Hi Frank,
Something seems not right. The output stage of many (most?) computer
sound cards is usually also used to drive headphones, and typically
provide at least a volt, which is approximately line level for consumer
devices, and output Z is usually fairly low (<500 ohms). In the audio
world, inputs are, by convention, high impedance (>10K). Did the radio
designer screw up and stick a low value resistor across the line input?
My general advice is to run the computer sound card about 6 dB below
clip, because it is common for distortion to rise by 10 dB with that 6
dB difference in output level. How much drive does that rear panel Line
In need?
73, Jim K9YC
On 12/5/2017 5:50 PM, [email protected] wrote:
I have the same problem with inadequate audio from my sound card
when I use the rear panel Line In connector. But it works great if
I use the front panel microphone connector.
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