Cube 8BB4 stands for 8 inch woofer and 4 inch fullrange driver (the German word for fullrange is BreitBand, therefor BB). Both are in a cubic cabinet: a 2 way bassreflex loudspeaker with Omnes Audio fullrange BB 4.01 and woofer Omnes Audio Exclusive 8. Cube 8BB4 has been developed by Blue Planet Acoustic.
The crossover consists of a 3rd order high-pass filter (18 dB per octave slope) for the fullrange speaker and a 2nd order low-pass filter for the woofer. A RLC resonant circuit in series to the fullrange loudspeaker eliminates unwanted resonances.
The frequency response of this speaker is linear (except for higher frequencies, like it is typical for fullrange loudspeakers). The decay spectrum is nearly perfect. At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are lower than 0.2% between 500 and 10 000 Hz and rises not over 0.5% at 95 dB at 1 m .
the crossover components (right),
to be mounted on a small wooden board.
Kit without cabinet, price per speaker - not available
Kit with high-end-crossover without cabinet, price per speaker - not available
If you prefer to mount the crossover components on a 240 x 165 mm universal PCB instead on wood:
Universal PCB RA240, order no.. I-2767, price per unit: EUR 7,60 excl. VAT: € 6.39 / $ 7.22
We recommend one plate for one kit (for a pair of speakers you need 2 plates)