Sony BDP-S350 volume too low on some movies

[Valkyr47]

I recently purchased the BDP-S350 and have it hooked to my Sony Bravia KDL-46S4100 via HDMI. I do not have a sound system at all, im playing audio right out of my tv's speakers

When i first got it and set it up, the volume was way to low on all movies... i would have to turn my bravia volume to almost 50 just to hear it

then i saw a forum post to go into audio options and change the dynamic range setting to "TV" instead of "Auto" because i DONT have a sound system.

This seemed to fix it at the time, however as ive been purchasing more and more blu-rays, ive noticed a new trend.

the only movies where the audio is loud enough are ones that support a 2 channel audio track, like POTC and ratatouille for example

yesterday i went to watch transformers and the only english audio track was some trueHD or something like that... and once again, ive gotta crank the bravia to 50+ just to hear it

that creates a huge problem when switching between sources as i sometimes forget to lower volume, and shouldnt have to worry about that

plus i cant imagine its good to have the tv's volume setting that high

any ideas what i can do?