


Get free, friendly, expert advice call 1-888-352-9466 or email
Recently added item(s) ×
You have no items in your shopping cart.
Forums » General Discussion » Technical Questions » Dolby Prologic IIx Music Mode & Subwoofer
|
|
#261301 - 05/25/09 02:13 PM
![]() |
|
![]() connoisseur ![]() Registered: 12/04/06 Posts: 3569 Loc: Nirvana |
Originally Posted By: alan More research is needed. I still have a contact at Dolby Labs, and at H/K, so I'll send off an email and see what comes back. I think I read about this in a thread on another forum. There will be an update. . . Thanks for taking an interest in this, I’m very curious as to what’s happening so I hope you come up with something. Originally Posted By: EFalardeau That could be an indication (if the difference is THAT big), that your sub-woofer might be configured too "hot" to match your mains only. I was thinking the same thing which is why when I ran my test I reset all crossovers to 80Hz (had my mains set to 60Hz) in both 2ch direct + subwoofer and multi-channel. I also reset all the speakers to the base calibration so nothing was running hot. To reiterate when I switch between 2ch direct + sub and DPLllx music the overall SPL at the listening position stays the same but the subwoofer‘s output goes up 8-10dB in DPLllx music, in DPLllx cinema there is an overall increase of about 2dB at the listening position. There’s a corresponding drop from the main’s woofers. Originally Posted By: kcarlile I knew there was a reason I exclusively use Neo6. I Just tested Neo6 and it’s doing the same thing only it’s upping the subwoofer by 10-12 dB vs Dolby’s 8-10 but just like Dolby the overall SPL is staying the same.
_________________________
3M80 2M22 6QS8 2M2 1EP500 Sony BDP-S590 Panny-7000 Onkyo-3007 Carada-134 Xbox Buttkicker AS-EQ1 |
Top |
#261303 - 05/25/09 02:36 PM
![]() |
|
![]() shareholder in the making ![]() Registered: 05/03/03 Posts: 18044 Loc: NoVA |
D'oh.
Now what I always do when I'm calibrating DD or DTS (non-Neo6 or PLII) is calibrate the sub 10 dB hotter than the mains. However, that could be an artifact of my calibration disc: the original non-Avia one, whatever that is. I assume my settings from the DD and DTS carry over to PLII and Neo6, respectively. I could be horribly wrong, of course. Edited by kcarlile (05/25/09 02:38 PM)
_________________________
I am the Doctor, and THIS... is my SPOON! |
Top |
#261319 - 05/25/09 10:20 PM
![]() |
|
![]() shareholder in the making Registered: 05/11/02 Posts: 10621 |
Okay, I punched up the Rachmaninoff 1st Symphony, which has a quite bass-heavy passage about 25 seconds in. I switched between the DPLII Music and Movie modes several times each at the point and measured no significant difference(12" from EP500)with my SPL meter. The Movie mode averaged about a dB higher, but that could simply be measurement error.
Edit: I took more time and ran the same several times each with straight stereo, Neo:6 and Neural Surround(don't have Logic 7 available). All measurements were essentially identical within a dB. Edited by JohnK (05/25/09 10:43 PM)
_________________________
----------------------------------- Enjoy the music, not the equipment. |
Top |