Different Bass EQ for A/V ?


Since I have added a subwoofer to my 5.1 surround sound A/V system I have noticed that when the bass balance sounds reasonable and correct for playback of DVDs and TV broadcasts that there is definitely too much bass when playing back audio-only music CDs. I either have to turn my subwoofer down or disconnect it entirely to restore a natural bass balance for CD.

Why is this so -- why does the apparent bass EQ for the video format differ from that of standard audio formats? This seems to unnecessarily complicate things.

I have also noticed that the Dolby Digital 5.1 format has more apparent bass than DTS 5.1, though the DTS seems a little cleaner and tighter.
plato

Showing 1 response by plato

Guys, thank you for your thoughts. Now, at least, I know that this appears to be a relatively common phenomenon. And Patmatt, my audio-only systems are separate from my HT system and this seems to be yet another good reason to keep it that way. :)

I'm still curious to know the specifics of the apparent differences between HT and audio-only bass equalization. If the audio curve is flat, then the HT bass curve must be down from flat below 50 Hz, which would require additional bass boost to achieve flat response. If no one knows the answer here, I may write to Dolby Labs and see if they can give me an explanation.