Hopefully not a daft question but which of the two speaker specifications listed below would be the easiest drive for a lowish power valve amp.
Speaker 1. Listed as Sensitivity 91dB / Impedence 4 ohm
Speaker 2. Listed as Sensitivity 88dB / Impedence 8 ohm
Speaker 1. Listed as Sensitivity 91dB / Impedence 4 ohm
Speaker 2. Listed as Sensitivity 88dB / Impedence 8 ohm