The Micro-Block is a compact loudspeaker with extremely well-behaved sound dispersion and other very good sonic properties at a low price. Bernd Timmermanns has developed this bass reflex speaker. The Micro-Block is home to a Wavecor dome, the TW030WA12, and the subwoofer SW118WA02.
We warmly recommend this loudspeaker.
Its crossover consists of a low-pass and a high-pass branch each of second order, i.e. with a slope of 18 dB per octave. A resistor sits in series to the tweeter as a voltage divider. To give a slight lifting to the highest treble, a capacitor is wired parallel to that resistor. No components were needed for eliminating any resonances or bulges in the frequency response.
We see a very even on-axis frequency response from 30 Hz to 30,000 Hz. The decay spectrum (waterfall diagram over frequency) is exemplary, free of any disturbing resonance. At 90 dB and 1 m, non-linear distortions remain below 0.4 % almost everywhere above 200 Hz.
Kit without cabinet, price per speaker
EUR 237,00 excl. VAT: € 199.16 / $ 217.08
The high-end kit contains Mundorf MCAP EVO capacitors of which 2 are Silver Gold Oil capacitors. The coils are a Mundorf Hepta coil and a baked varnish coil for diminishing the microphonics effect. Current flowing through the coil creates a magnetic field which on itself sets the reel of wire in motion. That motion induces a voltage in the coil which adds itself to the original signal.
Kit with high-end-crossover without cabinet, price per speaker
EUR 390,00 excl. VAT: € 327.73 / $ 357.23
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.
If you prefer to mount the crossover components on a 159 x 127 mm universal PCB instead on wood:
Universal PCB RA160, order no.. I-2766, price per unit:
EUR 5,10 excl. VAT: € 4.29 / $ 4.67
We recommend one board per kit (two boards for a speaker pair)
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