[cellsafemode]

Originally Posted by ctrlz

I did some thorough searching on MOST today and had much more success than previously! I'm not sure how much it will really help, because GM's implementation of MOST is still unique to GM.

For reference, our Camaros use MOST50 over copper for communication between the audio components.

First my big find. You can download (for free) an entire book (in English) on MOST from this location:
http://www.mostcooperation.com/publications/most-book/
There is some interesting stuff on audio around page 300.

Second, to get the most specific information on this topic, it is worth searching Camaro6 for posts by gblaue. He keeps a low profile, but one can quickly infer he has a firsthand working knowledge of Bose amplifiers, but not the exact amp in our car.

I get the impression we are unlikely to see a MOST-to-lineout audio decoder unless Chevy itself decides to produce one.

I'd sooner rip the guts out of the bose amp, find the trace that leads to the actual amplifier circuit (the analog pre-amp audio) and place two rca connectors drilled and set into the side of the bose amp somewhere. Along with other modifications to the amp.

Otherwise you'll be waiting a while.

It's a shame that you pay more for less options but it's not like they gave us much of a choice. Not like the Bose option was offered by itself, it either came with the trim or came with the 8" screen and who wants the 7? nobody.

edit: was just thinking, they probably do a good bit of digital shenanigans before decoding to analog so that idea still might not be perfect. But it would at least be an improvement over using the amped speaker outputs.

[ctrlz]

Originally Posted by cellsafemode

I'd sooner rip the guts out of the bose amp, find the trace that leads to the actual amplifier circuit (the analog pre-amp audio) and place two rca connectors drilled and set into the side of the bose amp somewhere.

edit: was just thinking, they probably do a good bit of digital shenanigans before decoding to analog so that idea still might not be perfect. But it would at least be an improvement over using the amped speaker outputs.

I suspect that there is not an unadulterated analog audio signal to be found. The music sources are all digital, the head unit sends it digitally over MOST50, and the amp processes the digital input. There is no analog until the various outputs for different speakers have been digitally EQ'd.

The one thing I don't get is, "Why the 6x9's on the parcel shelf?" Seems like they could have saved a few bucks by using smaller speakers.

One other thing I got out of re-reading some of the old posts is that there is a very good chance the center channel speaker contains signal not present in the left and right front speaker feeds.

[MANNAXMAN]

Originally Posted by MPScan

2. Sub is mounted to car with some sort of holding concrete clay. I can still smell it a little in the interior. It's definitely solid with no rattles at all. Scroll back in this thread -- I think I posted a pic before the carpet was put on and you can see the clay on the left and right sides of the sub.

Is this one of the pics to which you are referring?

I did see this pic before posting my question. Is the "holding concrete clay" attached directly to the carpet? How do you remove the enclosure if you had to replace the sub?

[JoeAyalaM]

Originally Posted by ctrlz

One other thing I got out of re-reading some of the old posts is that there is a very good chance the center channel speaker contains signal not present in the left and right front speaker feeds.

That is not the case, the Camaro´s Bose Audio System is 2 channel based, the Center Channel is only a fill speaker with content from L&R. Only Dolby 5.1 based systems (like those for movies on Home Theatres and high end SUV´s for the rear seats screens) have center only signals.

[JoeAyalaM]

Originally Posted by CaliMBF

I guess that's why I haven't pulled the trigger on my upgrade yet, b/c even the high end custom shops in my area still don't have enough knowledge on working on our cars yet.

You are right on point there, must shops do not really know how to set the system up before you hire them. Here in the forum is all the information you need, but be assured that you have to use the post amp signals if you want to keep all the functionality. When I want to do an audio upgrade, I gather all the information from the forums and then tell the shop how I want it done.

The idea to use pre amp signals is not feasible now, that MOST signal is GM´s propietary code and it would thake countless hours from an expert software programmer to decode it, it would cost $$$$$ it is just not worth to do it when you can use a Mosconi DSP or JL Audio Fix.86.

[ctrlz]

Originally Posted by JoeAyalaM

That is not the case, the Camaro´s Bose Audio System is 2 channel based, the Center Channel is only a fill speaker with content from L&R. Only Dolby 5.1 based systems (like those for movies on Home Theatres and high end SUV´s for the rear seats screens) have center only signals.

Do you know what company employs the author of this post? And what he designs for them? It is not hard to figure out. Not saying you are wrong, because I truly do not know. But car audio is evolving in ways that often make it harder to install aftermarket products.
http://www.camaro6.com/forums/showpo...98&postcount=5

[cellsafemode]

Originally Posted by ctrlz

Do you know what company employs the author of this post? And what he designs for them? It is not hard to figure out. Not saying you are wrong, because I truly do not know. But car audio is evolving in ways that often make it harder to install aftermarket products.
http://www.camaro6.com/forums/showpo...98&postcount=5

It's all about forcing customers into buying more expensive trims that always come bundled with other options that buyers probably dont really want but aren't willing to special order their car.

Can't have people buying cheap trims, then buying only what they want through the aftermarket. how are poor OEM's supposed to feed their families?

[jfcody3962]

OP (MPSCAN) - did get your mic issue squared away? I am waiting to hear what the solution was before I start working on my subwoofer project. Thanks.

[MPScan]

Originally Posted by jfcody3962

OP (MPSCAN) - did get your mic issue squared away? I am waiting to hear what the solution was before I start working on my subwoofer project. Thanks.

Not yet. Shop owner went away for two weeks and I had some work travel. We are meeting on the 26th to fix it permanently. The ANC is gone and the system sounds awesome, but I have zero voice control for the rest of the car.

They said they did NOT disconnect the A pillar mic, so something is obviously wrong. I have no doubt they'll fix it, just need to find the problem. They did hardware a mirror radar detector for me too, so I am wondering when they ran the line down the A pillar if they knocked out the voice mic there by accident.

I'll keep the thread updated.

[JoeAyalaM]

Originally Posted by MPScan

The ANC is gone and the system sounds awesome, but I have zero voice control for the rest of the car.

They said they did NOT disconnect the A pillar mic, so something is obviously wrong. I have no doubt they'll fix it, just need to find the problem. They did hardware a mirror radar detector for me too, so I am wondering when they ran the line down the A pillar if they knocked out the voice mic there by accident.

I'll keep the thread updated.

Do turn signal clicking and reverse sensors work? If not and the ANC is gone, it is most likely that the Bose X3 Connector is loose. You need to disable the mics to turn the ANC off, either clip the wires or disconnect the mics inside the door panels. But the rest of the X3 wires must be connected in order to keep fulll functionality.

[MPScan]

Both the turn signals work (they're a bit loud through the stereo, but I like that actually) and the reverse cross traffic alert works. So I kept both in-tact with this method. They only disconnected the mics in the doors.

[JoeAyalaM]

Originally Posted by ctrlz

Do you know what company employs the author of this post? And what he designs for them? It is not hard to figure out. Not saying you are wrong, because I truly do not know. But car audio is evolving in ways that often make it harder to install aftermarket products.
http://www.camaro6.com/forums/showpo...98&postcount=5

I do not KNOW where he works or does, do you realy KNOW?

What I do know is that I tested my Camaro 2SS Bose system and Center is actually made up from L&R. Whenever Center is present, it also is there on L&R, if either L or R is present, Center also has some signal. Therefore Center is a fill in speaker only. Also the output on this Center speaker is not strong enough to handle any content on it´s own that had been removed from L&R.

But in the event you really have to have center, a Mosconi DSP or JL Audio Fix-86, can handle that.

[JoeAyalaM]

Originally Posted by MPScan

Both the turn signals work (they're a bit loud through the stereo, but I like that actually) and the reverse cross traffic alert works. So I kept both in-tact with this method. They only disconnected the mics in the doors.

Then I guess it has something to do with the Radar Detector they installed, because that is the way mine is, with only the door mics disconected, and everything works fine.

[CaliMBF]

I have a couple questions about the sub enclosure. 1) Where is the sub firing? I've looked at the pics both before and after the enclosure was carpeted and can't figure it out. 2) I saw someone else in the thread asked the question on if the sub enclosure could be removed if necessary. I never saw that question answered. Only about the clay type substance on the enclosure. Thanks!