Frank Dresser wrote:

"Jon Noring" wrote in message
...

Well, being the "OP", I want a high-audio performance, modern design
AM tuner to integrate into my audio system -- and I believe a lot of
tube-o-philes likewise want that -- but not everyone obviously. There
are several reasons why most higher-grade audio systems use separate
components, the reasons of which are obvious to most everyone. The AM
tuner is no different than other audio components in this regard.

[snip]

But AM is different than other media. AM is processed to somewhat
compensate for the deficiencies in typical radios and listening situations.
AM sounds compressed and on a wideband radio usually sounds over treble
boosted. A perfect AM tuner would reproduce this processing perfectly.

A decompressor circuit might be worth considering.

But how does one know how to apply an expander to exactly match
the inverse of the compressor characteristic?
I doubt two wrongs will make a right.

Anyhow, in Oz there isn't to much evidence of compression or emphasis of
audio HF on the stations worth listening to; I find the better the receiver,
the more like FM reception the AM signal becomes.

Patrick Turner.



Frank Dresser