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Re: Here's some interesting stuff. . .
dllewel #148507 09/29/06 05:51 PM
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What does that mean agai... oh, never mind...





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Re: Here's some interesting stuff. . .
Ken.C #148508 09/29/06 09:00 PM
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Quote:

Did anyone else find Gene's explanation of power factor misleading ? PF is only one of the things which affect the amount of power you can get out of an outlet -- the other is amplifier efficiency. I thought Gene sort of implied that if you had a 90% power factor you could get 90% of the power potential of the outlet into your speakers, which AFAIK is not the case.

Power factor affects how much power you can get into the amplifier without overloading the house wiring; efficiency is how much of the power going into the amp makes it into the speakers rather than being dissipated as heat, noise, or the blazing light off that little LED in the corner




Actually my point about power factor is valid. The power factor of most amps is usually 70-80%. I was trying to convey that the power supply in the Axiom amp is better than most since it can actually deliver closer to the VA rating of the transformer.

This is of course separate from amp efficiency. As you can see this amp can basically dump its entire power supply into 1 channel - an industry first if I am not mistaken.

Cheers;
Gene DellaSala

Re: Here's some interesting stuff. . .
Audioholics #148509 09/29/06 09:15 PM
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It's not an industry first until they ship product.

Not that I don't expect them to, in fact, ship product with this feature.


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Re: Here's some interesting stuff. . .
Audioholics #148510 09/29/06 09:25 PM
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>>I was trying to convey that the power supply in the Axiom amp is better than most since it can actually deliver closer to the VA rating of the transformer.

Absolutely, or, as everyone now seems to say here, "AFL!!"

The more times I read your article the less sure I became about my interpretation. Oh well...

Anyways, it was a great article -- thanks !!


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Re: Here's some interesting stuff. . .
bridgman #148511 09/29/06 09:34 PM
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There was an article? I guess I was distracted by the pictures.

Re: Here's some interesting stuff. . .
pmbuko #148512 09/30/06 02:52 AM
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Yes, excellent article by Gene. I was actually more interested in reading about the anechoic chamber and microphone corrections that apparently will allow extending the accuracy of the measurements down to about 20Hz. Ian has reported here in the past that wedges of that size in the chamber only allow accurate anechoic measurements down to about 85Hz.


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Re: Here's some interesting stuff. . .
JohnK #148513 09/30/06 01:16 PM
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I read the article differently -- that the combination of chamber measurements and measurements on the pole allowed accurate readings down below 20 Hz...

Then again I was very tired when I read the article


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Re: Here's some interesting stuff. . .
bridgman #148514 09/30/06 02:58 PM
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Quote:

I read the article differently -- that the combination of chamber measurements and measurements on the pole allowed accurate readings down below 20 Hz...

Then again I was very tired when I read the article




Get some sleep and re-read

What Axiom does is measure subs outdoors on the pole, then they remeasure them in the chamber. They then create a correction curve so that the chamber results are accurate down to 20Hz within a dB or so to what they measured on the pole. Pretty cool stuff!

Last edited by Audioholics; 09/30/06 03:00 PM.
Re: Here's some interesting stuff. . .
dllewel #148515 09/30/06 03:22 PM
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The annual tour is always an interesting read. Thank you Sean.




Figured it was about time I contributed something to the forum besides a dumb joke!


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Re: Here's some interesting stuff. . .
SirQuack #148516 09/30/06 03:24 PM
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I wonder if they will ever manufacture an amp or monoblocks that poor guys like me can afford?




Whoa, no kidding. I must have missed the price the first read through. Maybe if I work overtime for a whole year. . .


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