Please help - Santa needs help with volume limit

[Gay Singletary]

Hi,
My 14 year old son is blind and hearing impaired in one ear and wears a hearing aid.  He also has some developmental delays and behavior difficulties, so I can't always trust him to keep the volume at a safe limit.  He uses a talking music player on  his computer with no difficulty.  (If you are familiar with hearing aids, we don't have the option of a T-coil right now so a neck loop or ear loop wouldn't work - so he has to use his good ear for the mp3 player.)
 I just purchased a Sansa Clip for him with Rockbox.  I love that I can set it up with the same folders and files he has on his computer.
I have read what I could fine in forums and the manual and have used the precut setting within the equalizer to -24.  This works great for playing back music files - I can turn the volume up as loud as it can go and feel sure he will not damage his hearing.  However, the precut volume does not seem to apply to the radio or the voice on the player.
Obviously with only one good ear and no vision, we have to be extremely careful about his hearing.  Can anyone help me find a way to decrease the volume on the radio and/or the voice??
THANKS!!!!! 

[gbl08ma]

Rockbox has no volume limit I know off. The best you can get is the EQ precut, and as you said, it doesn't apply to Radio or anything else that doesn't go through the equalizer (like any games/plugins that may have sound, but you can delete those plugins).

You would need to modify the Rockbox source code and compile it yourself in order to place a volume limit.

In general, and from my point of view, the Rockbox community has shown to not be in favor of a volume limiter that doesn't let the global volume go higher than a certain value, however, I don't think anyone has thought about special situations like this one.

[saratoga]

Which Clip do you have (v1, v2, + or zip)?  I can try and make a custom build for you.

Edit:  here are builds for the Clip+ and ClipV2:

http://duke.edu/~mgg6/rockbox/volume_cap/

USB might be a little unstable in rockbox, so if you can't get it to work, just switch off the player and plug in USB.  That will give you the sandisk usb mode which works fine.  Let me know if you needed another one of the Clip players.

[Gay Singletary]

I might be in over my head here -
I have the Sansa +.
I don't even know what a "build" is but I'd welcome any help.
Many Thanks!

[Chronon]

If you have a Clip+, just extract rockbox_clip+_volumecap.zip to the root directory of your player.  This will overwrite the existing firmware with the version that saratoga built for you.

[Gay Singletary]

Making progress!  The music under files-my music is now softer which is great!!!!

The radio and voice (using voice box) don't seem to be affected.

I copied the file to the .rockbox file.  The build for the volume cap showed up at the bottom of the list in .rockbox as compressed.  I extracted it and then the music was softer.

Please let me know if I  did something wrong in trying to install the patch.  Is there a way to limit the volume on the radio and voice as well?

THANKS!!!!!
Gay 

[saratoga]

That build just caps the volume at -18db. If you have different volume in the radio its probably because you're still using the eq precut.