Ok, now onto ADC/AC97. This is hard to explain as you need to now a little about the AC97 codec (which can be a little different for different card models), but I will try to explain.
For most card models, it works something like this (this is all inside the AC97 codec):
The AC97 page of kxmixer, as well as ADC, control the AC97 codec.
You can enable any AC97 source(s) to be sent to the AC97 Mixer (parrt of the AC97 codec). This is what the sliders and mute buttons at the bottom of the AC97 page of kxmixer, and the sliders and enable buttons on the right side of the ProFx:ADC plugin do. On most card models, the AC97 mixer is fed to the analog front speakers, so anything sent to the AC97 mixer will be heard in the front speakers (i.e. monitoring via the AC97 codec itself). Many drivers actually use this as the playback slider(s) in the Windows Mixer (which are separate from the recording section of Windows Mixer (i.e. you can record with the playback slider muted)). So if you are familiar with other drivers, you can sort of think of those sliders and buttons as the playback section (for AC97 sources) of the Windows Mixer.
You can also choose a Record source within the AC97 codec. This is the AC97 source selection combo-box that you see on the AC97 page of kxmixer, and the combo-boxes that you see on the left side of the ADC plugin. The source can be any AC97 source (Line In, Mic, etc), or the AC97 mixer itself (when the source is set to Stereo Mix or Mono Mix, the AC97 mixer is the source). Again, with other drivers this would be the Record section of Windows mixer (where you select a source, and can adjust its volume (except Windows Mixer usually has separate volume controls for each source, but it works the same way (controls the Recording Gain)).
So, the record source that is selected is separate from the AC97 Mixer, unless the AC97 mixer is chosen as the record source (in which case anything sent to the AC97 mixer will be recorded).
So, except for the case where the AC97 Mixer is the record source, the left and right halves of the ProFx:ADC window are separate (used for different purposes). One side is for recording, and the other for playback/monitoring.
The Mic boost option boosts the MIC, so it applies to both sides.
The pins on the ADC plugin are the AC97 record source (signal from) into the DSP, so that you can apply DSP effects to the signal before recording. You cannot do this on the playback/monitoring side (when monitroing via AC97) as it is direct to the speakers (thus you will not hear DSP effects when monitoring this way).
Here is a
picture of ADC for reference.
Again, this is a bit hard to explain... Hopefully I did not confuse you more.
This is how it works with most card models, although there does seem to be some models that do it a little differentley (I will not discuss those models as I am not completely sure of the inner workings of the codecs used on those models). I am prety sure that your model works like this, but you can test to be sure:
Save your config so that you can reload it whenever you want.
Clear the DSP.
Load ProFX:ADC and kxlt only.
Do not connect them (so there is no direct connection from ADC to the speakers in the DSP).
Lower the Line In volume slider (so it is not too loud) on the right side of ADC and enable Line In (on the right side), Play some audio though Line in and most likely you will hear it (adjust the volume slider as necessary) in the front speakers (even though there is no DSP connection from ADC to the speakers). Note that it does not matter which source is selected as the record source (on the left), you can still hear Line In and adjust its volume (i.e. monitor it via the AC97 codec).
Alternatively, if you disable the Line In slider on the right, select Line In as the Record source on the left, and connect ADC to the WinMM Recording connections of kxlt, you are able to record from Line In using Sound Recorder, etc (although you will not be able to hear it).
i.e. they are seperate in most cases...
The point is to show that you can monitor the signal via the AC97 codec, and if your intention is to monitor the signal via another means (via the DSP before recording or after recording), then you should disable that (otherwise you are hearing the signal at different points at the same time which is usually not what you would want to do (unless maybe you want to monitor the dry signal using headphones, and monitor it another way from one of the other speaker connections too)).
Does that make sense to you?
(Are you sorry that you asked?
)
More to come (when I have a chance)...