Inter-M PMU-120N - Manual (Page 15)

MIXING AMPLIFIER
13
PMU-60N/120N/240N
Warning : For high impedance systems, connect with matching transformer as the following Figure. Be
certain that the total impedance does not equal less than the rated impedance.
Please do not use a 4Ω and SP1~SP5 terminal at the same time.
Low Impedance (100V) (70V)
PMU-60N 4Ω 167Ω 83Ω
PMU-120N 4Ω 83Ω 42Ω
PMU-240N 4Ω 42Ω 21Ω