Philip Hamm
Senior HTF Member
- Joined
- Jan 23, 1999
- Messages
- 6,874
Untill tonight I had assumed that my receiver did analog bass management on the 5.1 channel ins. After all, it's got settings for High Pass Filter and Low Pass Filter and the THX logo on them. I think I know what a HPF and LPF are, and turning them on should direct the bass to my sub, right? After all, I've been hearing big bass for years out of my system with the 5.1 ins, even with the Tarzan 5.0 DVD!
Well, my new Technics DVD-A player has shown me the light. The old receiver works just like the newer ones, passing the 5.1 signal straight through unchanged to my speakers.
My first hint was some strange bass problems on a select few DTS tracks. First the Steely Dan "Two Against Nature" DVD. Then the Paul McCartney "Live at the Cavern Club" DVD. Then most recently the Steely Dan DVD-A, in DTS mode. On all of these if I used DD I got big bass, but in DTS it sounded weak. The answer, my friends, is simple.
All this time I have been operating under the assumption that my receiver was doing bass management, when in fact, my ED-901 DD decoder has been doing it all along. This confirmed by setting the speakers to large in the Technics and playing back the Tarzan DVD and A/Bing the two decoders. ED-901 - BOOM BOOM Technics - boom boom. What about that!
All the DTS movies I've watched on LD and all the DTS CDs I've enjoyed have been mastered with the bass rolled into the LFE tracks. Why? Because most people who think their speakers can handle "large" are wrong, and DTS wants to make damn sure that their stuff sounds good on those systems. That's all I can think of. The DTS tracks that I listed above were mastered with the LFE on the mains unmodified. (side note - I now understand why the esteemed Robert George started his bass management thread following the original Jurassic Park DTS release.)
So the good news is that my new DVD player will fix a problem that I've had with DTS discs, and would have with more and more discs as they're mastered more accurately.
The very slight bad news is that with DTS tracks I'll be listening to my crossover points at 100kHz. DD will still be 80 thanks to the ED-901. I will A/B them to see if this small change makes any difference.
But the bad news is that my system can't do proper bass management for DVD-Audio! Something I thought would not be a problem!!! Time to take it up with Panasonic I guess. I'm sure they won't fix it but it's worth asking about anyway.
Now the real question is what the hell do the L.P.F. and H.P.F. switches do on my damn receiver for the 5.1 ins!??!? The book says the following:
quote: High Pass Filter (H.P.F.) / Low Pass Filter (L.P.F.)
This function provides an active crossover between the front speakers and the subwoofer speaker. The high pass filter removes the low bass from sounds sent to the front speakers. The low pass filter removes any mid-range and high frequency sounds from the signals sent to the subwoofer output.[/quote]Not really sure what the function of these filters is. I'd love an explanation. I don't understand!!!
I, Philip Hamm, am a bass management idiot.
------------------
Philip Hamm
AIM: PhilBiker
[Edited last by Philip Hamm on July 31, 2001 at 11:00 PM]
Well, my new Technics DVD-A player has shown me the light. The old receiver works just like the newer ones, passing the 5.1 signal straight through unchanged to my speakers.
My first hint was some strange bass problems on a select few DTS tracks. First the Steely Dan "Two Against Nature" DVD. Then the Paul McCartney "Live at the Cavern Club" DVD. Then most recently the Steely Dan DVD-A, in DTS mode. On all of these if I used DD I got big bass, but in DTS it sounded weak. The answer, my friends, is simple.
All this time I have been operating under the assumption that my receiver was doing bass management, when in fact, my ED-901 DD decoder has been doing it all along. This confirmed by setting the speakers to large in the Technics and playing back the Tarzan DVD and A/Bing the two decoders. ED-901 - BOOM BOOM Technics - boom boom. What about that!
All the DTS movies I've watched on LD and all the DTS CDs I've enjoyed have been mastered with the bass rolled into the LFE tracks. Why? Because most people who think their speakers can handle "large" are wrong, and DTS wants to make damn sure that their stuff sounds good on those systems. That's all I can think of. The DTS tracks that I listed above were mastered with the LFE on the mains unmodified. (side note - I now understand why the esteemed Robert George started his bass management thread following the original Jurassic Park DTS release.)
So the good news is that my new DVD player will fix a problem that I've had with DTS discs, and would have with more and more discs as they're mastered more accurately.
The very slight bad news is that with DTS tracks I'll be listening to my crossover points at 100kHz. DD will still be 80 thanks to the ED-901. I will A/B them to see if this small change makes any difference.
But the bad news is that my system can't do proper bass management for DVD-Audio! Something I thought would not be a problem!!! Time to take it up with Panasonic I guess. I'm sure they won't fix it but it's worth asking about anyway.
Now the real question is what the hell do the L.P.F. and H.P.F. switches do on my damn receiver for the 5.1 ins!??!? The book says the following:
quote: High Pass Filter (H.P.F.) / Low Pass Filter (L.P.F.)
This function provides an active crossover between the front speakers and the subwoofer speaker. The high pass filter removes the low bass from sounds sent to the front speakers. The low pass filter removes any mid-range and high frequency sounds from the signals sent to the subwoofer output.[/quote]Not really sure what the function of these filters is. I'd love an explanation. I don't understand!!!
I, Philip Hamm, am a bass management idiot.
------------------
Philip Hamm
AIM: PhilBiker
[Edited last by Philip Hamm on July 31, 2001 at 11:00 PM]