a speaker pair)

Home   Hobby HiFi Overview