When you are listening to the BassBoxes you are listening to four flutes, but the way these are used is very special. The sounds in the them are generated by the forcefull movements of the internal speaker, created by low frequencies from 0.2 Hz. up to 20 Hz. fed into the speaker.
To make and modify these ultra-low frequencies we designed a special low-freq. synthesizer and amplifier, the Pulsor.
With the Pulsor we create and amplify the low-frequency signal which drive the internal speaker in each BassBox. As we have two BassBoxes, the Pulsor is equiped with two outputs (left, right) and the functions are designed double. Every part is built around two oscillators (LFO) which can operate independently, but can also be interconnected. The result can be panned between the left and right outlet. See the picture of the playing table:
The numbers refer to the different oscillators.
Next to the frequency-slider are the ratio-knobs located.
With this knob the turning point of the wave is regulated, this setting is also equipped with midi.
When the knob is turned left, the turning point is in the beginning of the wave: ,
when the knob is turned right, the turning point is in the end of the wave: ,
when the knob is turned halfway, the turning point is in the middle of the wave: .
The pictures are given for a triangle-wave, but the Pulsor can create a triangle-wave as well as a square wave . These signals can be combined in every proportion, the loudness of each is regulated by the sliders at the side of the playing table.
The signals of oscillator 1 and 2 are added together and panned to the left or right amplifier according to the level of the upper horizontal slider:
Oscillators 3 and 4 are regulated by the lower slider.
timed actions with oscillator 2 complex truplets with oscillator 4
a midi-out and midi-in which makes it possible to monitor and record the playing of the performer, and to play the BassBoxes using midi. the signals of the upper and lower oscillators as ordinary audio output on the two cinch-outs in the middle. This makes it possible to process this ultra-low frequencies in external processors two external audio-in, two jacks in which you can feed audio signals to the left or right amplifier. Here the processed signals can be fed back into the system. and of course the amplifier output which can be fed into the BassBoxes to drive the internal speakers.