Cumulus Tower is a three way floorstanding speaker.
Cumulus Tower is a bass-reflex cabinet loudspeaker with drivers of Omnes Audio .
The kit is delivered with the following drivers:
- an Omnes Audio CX 3.1 coaxial driver
- an Omnes Audio W8 Alu, silver woofer
The loudspeaker has been developed by Nick Baur and Bernd Timmermanns.
The crossover consists of:
- a 3rd order high-pass filter (18 dB per octave slope) for the tweeter.
- a band pass consisting of a 2nd order high pass filter (12 dB per octave slope) and a 2nd order low-pass filter (12 dB per octave slope) for the mids-woofer.
- a 2nd order low-pass filter (12 dB per octave slope) for the woofer.
The frequency response of this speaker is nearly linear.
The decay spectrum as shown in the waterfall diagram is exemplary, free of any disturbing resonance.
At medium volume, i.e. 90 dB at 1 m, the nonlinear distortions are below 0.4% above 200 Hz.
the crossover components (right),
to be mounted on a small wooden board.
Kit without cabinet, price per speaker - not available
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 coaxial driver are of type polypropylen (MKP) Clarity-Cap PWA et Claity Cap ESA.
Kit with high-end-crossover without cabinet, price per speaker - not available
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 / $ 4.76
We recommend one board per kit (two boards for a speaker pair)
Hobby HiFi Overview