If my stereo is up and im getting directions from the navi system, I cannot hear hear speaking. Its very faint. The navi volume is loud (max) i think if its the one under settings. It's funny because the bluetooth is loud when the navi sytem confirm what i want. My 08 Accord EX-L Navi's volume was loud and didn't have this problem. My Ma's 2010 CRV is the same way. I tried fixing it but it showed the volume was max. Thanks for any assistance.

 

Are your audio system and Navi OEM/stock?

I thought that the audio system cuts off when the OEM Navi gives verbal directions.
The "setup" menu controls the navigation sound level, AFAIK.
The HFL/bluetooth sound volume is controlled by the steering wheel volume control.

 

Its still very quiet. Stock Radio. Moms 2010 CRV is quiet with navi volume on full high. My 08 accord was way louder than this. If i have radio pretty loud, even if it mutes front speakers the navi voice prompts come out of the center channel speaker.

 

I have the same issue. The stereo only mutes the front speakers when the navi voice prompts begin. If you're listening to tunes at a high level, the center speaker has trouble overpowering the rears---plus the front speakers are still putting out sound, just muted a bit.
I would say it is normal and if you need the voice prompts, turn down the music some.