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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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In Reply to: Re: No such thing.... posted by Matts_ on March 1, 2007 at 10:55:09:
It was common to rate speakers according to how many dB they produced at 1 meter when powered with one watt.Now if the speaker is called an 8 ohm speaker and we feed it 2.83 volts that is the same because [2.83(2.83)]/8 ohms is one watt. But some dishonest speaker guys decided to pull a fast one and use 2.83 volts instead of one watt to power the speaker. As pointed out that is the same for an 8 ohm speaker. But if will send 2.83 volts to a 4 ohm speaker we are feeding it 2 watts and it makes the speaker appear to be more efficient than it is.
So for that reason when the spec is given in dB/meter with one watt it is called efficiency but it is called sensitivity when we use 2.83 volts as the input instead of one watt.
IMHO one watt should always be used. But given that a good quality solid state amp will double its wattage into half the load it is accepted. Just think how efficient 2 ohms speakers would look!
Russ
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- Actually - Russ57 11:44:19 03/01/07 (0)
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