DayDream Mikro-TL   Shelf speaker as in Hobby Hifi 1/2024

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 82 dB
  • size (HxWxD): 492 x 138 x 224 mm
  • frequency range (-8dB): 50 - 22000 Hz
  • crossover frequency(s): Hz
  • speaker type: transmission line

DayDream Mikro-TL is a compact loudspeaker with a full range driver.

DayDream Mikro-TL is a transmission-line loudspeaker with drivers of Dayton Audio .

The kit is delivered with a Dayton Audio RS100-4 full range driver

The loudspeaker has been developed by Bernd Timmermanns.

The crossover consists of:
- a blocking circuit in series with the full range driver.

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 1,1% above 200 Hz.

An excerpt from the Hobby HiFi review

Conclusion of the magazine Hobby HiFi:

Our kit consists of

  • Dayton RS100-4
  • 0,5x Damping Sonofil 100 x 35 cm for 20 litres
  • Binding Post PK31, gold plated (one pair, red and black)
  • 1m Speaker cable 2x1.5 mm2, transparent
  • 1,5x 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 MKT CAP 2.2 μF / 160 Vdc
  • Audaphon MKT CAP 10 μF / 160 Vdc
  • 1.0 mm air core coil, 0.47 mH/0.32 Ohm
  • Metal-oxide resistor, 5W 3.3 Ohm (orange-orange-gold)

Kit without cabinet, price per speaker   EUR 77,00 excl. VAT: € 64.71 / $ 75.06

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 Dayton Audio RS100-4 are of type polypropylen (MKP) Audaphon MKP CAP Superior 400 V.

  • Audaphon MKP CAP Superior 12 μF / 400 Vdc
  • Mundorf baked varnish air core coil BL100, 0.47 mH/0.32 Ohm
  • Metal-oxide resistor, 5W 3.3 Ohm (orange-orange-gold)

Kit with high-end-crossover without cabinet, price per speaker   EUR 87,00 excl. VAT: € 73.11 / $ 84.81

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 / $ 4.09
We recommend one board per kit (two boards for a speaker pair)


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