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RE: Harsh vocals in Magnepan 3.7i

Ah, yes. Don't over-complicate it.

Think about just the difference in impedance loads between the two speakers at the low frequencies you're talking about.
Remember, I've made the assumption the volume control of the A21 amp is at the same position in either case.

Obviously both speakers will sound somewhat different (obviously, because they're different speakers) but we're only talking about consumed power here.

Stated another way. Suppose we play the 3.7 and note the midrange SPL levels. We then disconnect and hookup the 1.7 without changing our system volume control. We note the same midrange SPL levels in either case.
The 3.7 was obviously making more level in the bass when it played. But did the amplifier have to supply more power to achieve that? Think about that a bit. :)

Dave.


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