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Post by SNR&THD on Feb 5, 2020 21:35:31 GMT
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Deleted
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Post by Deleted on Feb 5, 2020 23:55:14 GMT
That’s a nice and clear explanation, I’m interested to know how current requirements of a speaker fit into this?
Also, isn’t it true that a speakers impedance varies across the frequency range, so sensitivity requirements can only be used as a rough guide and certain loudspeakers can be very demanding in certain areas (e.g. electrostatics in the high treble region)?
As always, a demo is definitely preferable to test ones hypothesis of whether a given amplifier will successfully power a loudspeaker system, based on ones requirements.
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Post by SNR&THD on Feb 6, 2020 12:11:08 GMT
Speaker impedance will dictate how much power a speaker will dissipate.
At any given set voltage a 4-ohm speaker will make double the power of an 8-ohm speaker.
Most amplifiers give rating for both 8 and 4-ohm loads. Usually the 4-ohm rating is double that of 8, but not always.
Yes speaker impedance varies over frequency range, but the better the speaker the less it will vary.
The higher the damping factor of the amp the easier it is for it to drive lower impedances.
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