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Any fellow Yamaha 2400 owners experience these decoding quirks? Please Help!

843 Views 6 Replies 4 Participants Last post by Roger Dressler, Feb 1, 2004

Tom Monahan

Discussion Starter · Jan 18, 2004

Hi,

I have a Yamaha 2400 Receiver that I had sent in for the DPL2x upgrade. There are a few decoding quirks? that I hope fellow 2400 owners can verify on their units and explain. I just wan't to make sure there isn't a problem with my unit. Even though I have heard there is a DPL2x supplement manual Yamaha told me one doesn't exist.

1. On page #32 of the manual it explains the ex/es button on the remote. The options are auto, on, and off. With the DPL2x upgrade my unit now has these options when pressing the ex/es button- auto, DPL2xMusic

n, and off. I don't understand why option 2 is dpl2x music

n and not dpl2x movie when playing back a dolby digital 5.1 movie. Do other owners 2400's have this same second option as mine?. If yes, why dpl2x music and not dpl2x movie?. If no, what do I need to do to change it to dpl2x movie.

2. When playing back DD-EX movies that are not flagged, I need to select THX for the receiver to go into DD-EX mode. If I don't select THX and instead select option 2 using the ex/es button I don't get EX I get dpl2x music even though the dvd is EX encoded. Do others find this true of there unit?. The problem I have with this is that with non flagged ex movies I am forced to use THX processing. Some ex movies don't need THX re-equilization.

3. I can't find a way to use THX re-equilization when using dpl2x to tame overly bright soundtracks.

PLEASE HELP!

Thanks,

Tom

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Roger Dressler

· #2 · Jan 18, 2004

I think once you have gotten into the PLIIx mode via the EX/ES button, you can switch PLIIx modes (Movie, Game, Music) using the parameter keys (up, down, L, R) under the sliding door of the remote. Also try the DD/DTS button as that may also offer the mode access you want.

I don't have the unit with me, so sorry if this doesn't work out.

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Tom Monahan

Discussion Starter · #3 · Jan 18, 2004

Thanks Roger!

Using the EX/ES button and the directional parameter buttons I am now cycling through the following- auto, DPL2x music on, and EX/ES. This now allows me to use EX with non EX flagged movies without having to use THX processing. It also allows me to use EX procesing on non Ex 5.1 discs.

Unfortunately, using the EX/ES button it only gives me the DPL2x music on but not DPL2x Movies on. I tried the DD/DTS button but it only toggles between Standard and DSP.

If I select DPL2x Movies using the function knob I only can use it for Dolby surround and not 5.1 sources. As soon as a 5.1 signal is detected it automatically switches out of DPL2x Movie mode.

Anyone have any ideas what I can do to get DPL2X Movies to work with 5.1 sources?

Also, I use the 2400 in a one man HT room and am currently using 1 rear center speaker. Should I be using 2 rear centers instead of one?. If yes, my ears are 26" fom the rear wall. How far apart shoud the monopoles be?

Thanks,

Tom

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Roger Dressler

· #4 · Jan 25, 2004

If you only have 1 back speaker (a "6.1" speaker system) the decoder cannot offer 5.1+PLIIx Movie mode, as that is already provided under the name Dolby EX or DTS ES. Since there was no "6.1" Music mode within EX, that is offered thru 5.1+PLIIx Music. If you have a 7.1 speaker system, then you will be given the option for 5.1+PLIIx Movie as well as Music.

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Marc Alexander

· #5 · Jan 25, 2004

Quote:

Originally posted by Roger Dressler
If you only have 1 back speaker (a "6.1" speaker system) the decoder cannot offer 5.1+PLIIx Movie mode, as that is already provided under the name Dolby EX or DTS ES. Since there was no "6.1" Music mode within EX, that is offered thru 5.1+PLIIx Music. If you have a 7.1 speaker system, then you will be given the option for 5.1+PLIIx Movie as well as Music.

What is the difference between Movie and Music mode with a 5.1 source? I have a 6.1 setup and wanted IIx because using EX and ES on 5.1 sources not encoded for 6.1 often results in the rear stage collapsing into the rear center channel.

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EVT

· #6 · Jan 29, 2004

That was my concern as well (L and R surrounds collapsing into the center channel).

But I experienced the same thing with my RX-V2400 (DPLIIx Movie is only available with a 7.1 setup). Looks like I'll have to consider stepping up to a 7.1 setup.

Roger, from your knowledge is this atually a concern (i.e. the L and R surrounds collapsing into the back surround using EX decoding on 5.1 material).

Roger, one more question, my rear soundstage currently consists of 2 dipolar speakers (surrounds L and R) on stands 1 foot above the listening position on the sidewalls of the room (sidewalls are only 3 feet wide so the L and R surrounds are close to the back wall). My couch is backed up against the wall so I added a single back surround speaker on the floor facing up behind the couch and moved the couch up a few inches (I don't have the option of moving the couch up further to put the back surround speaker on a stand and wall mounting wouldn't go over well with the wife).

My concern is that if I go to a 7.1 setup and spread the 2 back surrounds 4 feet apart (as per Dolby) my Left Surround and Left Surround Back speakers will only be about 2 -3 feet apart. This is assumming I center the 2 surround back speakers 4 feet apart behind the couch. (The couch is not centered on the back wall as an end table is on one side of it).

What do you suggest in this scenario?

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Roger Dressler

· #7 · Feb 1, 2004

EVT wrote:
Quote:

But I experienced the same thing with my RX-V2400 (DPLIIx Movie is only available with a 7.1 setup). Looks like I'll have to consider stepping up to a 7.1 setup.

There is already a "PLIIx Movie" mode for 6.1 systems. It's simply called Dolby EX.
Quote:

Roger, from your knowledge is this atually a concern (i.e. the L and R surrounds collapsing into the back surround using EX decoding on 5.1 material).

The issue of collapse is theoretically possible, sometimes discussed as an issue, and seldom cited as a problem in most movies.
Quote:

My concern is that if I go to a 7.1 setup and spread the 2 back surrounds 4 feet apart (as per Dolby) my Left Surround and Left Surround Back speakers will only be about 2 -3 feet apart. This is assumming I center the 2 surround back speakers 4 feet apart behind the couch. (The couch is not centered on the back wall as an end table is on one side of it).

The issue insn't really the physical distance between the speakers, but the angle of incidence to your listening position. The angle is what you are trying to achieve.

Another thread on the sofa surround location may be of some use, too:
http://www.avsforum.com/avs-vb/showt...48#post3298348

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