Volume

In addition to bumping up TTS voice file volume, you'll have to adjust Nuvi volumes as well. If you think it's still too low, there's nothing else you can do.

All sound are turned up to 100% there must be something that can be done, I as soon as I turned my A/C fan on in the car I could not hear it.

Open TTSVoiceEditor
Selct File then open
Open drive for you Garmin i.e Q:
Open folder named Garmin
Open floder named voice
Select file i.e English American Jack
In box top right corner increase volume to desired level, I set mine at 90
Save file and you should be done..

I have know idea what I did but its working now. thanks

I'll be damned. It really does work! Thanks for the directions, blue63! Well done!

Follow up - July 20: When I used turbocc's great program ro increase "Jack's" volume, I set it at 93. Last night when my wife and I were using the GPSr to find a restaurant well off the beaten path, "Jack" was coming in so loud that I actually had to turn the volume down! Terrific!

I printed out your instructions for increasing vol. and that will come in handy.

As much as I like my 765T now that software issues have been resolved, it would have been returned had I not known about Turbo's great program(s). The volume is indeed way too low especially when comparing it to the 750 we also have.

When i called garmin about the Vol they told me there was nothing that could be done about it.

Maybe you should have told them to come to the FACTORY and THEY may learn something.