>>the broadest spectrum be derived from the use of all three?<<
Are you looking for the broadest spectrum? Or, the flattest response over the audio spectrum?
Are you talking about at audio frequencies?
You can get flat signal response within the range of audibility with the use of copper. Silver has slightly less resistance, but you can overcome that with the use of thicker gauge copper. No one has ever proven that silver has a sonic signature. Never seen a study that shows people can identify a silver cable versus copper in a DBT or ABX as long as they are precisely level matched.
Are you looking for the broadest spectrum? Or, the flattest response over the audio spectrum?
Are you talking about at audio frequencies?
You can get flat signal response within the range of audibility with the use of copper. Silver has slightly less resistance, but you can overcome that with the use of thicker gauge copper. No one has ever proven that silver has a sonic signature. Never seen a study that shows people can identify a silver cable versus copper in a DBT or ABX as long as they are precisely level matched.