Below are the default settings I found between the original P1 and the 3 built-in modes on my Genie 2 setup:
Default P1 (General VAC+ rationale): Noise reduction: 0dB in Simple, -5dB in Complex, Low OpenSound Transition help.
Speech In Noise: Noise reduction: 0dB in Simple, -7.5dB in Complex, Medium OpenSound Transition help, slightly higher gain than P1 default.
Lecture: Noise reduction -1.5dB in Simple, -7.5dB in Complex, Medium OpenSound Transition help, very similar gain compared to Speech in Noise, which is slightly higher gain than P1 default.
Comfort: Noise reduction: -1.5dB in Simple, -7.5dB in Complex, Low OpenSound Transition help, slightly lower gain than P1 default.
I find it interesting that while the Lecture and Speech in Noise settings is virtually the same, but Speech in Noise noise reduction in Simple is 0dB while this setting in Lecture is -1.5dB. I would have thought it should be the reverse. Oh well.
The other interesting thing to observe is that even though mine is an OPN 1, the Speech in Noise built-in program has noise reduction of only 0dB in Simple, instead of the max of -3.5dB, and noise reduction in Complex of only -7.5dB instead of the max possible value of -9dB. I would have thought that they should have assigned the max noise reduction setting values in both Simple and Complex for Speech in Noise. I would have also thought that the OpenSound Transition help should have been set to High instead of just Medium.
I also find it interesting that the default P1 setting has 0dB in Simple and -5dB in Complex noise reduction, with Low OpenSound transition help. But I assume that they just want to start out with non-aggressive settings to begin with, and let the provider adjust them more aggressively as needed.
But then I think it’s a crime to make users pay an arm and a leg for the OPN 1 (vs the 2 or the 3), and then give the default setting of just -5dB for Complex noise reduction, which is the equivalent of the max noise reduction for the OPN 3 only. If users pay an arm and a leg for the -9dB max noise reduction for the OPN 1, then why set the default to just the equivalent of the OPN 3? Makes no sense to me.
I just changed all my built-in programs including the P1 (except for the Music program) to the max noise reduction of -3dB in Simple and -9dB in Complex. As for OpenSound transition help, I set my P1 to medium, the Comfort program to Low, and the Speech in Noise program to High. I don’t use the Lecture program. My Music program does not have any noise reduction, naturally.
I also have Speech Rescue enabled for P1, Comfort and Speech in Noise.
With the changes I made above, I find that if I decrease the volume in P1 by a notch or two, it virtually sounds the same as the Comfort setting. If I increase the volume in P1 by a notch or two, it virtually sounds the same as the Speech in Noise setting. So for the most part, I just use P1 and adjust its volume accordingly as needed and don’t bother with the Speech in Noise and Comfort program anymore.
I use the Music program when I’m at a concert of some sort. Otherwise, for normal music from watching TV, I don’t even bother with the Music program and I just use the P1 General VAC+ for that.