Re: 6ohms or 8ohms?
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Joined: Aug 2004
Posts: 6,379 Likes: 7
axiomite
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axiomite
Joined: Aug 2004
Posts: 6,379 Likes: 7 |
In a perfect world yes.... but last time I looked it wasn't perfect.
M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39 M5HP, M40ti, Sierra-1 LFR1100 active, ADA1500-4 and -8
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Re: 6ohms or 8ohms?
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
Joined: May 2002
Posts: 10,654 |
John, yes that is interesting and the handling of it doesn't appear to be consistent. My view would be that since 1 watt is a specific amount of power and 2.83 volts a specific voltage, that when Axiom uses 1 watt in its specs rather than 2.83 volts, it means exactly that. Therefore the spec would be an efficiency(rather than sensitivity) rating, e.g. the M80s would put out an SPL of 91dB at 1 meter with 1 watt of input. Since 1 acoustic watt at 1 meter is equivalent to about 112dB, 91dB at that distance would be an efficiency of just under 1%.
Since power equals volts(squared)divided by resistance, the two measurements would give the same dB number at 8ohms, i.e. 2.83 volts(squared)divided by 8ohms equals 1 watt. But 2.83 volts into 4ohms would give 2 watts. So, yes, if the spec is to be taken literally, the measurement into 4ohms is taken by turning the voltage down to 2 volts rather than 2.83, so that 1 watt of power is used.
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Enjoy the music, not the equipment.
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Re: 6ohms or 8ohms?
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Joined: Jun 2003
Posts: 6,833
axiomite
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axiomite
Joined: Jun 2003
Posts: 6,833 |
In reply to:
In a perfect world yes.... but last time I looked it wasn't perfect.
It's not?
So that would mean into a 6 ohm load the voltage required to deliver one watt would be cut down to 2.45 vs the 2.83 for the 8 ohm load.
Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
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