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November 3, 2018 - 4:22pm
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I think you want at least 80 watts per channel.
Thanks for your input Commsysman, I would concur as I have been told that although the are officially 6ohms, they in fact go down to as low as 3 ohms. So I guess they draw a lot of power! The Arcam Alpha 10 is 100 watts into 8 ohms, so should be enough on paper!
anyone got thoughts on how the Marantz PM6005 would compare in terms of overall quality to the Arcam Alpha 10 (new budget vs old higher-end classic)? Thanks again :-)
According to John Atkinson measurements the electrical phase angle is generally mild, but the combination of 5.3 ohms and –41 phase angle at 135Hz, a frequency where music often has high energy, will make the speaker work at its best with a good, 4 ohm–rated amplifier. Amplifiers that can deal with the demands of a difficult to drive loudspeaker start with relatively massive power supplies which will allow for high storage capacity. Ideally, the stored current component can be delivered over relatively long periods of time (a few seconds typically). Once the storage capacity has been expended, it is up to the power supply to "restock" itself. Here, large, massive power supplies can be detrimental to good sound quality. In other words, it doesn't matter whether the amplifier is rated at 10 watts or 100 watts because audio amplifiers are not tested into real world impedance loads. Audio amplifiers are modulated power supplies. The better the power supply, the better the chances one of the two amps will perform better into difficult loads.
Hope this helps