Rob... magic! I hadn't noticed that gain value before, but then I don't use alsamixer often.
That confirms my experimentation - 100% master is gain 0, and 74% PCM is gain 0. I've seen '74%' bandied about on forums before, this puts a rubber stamp on it :-)
Now to see if there's a way to configure ALSA to put some sort of loading/offset on the PCM mixer so 74% is the maximum...
Cheers Neil
Rob Page wrote:
Hi Neil
Is there a setting somewhere in the (ALSA) driver to set the maximum output to 'line level' so I can set kmix at 100% and get good volume and no distortion?
Semi-recently in alsamixer (alsamixer v1.0.14 is what i'm using at the moment), I noticed a dB gain read out at the top, adjust this to 0 and good volume with no (extra(!)) distortion. My current card, is a built-in realtek alc888, and 100% is gain 0.00, however on a previous card (which i removed because of driver issues) it was something like 84%.
Rob.
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