Re: Stereo receievers: THD of .04 vs. .08

"Eeyore" <rabbitsfriendsandrelations@[EMAIL PROTECTED]
> wrote in
message news:47859E7E.655330D2@[EMAIL PROTECTED]
> Arny Krueger wrote:
>
>> When techniques like these are utilized, it is often
>> found that SS amplifiers have negligable crossover
>> distortion.
>
> Pure nonsense. Crossover distortion remains the bete
> noire of conventional Class AB bipolar designs.

Please explain that in the context of the performance of this power 
amplifier:

http://www.pcavtech.com/pwramp/macrot-5000VZ/index.htm

For example,

http://www.pcavtech.com/pwramp/macrot-5000VZ/index.htm#DR_001S

represents the following test conditions.

(1) 1 KHz was applied to the amp, and levels were set so that 1 watt was 
delivered to an 8 ohm resistive load. This corresponds to FS in the
graphic.

(2) The dynamic range test signal was applied. This test signal is
composed 
of a 1 KHz tone at 60 dB below the signal used in step 1.

(3) The graphic shows a spectral analysis of the output of the power 
amplifier, referenced to the signals observed in step (1). We see the 
following:

(3a) 60 Hz hum with harmonics, none worse than about 95 dB below the 1
watt 
in step (1).

(3b) The 1 KHz test tone, 60 dB below the 1 watt in step (1)

(3c)  All harmonics 120 or more dB below the 1 watt in step (1).

Normally, crossover distortion produces a series of harmonics of the low 
level test signal. The test signal was about  85 dB below the amp's full 
rated power. There are simply no observable harmonics.

Is it possible to have crossover distortion that generates no harmonics of

such a low level test signal?