Charles & Sandra Cohen
My club has an IC-7000. I once did some on-air monitoring of the transmitted signal, using my FT-817 with a 1" antenna. I don't know if the mic is "Japanee" or "Chinese", but it is whatever came with the rig.
I was surprised that any attempt to lower the high-frequency edge of the TX passband (2.9 kHz, in WIDE, if I remember right), resulted in _awful_ audio. Really distorted, independent of compression setting and mic gain. I suspect there's something wrong with the DSP firmware.
Raising the low-frequency edge (100 Hz in WIDE) -- that worked fine! Setting it to 300 Hz gets rid of much of the voice's low-frequency power, which is wasted on vowel sounds. The voice becomes treble-heavy, but it's not distorted, and readability is improved. It's not as good as an HC-4 element for contesting, but it's nothing to be ashamed of.
So I concur with the advice from Alan / AB6C:
. . . Use his suggested settings for TX bandwidth.
I prefer to do my own settings of COMP and MIC GAIN; but Alan's are probably a good start.
. Charles / VA7CPC