[srcstc]

Originally Posted by fastball

They simply don't fit and can't work on modern cars. They'll be around as long as young kids can't afford newer cars but in 10 years time, when even a cheap 15 year old car has no provision for DIN, DIN & 1/2, and double DIN head units, even home made custom jobs, they won't be able to sell them.

Young kids usually can't afford high end flagship double dins.


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[gblaue]

Originally Posted by fastball

I think he means Alpine, Pioneer, Clarion, etc..... they might not exactly go out of business since they make aftermarket amps which will probably still be in demand (Pioneer is in home electronics as well so they'll be fine), but they may end head unit production.

Who do you think makes the factory car head Units? Alpine, Pioneer, Clarion (with the help of the Japanese government, Panasonic, Harman, and Denso are eating from both ends of the Twizzler.

[drfeelgood]

Originally Posted by srcstc

Yeah that's what I meant. I think even amplifier sales have gone down substantially. It's not as easy to hook up an amp in a modern car. Before you'd buy a new head unit and just run the RCAs. Not you can't replace the head unit and most cars have an amp in the trunk and some use fiber optics. It's not as simple as it used to be.


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not as easy, but still possible. A lot of aftermarket equipment uses fiber optics now as well.

[fastball]

Originally Posted by gblaue

Who do you think makes the factory car head Units? Alpine, Pioneer, Clarion (with the help of the Japanese government, Panasonic, Harman, and Denso are eating from both ends of the Twizzler.

Right but the point is there’s no longer head units in cars.

Our Camaros have a touchscreen made by anyone who makes touchscreens and an amp and speakers made by Bose. The touchscreen could be anyone, not necessarily a car audio maker.

[gblaue]

Originally Posted by fastball

Right but the point is there’s no longer head units in cars.

Our Camaros have a touchscreen made by anyone who makes touchscreens and an amp and speakers made by Bose. The touchscreen could be anyone, not necessarily a car audio maker.

There’s still a head unit, the human interface is just remotely located now. It’s nothing new. Blaupunkt did this in the mid 70s. The real issue is the digital audio/infotainment busses that the cars use now. The several of them out there, MOST, Ethernet AVB, Ethernet... When it as analog audio, there was a common standard. Analog. As long as there is many different standards, and protocol implementations by different auto manufacturers, there is little chance that there will be aftermarket components. It’s just not profitable. Liabilities of crashing a CAN bus in a car. DTCP, HDCP, liabilities of protected content.

[cengell]

Originally Posted by drfeelgood

Yes, CD is still superior to even 320bps MP3, people don't seem to understand that. I have a FLAC player in my car, so I can listen to uncompressed digital files , but yes

I agree MP3's on a very HQ audio system are not reaching the SQ equal to the EQ. So I will encode my CD's to M4A and WOW so much better SQ. My M4A encoding setting are 320 Bit Rate and using the AAC-LC codec, and the sample rate is 48Khz.

Christopher

[fastball]

Originally Posted by gblaue

There’s still a head unit, the human interface is just remotely located now. It’s nothing new. Blaupunkt did this in the mid 70s. The real issue is the digital audio/infotainment busses that the cars use now. The several of them out there, MOST, Ethernet AVB, Ethernet... When it as analog audio, there was a common standard. Analog. As long as there is many different standards, and protocol implementations by different auto manufacturers, there is little chance that there will be aftermarket components. It’s just not profitable. Liabilities of crashing a CAN bus in a car. DTCP, HDCP, liabilities of protected content.

Well the audio processor is integrated in the Bose amp so I’m not sure you can call that a head unit. If there was a head unit per se you could tap into the audio signal before the Bose to run aftermarket amps.

The touchscreen goes to the ECM, from the ECM to the factory amp, then out to the speakers.

I don’t see where there is anything remotely similar to what you’re calling a head unit in the audio flowchart schematic

[drfeelgood]

Originally Posted by cengell

I agree MP3's on a very HQ audio system are not reaching the SQ equal to the EQ. So I will encode my CD's to M4A and WOW so much better SQ. My M4A encoding setting are 320 Bit Rate and using the AAC-LC codec, and the sample rate is 48Khz.

Christopher

yessir, THAT is the way to do it !

[drfeelgood]

Originally Posted by fastball

Well the audio processor is integrated in the Bose amp so I’m not sure you can call that a head unit. If there was a head unit per se you could tap into the audio signal before the Bose to run aftermarket amps.

The touchscreen goes to the ECM, from the ECM to the factory amp, then out to the speakers.

I don’t see where there is anything remotely similar to what you’re calling a head unit in the audio flowchart schematic

I may be wrong, but I thought there is still a ton of info contained in the touchscreen unit, prior to the ECM. The M650-GM unit utilizes this , and sends the signal to both the ECM and out via both digital and analog signals to an aftermarket sound processor or amplifier. Nav-tec was able to dissect the MOST system and created a phenomenal product, but from what I understand this is VERY expensive to replicate.

I think what gblaue is talking about is that expense. And since MOST is just one buss system in use, unless the industry standardizes this, it would be cost prohibitive for a company to reverse engineer a product for EACH type of buss system.

Things are just much more complicated nowadays.

[gblaue]

Originally Posted by fastball

Well the audio processor is integrated in the Bose amp so I’m not sure you can call that a head unit. If there was a head unit per se you could tap into the audio signal before the Bose to run aftermarket amps.

The touchscreen goes to the ECM, from the ECM to the factory amp, then out to the speakers.

I don’t see where there is anything remotely similar to what you’re calling a head unit in the audio flowchart schematic

I can tell you with 10000% certainty that the Bose amp is only sent stereo audio data, in I2S audio format, encrypted on the MOST bus. The “touchscreen” is connected to the HMI module under the passenger side dashboard. The HMI module has the digital decoder, if you will, that takes compressed audio from usb, satellite, Navi, and digital tuner and decompressed it back to I2S audio format, then puts it onto the MOST bus to the Bose amp.

[drfeelgood]

Originally Posted by gblaue

I can tell you with 10000% certainty that the Bose amp is only sent stereo audio data, in I2S audio format, encrypted on the MOST bus. The “touchscreen” is connected to the HMI module under the passenger side dashboard. The HMI module has the digital decoder, if you will, that takes compressed audio from usb, satellite, Navi, and digital tuner and decompressed it back to I2S audio format, then puts it onto the MOST bus to the Bose amp.

I learn every time you post

[gblaue]

Originally Posted by drfeelgood

I learn every time you post

[ember1205]

Originally Posted by gblaue

I can tell you with 10000% certainty that the Bose amp is only sent stereo audio data, in I2S audio format, encrypted on the MOST bus. The “touchscreen” is connected to the HMI module under the passenger side dashboard. The HMI module has the digital decoder, if you will, that takes compressed audio from usb, satellite, Navi, and digital tuner and decompressed it back to I2S audio format, then puts it onto the MOST bus to the Bose amp.

I know this is an old thread, but this seems like it's exactly what I'm interested in locating..

Can you provide any specifics with where it is / how to get to it?

My explicit interest is in understanding if there's a standard USB port on that unit that I could "split" in order to drop a connection into the glove box. There's ZERO room for my phone anywhere in this car and having the USB cable routed out of the center console is unsightly and leaves it exposed to damage. Not to mention, with a convertible, the phone overheats because the sun is beating down on it. I'm looking for a way to toss the phone into the glove box (the only place it will actually fit in the car) and have it be powered, connected to Android Auto / Apple CarPlay, -and- be out of the sun with no cables out in the open.

[gblaue]

Originally Posted by ember1205

I know this is an old thread, but this seems like it's exactly what I'm interested in locating..

Can you provide any specifics with where it is / how to get to it?

My explicit interest is in understanding if there's a standard USB port on that unit that I could "split" in order to drop a connection into the glove box. There's ZERO room for my phone anywhere in this car and having the USB cable routed out of the center console is unsightly and leaves it exposed to damage. Not to mention, with a convertible, the phone overheats because the sun is beating down on it. I'm looking for a way to toss the phone into the glove box (the only place it will actually fit in the car) and have it be powered, connected to Android Auto / Apple CarPlay, -and- be out of the sun with no cables out in the open.

Splitting a USB cable is just going to cause you headaches. What I would do, is either unmount the USB connector in the center console, unbundle the wire in the harness, and reroute it to your glovebox. I'd bet that it may reach. Or, get a USB extension cord, plug it in you console, and route it to the glove box.