Absolute majority of acoustical mode in life systems /AS/ are designing on base of long ago proposal technical designed: open and closed boxes (acoustical hard screens, phasoinvertor, designed of A.L.Turas, USA, 1930) loud speakers with heavy mobile system (A.Vilsher, USA, 1950), boxes with thick sound-not-penetrate walls or plastic boxes, that they are not providing a high quality of sound, especially in low part of specter, fitted in boxes resonators of Gelmgolts, filling of inside volume of box absorb of sound materials for dempfiring of oscillation & smoothing of frequency characteristic, crumbling into any frequency diapasons of play sound on a big number of stripes & using many stripe filters & another technical decisions that are sharp decreases very small electroacoustical efficiency (to 0,05%). This ways of investigation are blind alley.
We designed a new approach to design of sound system, that use in mode of life & another cases. We use of methodic, that use for design os musical instruments and received excellent resultants. All above-named technical decides we was reject turn down, that ineffective. We used a new design of boxes, bring a change in construction of loud speakers, that be increased electroacoustical efficiency and weight AS. Designed old theory AS we rejected.
A new theory of design of AS we prove practical. Designed AS "TSUNAMY" has a power 100 Wt (eff.). She has sensitivity 110 dB , m on standard loud speakers of diameter diffuser 15''. Sound is volume.
We designed a transistor (1 in amplifier of power) amplifier, works in class A in pushpul. Out-transformator absent. Loud speaker has two sound coil bobbin with 60 Om. Constant component of current is not influence on the load speaker. Frequency characteristic is flat from 0 Hz to 75 kHz.
Owing to the fact that AS "TSUNAMY" has high quality of sound, small weight, smart disain & reproduce of sound in diapason from 16 Hz to 20 kHz. Diffuser of loud speaker radiate all area a volume of room. Listeners gived high estimation quality of sound. In split on this we shall continue this interesting investigation. The first load speaker was invented by Americans Rise and Kellog in 1920 yard. This is very old device. In XXI age he probably improve and his electroacoustical efficiency necessary to increase to 10-30%.