Usual values for RS are 330 S to 1 kS and for CC are 4.7 µF to47 µF in consumer and musical instrument equipment, oftenspecified to drive a 10 kS minimum load. In Semi-Pro Audio Equipment, often specified to drive a 600 S minimum load, RS isusually 47 S to 220 S and CC is 47 µF to 220 µF.

The inherent weakness of unbalanced interconnections is that theshield, which is also a signal conductor, is a path for power linerelated currents that always flow between equipment grounds. Thevoltage drop across the resistance of the shield and connectors addsdirectly to the signal, producing the familiar hum and buzz.

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