My '79 JMP came stock with 6550 for the American Market. The impedance (or resistance to current flow) is important and used to calculate the maximum short circuit current. This impedance is the combined influence of M and LS.
ratio) the impedance across the output ends is 4 times larger than the impedance across the center tap to one end.
_ 6550 output transformer impedanceĦ550 output transformer impedance Output Transformers Impedance ratio Undistorted power 30 cps to 15 kc 20 CPS to 20 kc Minimum fre- quency response.
