El Loco TQWT   Floorstanding as in Hobby Hifi 1/2022

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 85,5 dB
  • size (HxWxD): 1000 x 210 x 300 mm
  • frequency range (-8dB): 38 - 30000 Hz
  • crossover frequency(s): 2600 Hz
  • speaker type:

El Loco TQWT is a two way floorstanding speaker.

El Loco TQWT is a Tapered Quarter Wave Tube loudspeaker with drivers of Omnes Audio .

The kit is delivered with the following drivers:
- a Omnes Audio AMT 50 air motion transformer (ribbon-tweeter)
- a Omnes Audio MW 6B 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 2nd order low-pass filter (12 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 medium volume, i.e. 90 dB at 1 m, the nonlinear distortions are below 0,8% above 100 Hz.

Our kit consists of

  • Omnes Audio MW 6B
  • Omnes Audio AMT 50
  • Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 0,5x PE sealing tape, 5x2 mm, 7.5 m
  • 0,5x Damping Sonofil 100 x 35 cm for 20 litres
  • Binding Post PK31, gold plated (one pair, red and black)
  • 2m Speaker cable 2x1.5 mm2, transparent
  • 1,5x Pan screws 4x20 black, torx, 8 pieces
  • Plan for DIY kit

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

  • Audaphon MKT CAP 6.8 μF / 160 Vdc
  • Audaphon MKT CAP 10 μF / 160 Vdc
  • JB, electrolytic capacitor, bipolar advanced, 6.8 μF / 50 Vdc
  • 0.7 mm air core coil, 0.33 mH/0.48 Ohm
  • Mundorf ferrite core coil P100 2.2 mH/0.49Ohm
  • Metal-oxide resistor, 5W 3.3 Ohm (orange-orange-gold)

Kit without cabinet, price per speaker   EUR 135,00 excl. VAT: € 113.45 / $ 113.45

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 Omnes Audio AMT 50 are of type polypropylen (MKP) Audaphon MKP CAP Superior / 400V.

  • 2x Audaphon MKP CAP Superior 6.8 μF / 400 Vdc
  • Audaphon MKP CAP Superior 10 μF / 400 Vdc
  • Mundorf baked varnish air core coil BL71, 0.33 mH/0.48 Ohm
  • Mundorf baked varnish ferrite core coil BP100 2.2 mH/0.49Ohm
  • Metal-oxide resistor, 5W 3.3 Ohm (orange-orange-gold)

Kit with high-end-crossover without cabinet, price per speaker   EUR 158,00 excl. VAT: € 132.77 / $ 132.77

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, 22μF / 50 Vdc
  • 0.7 mm air core coil, 0.82 mH/0.89 Ohm
  • ceramic resistor 10 Ohm/20 Watt

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 13,10 excl. VAT: € 11.01 / $ 11.01

universal PCB

If you prefer to mount the crossover components on a 140 x 102 mm universal PCB instead on wood:
Universal PCB RA140, order no.. str-RA140, price per unit:   EUR 4,20 excl. VAT: € 3.53 / $ 3.53
We recommend one board per kit (two boards for a speaker pair)


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