BeTi 4x4 is a 2,5 way floorstanding speaker.
BeTi 4x4 is a bass-reflex cabinet loudspeaker with Beryllium cone tweeter from Scan Speak and titanium cone woofer from Visaton.
The kit is delivered with the following drivers:
- a Scan Speak D3004/6040-10 tweeter
- two Visaton TI 100, 8 Ohm midrange / bass drivers
- two Visaton TI 100, 8 Ohm woofers
The loudspeaker has been developed by Bernd Timmermanns.
The crossover consists of:
- a 3rd order high-pass filter (18 dB per octave slope) for the tweeter.
- a 3rd order low-pass filter (18 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 perfectly linear.
The decay spectrum is perfect.
At medium volume, i.e. 90 dB at 1 m, the nonlinear distortions are below 0,35% above 300 Hz.
the crossover components (right),
to be mounted on a small wooden board.
Kit without cabinet, price per speaker EUR 1254,00 excl. VAT: € 1053.78 / $ 1201.31
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 Tweeter are of type polypropylen (MKP) Mundorf M-Cap Evo silver/gold/oil.
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 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 / $ 8.24
We recommend one board per kit (two boards for a speaker pair)