428 



KENNELLY, TAYLOR— PROPERTIES OF 



the frequency of the distortion, the next test, indicated in Fig. 7, 

 showed that the distortion loop, central at 704 — ', had moved over 

 to the left hand side of the diameter OA, and had diminished to 



A minor absorption 

 circle at 7IZ^ is 



superimposed upon the 

 major absorption circle 



at 637.5^. 



Telephone FPeceivep B 

 Load a\ Center^LZgm. 



Fesistance "fo -3° -^° 



40 50 60 fo 



Fig. 8. Doubly Distorted Motional-Impedance Circle. 



about 17 ohms of departure CE, from the main circle. The central 

 ampHtudes of the diaphragm's vibration were again measured in 

 this case, and from them the inner circle of vibrational velocity 

 O abed was deduced. This also shows the distortion at c. The cor- 



