If you are talking about dynamic range I suggest you look at the DR Database website. Some CDs have DR that matches the LP of the same recording, sometimes it's the other way around. Some recording have limited DR regardless of the format.
Generally a radio broadcast is not high fidelity in many or most areas of sound quality including dynamics.
BTW the bit about using the speakers as they were intended is BS. Use them for what you like. But if they are dynamic speakers then a limited dynamics source won't push then to their highest capabilities.
BTW the bit about using the speakers as they were intended is BS. Use them for what you like. But if they are dynamic speakers then a limited dynamics source won't push then to their highest capabilities.