Connect a 5.6K Ohm resistor between pin 6 and the ring of the CM-500 and a 1 uF capacitor between the tip of the CM-500 and pin 1 or simply *disconnect* pin 6 and use bias for the K3 front mic jack. Tip and ring are connected together in the CM-500.
There is a 10 uF capacitor from pin 6 to ground (in the DSP power supply). That effectively shunts *any* audio to ground <G>. You must use the 5K6 Ohm resistor to prevent this loss of mic audio. 73, ... Joe, W4TV On 2014-08-31 3:45 AM, ayoshida wrote:
If CM-500 is connected to rear panel mic jack it works fine, however if it is connected to front panel mic jack via conversion connector I have a very low mic lebel with max mic level setting. If CM-500 is connected to KX3 it works fine. CM-500 mic plug to 8p plug connection in conversion connector is like this..... tip to pin-1 ring to pin 6 (K3 provides 8V regardless Bias ON/OFF) sleeve to pin 7 I have another electret condenser hand mic. If this mic is connected to K3 front panel mic jack it works fine. If CM-500 is connected to K2 (where 5V is provided to pin 6 of mic jack) using same conversion connector it works fine. Any suggestions please.
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