Golf ball with soft core

A golf ball, comprising:

• a solid core, and
• an outer cover layer having a Shore D hardness of at least 58,
• the ball having a mechanical impedance with a primary minimum value in the frequency range of 3100 Hz or less after the ball has been maintained at 21.1.degree. C., 1 atm. and about 50% relative humidity for at least 15 hours.

A golf ball, comprising:

• a solid core having a PGA compression of 55 or less, and
• an outer cover layer with a Shore D hardness of at least 58,
• the ball having a mechanical impedance with a primary minimum value in the frequency range of 3100 Hz or less after the ball has been maintained at 21.1.degree. C., 1 atm. and about 50% relative humidity for at least 15 hours.

A golf ball, comprising:

• a core, and
• an outer cover layer having a Shore D hardness of at least 58,
• the ball having a mechanical impedance with a primary minimum value in the frequency range of 2600 Hz or less after the ball has been maintained at 21.1.degree. C., 1 atm. and about 50% relative humidity for at least 15 hours.

A golf ball, comprising:

• a core having a PGA compression of 55 or less, and
• an outer cover layer with a Shore D hardness of at least 58,
• the ball having a mechanical impedance with a primary minimum value in the frequency range of 2600 Hz or less after the ball has been maintained at 21.1.degree. C., 1 atm. and about 50% relative humidity for at least 15 hours.