55 plus is a two way compact speaker (sound bar).
55 plus is a closed-cabinet loudspeaker with drivers of Visaton .
The kit is delivered with the following drivers:
- Two fullrange speaker Visaton FRS 5 X, 8 Ohm
- a Visaton W 130 X, 2x 4 Ohm woofer
The loudspeaker has been developed by Thomas Schmidt and Holger Barske.
The crossover consists of:
- a 2nd order high-pass filter (12 dB per octave slope) for the full range driver.
- a 2nd order low-pass filter (12 dB per octave slope) for the woofer.
The frequency response of this speaker is mostly linear.
The decay spectrum is nearly perfect.
At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 1% above 300 Hz and doesn't exceed 1,4% at 95 dB at 1 m between 300 and 15000 Hz.
the crossover components (right),
to be mounted on a small wooden board.
Kit without cabinet, price per speaker EUR 214,00 excl. VAT: € 179.83 / $ 214.00
The in the Klang + Ton magazine presented amplifier is not included in the kit.
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 Visaton FRS 5 X, 8 Ohm are of type polypropylen (MKP) Audaphon 400 V.
Kit with high-end-crossover without cabinet, price per speaker EUR 253,00 excl. VAT: € 212.61 / $ 253.00
If you prefer to mount the crossover components on a 140 x 102 mm universal PCB instead on wood:
Universal PCB RA140, order no.. str-RA140, price per unit: EUR 4,20 excl. VAT: € 3.53 / $ 4.20
We recommend one board per kit (two boards for a speaker pair)