[pauls898]

Hi, I have just purchased a Panasonic DMP-BDT-500 for use with my Denon A/V system. I am using the 7.1 Analogue outputs so I can play back the 7.1 Dolby Digital Master HD which isn’t supported over the Optical Out terminals and as my Denon A/V system is a few years old, it doesn’t support HDMI inputs.

My Question here is as I’m using my direct EXT in on my Denon System, this bypasses all of my speaker settings in that system for things like listening distance etc.

The Panasonic DMP-BDT-500 does however include speaker settings for the 7.1 Analogue outputs, like gain and ms delay for the Centre, Surround and Rear Back Channels, however this is set in ms (Mill seconds) and not distance (Feet)?

Is there a simple way to calculate what values I should be using here? At present there all set the same at 0 ms.

[Deacon1972]

1 foot = 1ms

Start with the speaker furthest away from you, this will be 0ms, then the next nearest and so on, the speaker closest to you should have the greatest value.

Pretty sure that's right, been a long time since I had to do the delays manually.

[chrisjr]

It's actually 1mS = 1ft 1.5in but what's one and a half inches between friends

The speaker furthest away from you will take the longest for the sound to reach you. So it should have the shortest delay and the nearest one the longest delay so that it's sound hits you the same time as the furthest.

Now you have to get all geeky and measure the distances. Find the greatest then subtract all the others from that. Set the speaker with the greatest distance to zero and the others to the difference in distance figure.

So lets say the furthest speaker is 5ft and the closest 3ft. Set the 5ft speaker to 0mS and the 3ft speaker to 2mS (5 - 3 = 2). The extra delay means the 3ft speaker sounds as though it is 5ft away so the sound from the two arrives in synch.

[pauls898]

Hi, Thanks for your replies I worked out and set the values, I don't know whether I can hear any difference than with them all set to 0 but I must admit the 7.1 surrond does sound alot better than my old Dolby 5.1 and DTS 5.1 from these BluRay Discs recorded in HD Master 7.1 :-) Well please with my purchase.