DD (standing for dynamic duo) is a 3 way floorstanding loudspeaker with closed bassrange system that employs two woofers Visaton W250 S, 8 Ohm. On top is a satellit cabinet with tweeter Visaton G 25 FFL and mid-woofer Visaton W 170S.
DD has been developed by Holger Barske and Thomas Schmidt.
The crossover consists of a 3rd order high-pass filter (18 dB per octave slope) for the tweeter, a bandpass filter (12 dB high - and 12 dB lowpass) for the mid-woofer. The two woofers are connected to a 2nd order low-pass filter.
Between 80 Hz and 20000 Hz, the frequency response of this loudspeaker is linear on axis, with a loudness sounding. The decay spectrum is nearly perfect except a resonance at 1200 Hz. At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are lower than 1% above 200 Hz and below 2% at 95 dB at 1 m .
Kit without cabinet, price per speaker EUR 562,00 excl. VAT: € 472.27 / $ 486.44
The high-end kit comes with ClarityCap PX capacitors for the tweeter. The important inductances are baked varnish air core coil 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.
Kit without cabinet, price per speaker EUR 614,00 excl. VAT: € 515.97 / $ 531.45
If you prefer to mount the crossover components on a 240 x 165 mm universal PCB instead on wood: Universal PCB RA240, order no.. str-RA240, price per unit: EUR 8,60 excl. VAT: € 7.23 / $ 7.44 We recommend one plate for one kit (for a pair of speakers you need 2 plates)
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