Speed Rumbler - Alt MRAs do not have properly balanced sound

[Aquas77]

Currently (Set 1), the default MRA for Speed Rumbler is the only MRA that has proper sound balancing. The sound effects are really quiet on the alts.

[jotego]

The sound balance thing could just be that you had save the settings for one of the MRA files but not the others. If you modify the FX volume in the OSD and then save settings, that will be kept but only for the version in that MRA. It will not be applied to the other ones. I think that is the issue you are seeing I don't know whether it makes sense to share the settings file among different MRA files for the same arcade as sometimes, the DIP settings could be different. So I don't know if I can make a strong case to Sorgelig about supporting this in the firmware

[jotego]

Confirmed in commit 46ba76a. The sets below have loud FM and quiet PSG channels. This is quite unusual as it shows either a hardware or software change in the main version of the game

• rushcrsh
• srumbler2
• srumbler3

[jotego]

This requires a bit of messing with the files for technical reasons:

• the core does not use mem.yaml, so adding a header to the MRA is a bit messier -but no big deal-
• the core sound comes from module jtgng_sound, which provides fixed gain settings at the moment and it is shared by other CAPCOM-compatible cores
• it may be worth doing #402 first

[jotego]

Fixed in #88