Sennheiser specs for the MM-HLSC-1's (mke40's) a minimum terminating impedance of 15K.
In the elec-wire PDF they specify a batterybox resistor of 8K2.
So how can this info be combined to truth if the batterybox resisor and line in impedance of the recorder must be seen as two resistors in parallel for the mic? ???
Dude the battery box resistor is not what determines input impedance of the battery box it just controls the bias voltage the capsule sees.
Chris Church
Quote from: udovdh on May 24, 2006, 02:21:25 PM
Sennheiser specs for the MM-HLSC-1's (mke40's) a minimum terminating impedance of 15K.
In the elec-wire PDF they specify a batterybox resistor of 8K2.
So how can this info be combined to truth if the batterybox resisor and line in impedance of the recorder must be seen as two resistors in parallel for the mic? ???
Quote from: Church-Audio on May 24, 2006, 10:18:51 PM
Dude the battery box resistor is not what determines input impedance of the battery box it just controls the bias voltage the capsule sees.
Yes indeed (for the bias), but several people around me say that both the impedance of the deck
and the batterybox resistor determine the impedance that the mic sees.
If that is so the situation is strange.