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Old 18th September 2005, 02:43 PM   #1
PMA is offline PMA  Europe
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Default Importance of "First Watt" ;)

There's a nice product called "First Watt" by NP and I agree that importance of low distortion especially for and even for very low power is usually underestimated. This is the reason why most AB amplifiers sound bad though measure good - when measured at higher power. I agree that the first watt is importatnt and I attach 20mW spectrum of my error correction amp (inspired by NP). Please forget the baseline curls, which are the soundcard problem. I would greatly appreciate to see similar measurement of the "FirstWatt" amplifier.
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Old 18th September 2005, 03:06 PM   #2
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20 mW is silent night listening , what do you can listen by this level ? Much more interesting are results by cca 1W, where NP " baby " show much more distortion than your amp....Don't doubt, which one is better ...
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Old 18th September 2005, 03:19 PM   #3
anli is offline anli  Russian Federation
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Quote:
Originally posted by Upupa Epops
20 mW is silent night listening , what do you can listen by this level ?
Sound decay and reverberations are examples of such levels.
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Old 18th September 2005, 03:31 PM   #4
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Which sound decay do you mean ?
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Old 18th September 2005, 03:32 PM   #5
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Sure, we do not listen to fix amplitude one sine tone , dynamic range of almost every music signal covers low levels as well.
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Old 18th September 2005, 03:40 PM   #6
anli is offline anli  Russian Federation
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Quote:
Originally posted by Upupa Epops
Which sound decay do you mean ?
I know, my english is ugly :-)

A sound's life has different stages. Roughly speaking, they are: attack-suspend-decay. With my new amp this life is noticeable longer :-)
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Old 18th September 2005, 04:38 PM   #7
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Anli:
The low distortion of the low level signales will be "killed" by the distortion of the main signals
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Old 18th September 2005, 04:43 PM   #8
mikeks is offline mikeks  United Kingdom
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Default Re: Importance of "First Watt" ;)

Quote:
Originally posted by PMA
....importance of low distortion especially for and even for very low power is usually underestimated....
True... ...

...which is why i prefer Class-AB to Self's so-called optimal Class-B...
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Old 18th September 2005, 05:23 PM   #9
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Hallo
Nice topic.
Pavel Dudek, you frequently raised this issue:
If 16-bit digital sound has 96dB of dynamic range (ratio to quantum noise), than if full amplitude translates to 100W, 20mW has only 60dB, right?
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Old 18th September 2005, 05:47 PM   #10
anli is offline anli  Russian Federation
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Quote:
Originally posted by ACD
Anli:
The low distortion of the low level signales will be "killed" by the distortion of the main signals
I'd say this way:

"The low level signals will be "killed" by the distortion of the main signals"
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