The Cizek Model One
This product was important because it was the first loudspeaker system which, due to its particular crossover, showed a flat impedance curve (except for the resonance peak) with a consequent easier work for the amplifier and linear frequency response.
Another peculiarity of the Cizek One was a switch that permitted selection of the Q factor of the bass frequencies; thus, the listener could choose a more or less controlled bass depending on the kind of music or ambient acoustic characteristics. The Cizek Model One became the most successful product of the Company since 1976, first year of production.
Roy Cizek personally controlled all the "Model One" produced, so that they fell within the stringent standards set by him. Being blind, he could not see the measurement, but used a special trick: he placed both the index and middle fingers so that the needle readout instrument should touch his fingers, and so the margin of tolerance were established. If the needle touched the speaker was discarded.
In the next years Cizek Audio System produced another interesting system composed by 2 standard speakers systems with one (stereo) or two (momophonic) additional subwoofers (respectively the Cizek Model 3 + MG27 system and the Classic 20 system, composed of two satellites (KA1) plus one subwoofer (KA20); These two systems were considered between the better HIFI speaker system in the world in the reviews of the italian magazines Suono and Stereoplay.
- Cizek model one brochure
- Special crossover patent
- Italian review of the Cizek Model One on Stereoplay No 54, April 1978
- [Personal correspondence with Giancarlo Bonetti, italian dealer of Cizek speakers in 70'-80' years and personal friend]
- Review of the Cizek Classic 20, Suono No 113 June 1982
- Review of the Cizek Model 3 + MG 27, Stereoplay No 62, January 1979
- Review of the CD player Onkyo DX-7555 on Stereophile