Audimax-TL 22.3   Floorstanding as in Hobby Hifi 4-5/2025

Technical data
  • impedance: 6 Ohm
  • sensivity (2,83V/1m): 84,5 dB
  • size (HxWxD): 1220 x 280 x 450 mm
  • frequency range (-8dB): 23 - 30000 Hz
  • crossover frequency(s): 150, 2000 Hz
  • speaker type: transmission line

Audimax-TL 22.3 is a three way floorstanding speaker.

Audimax-TL 22.3 is a transmission-line loudspeaker with drivers of Mundorf, Hobby-HiFi (SEAS) and Visaton.

The kit is delivered with the following drivers:
- a Mundorf AMTU110W1.1-R air motion transformer (ribbon-tweeter)
- a Hobby-HiFi 18MW12T (SEAS) mids driver
- a Visaton TIW 200 XS 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 2nd order low-pass filter (12 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 is perfect.

At medium volume, i.e. 90 dB at 1 m, the nonlinear distortions are below 0,4% above 100 Hz.

An excerpt from the Hobby HiFi review

Conclusion of the magazine Hobby HiFi:

Our kit consists of

  • Mundorf AMTU110W1.1-R
  • Hobby-HiFi woofer 18MW12T, produced by SEAS
  • Visaton woofer TIW 200 XS, 8 Ohm
  • Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 0,5x PE sealing tape, 5x2 mm, 7.5 m
  • 2x Damping Sonofil 100 x 35 cm for 20 litres
  • Audaphon Damping 10, 970 x 470 mm, adhesive
  • Binding Post PK31, gold plated (one pair, red and black)
  • 4m Speaker cable 2x2.5 mm2, transparent
  • 0,5x Visaton Countersunk screws 3.5x25, 8 pcs
  • 1,5x Allen wood screws, black, 4x25 mm, 8 pieces
  • Plan for DIY kit

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

  • Mundorf MKP capacitor 1.0 μF / 400 V
  • Mundorf MKP capacitor 4.7 μF / 400 V
  • Mundorf MKP capacitor 15 μF / 400 V
  • Audaphon MKP CAP Superior 1.5 μF / 400 Vdc
  • Audaphon MKT CAP 1.5 μF / 160 Vdc
  • Audaphon MKT CAP 5.6 μF / 160 Vdc
  • Audaphon MKT CAP 15 μF / 160 Vdc
  • Audaphon MKT CAP 68 μF / 160 Vdc
  • Mundorf, electrolytic capacitor, etched, 220 μF/63 Vdc
  • Mundorf, electrolytic capacitor, etched, 390 μF/63 Vdc
  • 1.0 mm air core coil, 2.7 mH/0.90 Ohm
  • 0.7 mm air core coil, 0.15 mH/0.28 Ohm
  • 2x 0.7 mm air core coil, 0.56 mH/0.64 Ohm
  • 0.7 mm air core coil, 6.8 mH/2.68 Ohm
  • 0.7 mm air core coil, 27 mH/6.44 Ohm
  • Mundorf bs140 core coil 10 mH/0.38Ohm
  • Metal-oxide resistor, 10W 2.2 Ohm (red-red-gold)
  • Metal-oxide resistor, 10W 4.7 Ohm (yellow-violet-gold)
  • Metal-oxide resistor, 10W 12 Ohm (brown-red-black)
  • Metal-oxide resistor, 5W 1.0 Ohm (brown-black-gold)
  • Metal-oxide resistor, 5W 8.2 Ohm (grey-red-gold)

Kit without cabinet, price per speaker   EUR 1329,00 excl. VAT: € 1116.81 / $ 1295.50

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 AMTU110W1.1-R are of type polypropylen (MKP) Mundorf Mcap Supreme EVO Öl.

  • Mundorf MCAP EVO 82 μF / 350 V
  • Mundorf Mcap Supreme EVO Oil 4,7 μF / 800V
  • Mundorf Mcap Supreme EVO Oil 15 μF / 800V
  • Mundorf MKP capacitor 1.0 μF / 400 V
  • 2x Audaphon MKP CAP Superior 1.5 μF / 400 Vdc
  • Audaphon MKP CAP Superior 5.6 μF / 400 Vdc
  • Mundorf, electrolytic capacitor, etched, 220 μF/63 Vdc
  • Mundorf, electrolytic capacitor, etched, 390 μF/63 Vdc
  • Mundorf Hepta Coil II45, 2.7 mH/0.76 Ohm
  • Mundorf baked varnish air core coil BL71, 0.15 mH/0.28 Ohm
  • 2x Mundorf baked varnish air core coil BL71, 0.56 mH/0.64 Ohm
  • Mundorf baked varnish air core coil BL71, 6.8 mH/2.68 Ohm
  • Mundorf baked varnish air core coil BL71, 27 mH/6.44 Ohm
  • Mundorf vs180 core coil 10 mH/0.23 Ohm
  • Mresist Classic 12 Ohm / 10 Watt
  • Mresist ultra 4,7 Ohm, 3/30Watt
  • Mresist Ultra cooling rod 6,5K/W + Accessories (Set 1)
  • Metal-oxide resistor, 10W 2.2 Ohm (red-red-gold)
  • Metal-oxide resistor, 5W 1.0 Ohm (brown-black-gold)
  • Metal-oxide resistor, 5W 8.2 Ohm (grey-red-gold)

Kit with high-end-crossover without cabinet, price per speaker   EUR 1687,00 excl. VAT: € 1417.65 / $ 1644.47

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).

  • Audaphon MKT CAP 47 μF / 160 Vdc
  • 0.7 mm air core coil, 0.18 mH/0.36 Ohm
  • ceramic resistor 8.2 Ohm/20 Watt

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 21,12 excl. VAT: € 17.75 / $ 20.59

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 / $ 5.75
Universal PCB RA240, order no.. str-RA240, price per unit:   EUR 8,60 excl. VAT: € 7.23 / $ 8.38
We recommend one board (each) per kit (two boards (each) for a speaker pair)


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