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Discussion Starter · #1 ·
Hey guys, it's been a while and I hope you all are doing well. Well, I finally bought a navigation unit off e-bay out of an 09' and also go the nav antenna from GM direct and had it installed. Everything is fine except one thing. The unit I bought is the version that plays DVD's but my Acadia did not have the single DVD entertainment option, I went with the headrest units instead. I noticed when I played a movie on it, one of the character voices is missing. In other words, most of the audio from what I can tell is there (and sounds great), but one guy would be moving his mouth but no sound. Can anyone think of a cause for this? Some possibilities I thought of were A) are there more speakers in the model with the roof mounted DVD system accounting for an additional speaker channel that mine doesn't have? B) In the installation of the Nav unit, could a speaker have been unplugged? C) Could possibly something be wrong in the radio not putting out all the channels of voice sound?

For reference, when the dealer had the dash apart, I did actually see the speaker mounted in the center of the dash ahead of the pop up storage compartment. Isn't that one primarily a voice channel?

Thanks for any tips, I didnt see this issue addressed in any other threads I looked in.
 

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Re: Nav Upgrade question

This oughta be good; I am interested to see how this turns out

I have the single DVD option; no nav. I wouldn't think there are additional speakers in the system. If you can hear audio from the DVD, then the speakers are working; maybe the replacement nav unit has some problems with the audio. Is the problem isolated to DVD's or do you notice any other problems with audio?
 

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Re: Nav Upgrade question

Alpha,
The center speaker from what I've read is the subwoofer; if you have this, you have the deluxe 5.1 sound system. It does not make sense you can hear some audio but not voices. Have you tried another DVD? Where are you putting in the DVD? The slot behind the face is only for the nav disk. If you bought a unit for use w/o the Rear Seat Entertainment (RSE) it is not supposed to play DVDs (they look identical). They are played directly from the headrests.

I'll look for some reference material on identifying these. If you have the part number from GM Parts Direct it can be identified that way.
 

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Re: Nav Upgrade question

I bet that's it; good call Blue
 

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Re: Rear overhead factory DVD issue

I have another issue that I noticed today also with the dvd player. If you are playing a dvd and shut the engine off and then restart the car, the center channel audio for the voices does not come back. All of the background audio still works. Has anyone else seen this problem?
 

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Discussion Starter · #6 ·
Re: Nav Upgrade question

Blue,

The Nav unit I have actually has the DVD logo in the lower corner on the front which CD only units do not have. There are no other sound issues whatsoever, everything music-wise sounds awesome. I am using the regular CD/DVD slot not the one behind the screen. And I do need to check out some other DVDs to see if it occurs on others too, but I havent had the chance yet. So that center speaker on the dash is the sub-woofer? I thought someone said it was located down inside the center console under the armrest or shifter, but I may have misunderstood. Thanks.
 

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Re: Nav Upgrade question

Alpha,
I think you are right about the speaker- it is advertised as a 5.1 system so there should be a center speaker in the front. The subwoofer should be lower in the vehicle. Anyone have a schematic? Where is our on the ball parts/illustration guy tmundal?

Since you paid for the install, I'd let the dealer sort it out.
 

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Discussion Starter · #8 ·
Re: Nav Upgrade question

And one good thing, I got er' done for a fairly decent price. $599 for the nav, which IS from an 09', $55 for the antenna, and $120 for the install. I just played another DVD and didn't notice any voice omissions, so who knows.

Hey, how many speakers are there in these things? I read on the GMC site about a 10 speaker system but that was with the DVD entertainment system. I will have to see if I have that many in mine.
 

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Re: Nav Upgrade question

GM can get flaky on speaker counting. My Trans Am had some really high number of speakers (8 or 10?)listed in the sales info. I counted the openings when I replaced the speakers & added a CD changer. There are two in the doors, two in the rear seal area, and two in the hatch area (possibly two tweeter opening back there also- can't remember right now). I found they were counting tweeters as speakers, some were in the same opening as the regular speaker.

Also, check out this thread, it sounds similar to what you are describing:
http://www.acadiaforum.net/forum/index.php?topic=405.0
 

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Re: Nav Upgrade question

This is just a thought, but do all the DVD Entertainment systems use the BOSE system? Being you don't have the BOSE (I assume) could you have less speakers? This is just a thought at how you could be missing some voices. Good luck, and let us know.
 

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Discussion Starter · #11 ·
Re: Nav Upgrade question

biggs4040 said:
This is just a thought, but do all the DVD Entertainment systems use the BOSE system? Being you don't have the BOSE (I assume) could you have less speakers? This is just a thought at how you could be missing some voices. Good luck, and let us know.
Well that brings me to another question, If your door speakers say "Bose" does that mean that you have the 10 speaker advanced audio system? I think that I DO have the advanced Bose sound system because my front door speaker grills say "Bose" and its an SLT-1. But I was wondering if maybe it wasn't. I will count the speakers and let ya know.
 

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Re: Nav Upgrade question

If the speakers say BOSE, you've got it. Now, does the new Nav unit say BOSE? May not have enough outputs?
 

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Discussion Starter · #13 ·
Re: Nav Upgrade question

Well the Nav unit is a factory unit from out of 09 that was the version that had the DVD entertainment option (flip down from the roof) so it doesn't say Bose, but that's ok, they don't say it. It only says DVD in the corner.
 

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Discussion Starter · #14 ·
Re: Nav Upgrade question

Ok you Techies out there, here is the latest.

Apparently even though I dont have the DVD entertainment option, I do have the advanced Bose 10 speaker system. Here is the count 2 tweeters in the a-pillars, 2 speakers in the front doors, 2 -rear doors, 2 in third row, 1 in the dash center, 1 subwoofer somewhere.
I put in a newer movie with the Hi-fi Dolby coding, and................NO VOICES AT ALL..... So what do you think that is??? My guess is that the center dash speaker is for dialogue or voices in movies. So either a speaker wire was knocked loose upon dealer installing it or the Nav radio has a problem....I will keep you posted as to what happens from here....to be continued...
 

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Re: Nav Upgrade question

Alpha,

In the Enclave, with the Bose Advanced 10-speaker system, the sub is located in the dashboard console on the passenger's side. Look down by where the front passengers left foot would rest - you should see a grill cover, almost below the gear shift knob - that's it. I would guess that location is the same in all Lambda's.

Here is small picture. Look at post #16 - first picture. Click on it to enlarge it:
http://www.enclaveforum.net/index.php?topic=1101.0

Better yet, here is a link from someone installing a sub in the factory location:
http://www.enclaveforum.net/index.php?topic=2606.0

Good luck.
 

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DVD Center Channel Issue - Can't hear voices when playing a DVD

I just started having the DVD no sound out of the center channel issue and blank screen issue. This only started after the dealership replaced the orginal Nav/DVD head unit because it would not eject the DVD disc. The DVD does not play the voices on the DVD but the wireless head phones work properly and if you press the "on" button on the rear entertainment center the voices play in the front speakers only. I took my Acadia to the dealership yesterday, their tech was clueless on the issue and had no idea where to begin. After walking them through everything I read on these forums and the troubleshooting steps I did on my own, they found an internal bulletin on the center channel issue, it said the fix was run an update to the latest sw/firmware. Any bets on if this fixed it???

It did NOT so now back to square 1. At this time GMC is telling the dealership it's not a hw issue with the head unit but a possible issue between it and the rear entertainment center since the work-around is to press the on-button on the rear entertainment center but after doing that the voices only play through the front speakers only and the kids complain they can't hear it regardless. GMC has NO idea what is causing this and it's a joke for them to not have a fix by now since I see that people have had this issue for quite some time.

I'll be sure to post more as I continue to speak with the dealership.
 

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Re: DVD Center Channel Issue - Can't hear voices when playing a DVD

Similar topics merged.
 

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Ok, here is what I know. We have the factory NAV with DVD entertainment system in our Enclave AND it also has Bose and Dolby Digital/DTS 5.1 Surround Sound setup. I am not sure if the NAV/DVD units in the Acadia are supposed to have Dolby Digital 5.1 / DTS or not (does it have the Dolby Digital/DTS logo on the NAV faceplate as well as the DVD logo?) Here is how it works. Most DVDs are recorded in 5.1 surround sound and have front right, front left, center, rear right and rear left (5 channels) + .1 for the subwoofer. In most movies encoded in 5.1 surround sound, the voices primarily come from the center speaker (on the dash) unless they are off screen right/left or behind the viewer in the scene. For some reason, your center speaker is not receiving the center channel signal in a Dolby Digital or DTS 5.1 channel encoded movie. MOST DVDs (not all) have the ability to switch audio sources on the disk between 5.1 surround or two channel stereo (and some have other language audio tracks as well). You can get to these other audio sources by touching the nav screen, activating the cursor and clicking on "audio options" until it selects the audio track that will blend the voices (and all other audio) in just the right and left channels. Essentially the audio system in the car blends all 5.1 channels into left/right when the headphones are used with the RSE for obvious reasons. You can also switch between the different audio channels using the "musical note icon" button on the remote.

The real question here is this. Since you upgraded to the DVD/NAV unit and your vehicle didn't have it from the factory, is the center speaker even wired into the outputs on the NAV/DVD unit? I don't know if the factory systems with DVD have a special 5.1 channel amplifier (but I would think so). The problem here may be that you have a standard BOSE stereo amplifier and you need the BOSE 5.1 channel amplifier to feed that center channel speaker with the center channel signal (and the other 4.1 discrete surround channels). Or you can just select the alternate audio track on the DVD for 2 channel stereo output from the DVD (keep in mind some DVDs may not have this 2 channel stereo audio track). One good way to check on the amplifier question would be for your dealer to check the part number for the BOSE amplifier for a vehicle WITH factory DVD and without factory DVD. If there is a different part number for the amplifier, then that may be the answer. You need the 5.1 channel surround sound amplifier to get 5.1 surround sound from DVDs with 5.1 surround sound audio tracks.

I hope I haven't thoroughly confused everyone. Good Luck and let us know if you or the dealer can figure it out!
 

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ccaats said:
Ok, here is what I know. We have the factory NAV with DVD entertainment system in our Enclave AND it also has Bose and Dolby Digital/DTS 5.1 Surround Sound setup. I am not sure if the NAV/DVD units in the Acadia are supposed to have Dolby Digital 5.1 / DTS or not (does it have the Dolby Digital/DTS logo on the NAV faceplate as well as the DVD logo?) Here is how it works. Most DVDs are recorded in 5.1 surround sound and have front right, front left, center, rear right and rear left (5 channels) + .1 for the subwoofer. In most movies encoded in 5.1 surround sound, the voices primarily come from the center speaker (on the dash) unless they are off screen right/left or behind the viewer in the scene. For some reason, your center speaker is not receiving the center channel signal in a Dolby Digital or DTS 5.1 channel encoded movie. MOST DVDs (not all) have the ability to switch audio sources on the disk between 5.1 surround or two channel stereo (and some have other language audio tracks as well). You can get to these other audio sources by touching the nav screen, activating the cursor and clicking on "audio options" until it selects the audio track that will blend the voices (and all other audio) in just the right and left channels. Essentially the audio system in the car blends all 5.1 channels into left/right when the headphones are used with the RSE for obvious reasons. You can also switch between the different audio channels using the "musical note icon" button on the remote.

The real question here is this. Since you upgraded to the DVD/NAV unit and your vehicle didn't have it from the factory, is the center speaker even wired into the outputs on the NAV/DVD unit? I don't know if the factory systems with DVD have a special 5.1 channel amplifier (but I would think so). The problem here may be that you have a standard BOSE stereo amplifier and you need the BOSE 5.1 channel amplifier to feed that center channel speaker with the center channel signal (and the other 4.1 discrete surround channels). Or you can just select the alternate audio track on the DVD for 2 channel stereo output from the DVD (keep in mind some DVDs may not have this 2 channel stereo audio track). One good way to check on the amplifier question would be for your dealer to check the part number for the BOSE amplifier for a vehicle WITH factory DVD and without factory DVD. If there is a different part number for the amplifier, then that may be the answer. You need the 5.1 channel surround sound amplifier to get 5.1 surround sound from DVDs with 5.1 surround sound audio tracks.

I hope I haven't thoroughly confused everyone[/color]. Good Luck and let us know if you or the dealer can figure it out!
:confused:
 

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Here are your (2) BOSE audio options from the factory per the brochure.


1) Audio system feature, Bose® premium 10-speaker system with sub-woofer

2) Audio system feature, Bose® advanced 10-speaker system with 5.1 surround sound



My guess is that when you get the Bose advanced system with 5.1 surround sound you get a different 5.1 channel amplifier. And you only get the Bose advances system from the factory when you order factory DVD. My guess is you will need to replace the Bose premium system amplifier (2 channel stereo wth sub) with the Bose advanced system 5.1 channel amp and wire it into the speakers accordingly to be able to enjoy 5.1 channel surround sound from movies.
 
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