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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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In Reply to: Faraday's law sez you're increasing the wrong rating posted by jcox on June 21, 2004 at 19:16:41:
You said "... whether any of that translates to improved sound is another question".Well yes, except that all I did was to post my listening experience after making one simple change - ie. using a transformer which has a larger VA rating (and whose secondaries therefore use thicker wires than a 30VA transformer) improves the sound.
Why, I don't know ... I was hoping for some knowledgable input from someone like yourself who could give me a 'scientific' or 'technical' reason for this improvement in the sound.
Now, you said:
* "Magnetic flux in the core is determined by the input voltage, frequency, # turns and core area." AND
* "Transformer manufacturers have no incentive to ship a gram more iron or copper than just meets minimum specs."
These were the reasons why it made sense to me to use a core which has been specced to take 2 x 5amp secondary currents instead of one that was specced to only take 2 x 1amp currents.
There is so much more metal in the 160VA cores that the small current draw from my crossover power supply is much further away from the core saturation point than with the 30VA transformer.
Plus, the wire used for the secondaries is much thicker in the 160VA transformers, so the resistance will be much lower than the secondaries in the 30VA tranformers.
BTW, I am in Oz, where mains power is already 240v.
Regards,
Andy
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Follow Ups
- Thanks, jcox, for your input ... - andyr 19:44:07 06/21/04 (0)
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