Gensis Audio

Panning : -100/+100

=========================================

Cleanest Possible Sound:


Ladder Effect Depth = 0

YM2612 High Quality Audio Mode = checked

No LPF

YML = 100
YMR = 100
Square 1 = 32
Square 2 = 32
Square 3 = 32
Square 4 = 29

==========================================

Clear 2612 Audio:


Ladder Effect Depth = 3

YM2612 High Quality Audio Mode = unchecked

LPF turned off

YML = 100
YMR = 100
Square 1 = 32
Square 2 = 32
Square 3 = 32
Square 4 = 29

========================================

Clean 3438 Audio:

Ladder Effect Depth = 0

YM2612 High Quality Audio Mode = unchecked

No LPF

YML = 100
YMR = 100
Square 1 = 32
Square 2 = 32
Square 3 = 32
Square 4 = 29

=========================================


Pre VA7 Genesis Model 1:

These consoles sport a YM2612 for FM audio and require the ladder effect to sound right. At this
point, it is not currently possible to 100% accurately simulate the characteristics of the low-pass
filter in these revisions due to how the Mega SG low-pass filter currently behaves. So here's the closest
we can get under the current limitations of the Mega Sg's low-pass filter:

Ladder Effect Depth = 3

YM2612 High Quality Audio Mode = unchecked


LPF settings:

Cutoff Frequency = 3400

Rolloff Rate = 15

Check all filtering boxes
  

Channel Volume Settings:

YML = 100
YMR = 100
Square 1 = 32
Square 2 = 32
Square 3 = 32
Square 4 = 29

=======================================

M1 Va7 & M2:

With the exception of two revisions of the Genesis model 2, all Genesis revisions since the VA7
Genesis model 1 replace the YM2612 with a YM3438, which lacks the ladder effect. The low-pass
filter has been modified as well to add an extra filter stage to the FM output. It cannot be 100%
accurately replicated, but we can do a rough approximation using the Mega SG’s current low-pass filter. 
This approximation is based on the filter setup found on the VA3 Genesis model 2.


Ladder Effect Depth = 0

YM2612 High Quality Audio Mode = unchecked


LPF Settings: Same as pre VA7 Model 1 consoles.

LPF Settings for M2 VA3: uncheck everything except the YM channels


Channel Volume Settings: Same as pre VA7 M1 consoles.

Channel Volume Settings for M2 VA3: 100, 100, 20, 20, 20, 17


========================================

CDX

While the CDX is based around the same base components as early Genesis model 2s, its low-pass
filter is not as strong, resulting in a slightly less muffled sound and its PSG/FM mix has quieter PSG
than other revisions. Here's how we can approximate this:

Ladder Effect Depth = 0

YM2612 High Quality Audio Mode = unchecked



LPF Settings: 5400, 26, only YML and YMR checked.


Channel Volume Settings: 100, 100, 18, 18, 18, 16

========================================

X'Eye

Like the CDX, its base hardware is the same as early Genesis Model 2s, though its low-pass filter is
harsher and more muffled, and its PSG/FM mix has PSG mixed in noticeably louder than other
revisions. So we have to approximate this as follows:

Ladder Effect Depth = 0

YM2612 High Quality Audio Mode = unchecked


LPF Settings: 3800, 24, only YML and YMR checked.


Channel Volume Settings: 100, 100, 25, 25, 25, 23

========================================


Master System Audio:

Channel Levels:

Square 1 = 45
Square 2 = 45
Square 3 = 45
Noise = 42
YM2413 L = 53
YM2413 R = 53

NO LPF

========================================

Game Gear Audio:

Adjust Panning to max out -100/+100 for all channels

Channel levels

SQR1 L = 45
SQR1 R = 45
SQR2 L = 45
SQR2 R = 45
SQR3 L = 45
SQR3 R = 45
Noise L = 42
Noise R = 42

No LPF

=========================================

Colecovision Audio:

By default, Colecovision games have some panning applied to the channels. 

Start by setting all channel panning to 0.

Channel levels:

Square 1 = 45
Square 2 = 45
Square 3 = 45
Noise = 42
SGM 1 = 45
SGM 2 = 45
SGM 3 = 45

No LPF